control and protection of vsc based multi terminal dc networks



Ghafouri-Shiraz Hooshang Optical CDMA Networks. Principles, Analysis and Applications Ghafouri-Shiraz Hooshang Optical CDMA Networks. Principles, Analysis and Applications Новинка

Ghafouri-Shiraz Hooshang Optical CDMA Networks. Principles, Analysis and Applications

This book focuses heavily on the principles, analysis and applications of code-division multiple-access (CDMA) techniques in optical communication systems and networks. In this book, the authors intimately discuss modern optical networks and their applications in current and emerging communication technologies, evaluating the quality, speed and number of supported services. In particular, principles and fundamentals of optical CDMA techniques from beginner to advanced levels are heavily covered. Furthermore, the authors concentrate on methods and techniques of various encoding and decoding schemes and their structures, as well as analysis of optical CDMA systems with various transceiver models including advanced multi-level incoherent and coherent modulations with the architecture of access/aggregation networks in mind. Moreover, authors examine intriguing topics of optical CDMA networking, compatibility with IP networks, and implementation of optical multi-rate multi-service CDMA networks. Key features: Expanded coverage of optical CDMA networks, starts from principles and fundamentals Comprehensive mathematical modelling and analysis from signal to system levels Addresses the applications of modern optical networking in the current and emerging communication technologies Greater focus on advanced optical multi-level incoherent and coherent modulations, spreading codes, and transceiver designs Detailed hardware specifications, system-level block diagrams, and network nodes’ functionalities This book appeals to researchers, practicing engineers, and advanced students. It is a practical resource for readers with an interest in optical communications and networks.
Saleh Joseph Homer Spacecraft Reliability and Multi-State Failures. A Statistical Approach Saleh Joseph Homer Spacecraft Reliability and Multi-State Failures. A Statistical Approach Новинка

Saleh Joseph Homer Spacecraft Reliability and Multi-State Failures. A Statistical Approach

The aerospace community has long recognized and repeatedly emphasizes the importance of reliability for space systems. Despite this, little has been published in book form on the topic. Spacecraft Reliability and Multi-state Failures addresses this gap in the literature, offering a unique focus on spacecraft reliability based on extensive statistical analysis of system and subsystem anomalies and failures. The authors provide new results pertaining to spacecraft reliability based on extensive statistical analysis of on-orbit anomaly and failure data that will be particularly useful to spacecraft manufacturers and designers, for example in guiding satellite (and subsystem) test and screening programs and providing an empirical basis for subsystem redundancy and reliability growth plans. The authors develop nonparametric results and parametric models of spacecraft and spacecraft subsystem reliability and multi-state failures, quantify the relative contribution of each subsystem to the failure of the satellites thus identifying the subsystems that drive spacecraft unreliability, and propose advanced stochastic modeling and analysis tools for the reliability and survivability of spacecraft and space-based networks. Spacecraft Reliability and Multi-state Failures provides new nonparametric results pertaining to spacecraft reliability based on extensive statistical analysis of on-orbit anomaly and failure data; develops parametric models of spacecraft and spacecraft subsystem reliability and multi-state failures quantifies the relative contribution of each subsystem to the failure of the satellites proposes advanced stochastic modeling and analysis tools for the reliability and survivability of spacecraft and space-based networks. provides a dedicated treatment of the reliability and subsystem anomalies of communication spacecraft in geostationary orbit.
Iravani Reza Voltage-Sourced Converters in Power Systems. Modeling, Control, and Applications Iravani Reza Voltage-Sourced Converters in Power Systems. Modeling, Control, and Applications Новинка

Iravani Reza Voltage-Sourced Converters in Power Systems. Modeling, Control, and Applications

Presents Fundamentals of Modeling, Analysis, and Control of Electric Power Converters for Power System Applications Electronic (static) power conversion has gained widespread acceptance in power systems applications; electronic power converters are increasingly employed for power conversion and conditioning, compensation, and active filtering. This book presents the fundamentals for analysis and control of a specific class of high-power electronic converters—the three-phase voltage-sourced converter (VSC). Voltage-Sourced Converters in Power Systems provides a necessary and unprecedented link between the principles of operation and the applications of voltage-sourced converters. The book: Describes various functions that the VSC can perform in electric power systems Covers a wide range of applications of the VSC in electric power systems—including wind power conversion systems Adopts a systematic approach to the modeling and control design problems Illustrates the control design procedures and expected performance based on a comprehensive set of examples and digital computer time-domain simulation studies This comprehensive text presents effective techniques for mathematical modeling and control design, and helps readers understand the procedures and analysis steps. Detailed simulation case studies are included to highlight the salient points and verify the designs. Voltage-Sourced Converters in Power Systems is an ideal reference for senior undergraduate and graduate students in power engineering programs, practicing engineers who deal with grid integration and operation of distributed energy resource units, design engineers, and researchers in the area of electric power generation, transmission, distribution, and utilization.
Dehmer Matthias Statistical and Machine Learning Approaches for Network Analysis Dehmer Matthias Statistical and Machine Learning Approaches for Network Analysis Новинка

Dehmer Matthias Statistical and Machine Learning Approaches for Network Analysis

Explore the multidisciplinary nature of complex networks through machine learning techniques Statistical and Machine Learning Approaches for Network Analysis provides an accessible framework for structurally analyzing graphs by bringing together known and novel approaches on graph classes and graph measures for classification. By providing different approaches based on experimental data, the book uniquely sets itself apart from the current literature by exploring the application of machine learning techniques to various types of complex networks. Comprised of chapters written by internationally renowned researchers in the field of interdisciplinary network theory, the book presents current and classical methods to analyze networks statistically. Methods from machine learning, data mining, and information theory are strongly emphasized throughout. Real data sets are used to showcase the discussed methods and topics, which include: A survey of computational approaches to reconstruct and partition biological networks An introduction to complex networks—measures, statistical properties, and models Modeling for evolving biological networks The structure of an evolving random bipartite graph Density-based enumeration in structured data Hyponym extraction employing a weighted graph kernel Statistical and Machine Learning Approaches for Network Analysis is an excellent supplemental text for graduate-level, cross-disciplinary courses in applied discrete mathematics, bioinformatics, pattern recognition, and computer science. The book is also a valuable reference for researchers and practitioners in the fields of applied discrete mathematics, machine learning, data mining, and biostatistics.
Alexandros Stavdas Core and Metro Networks Alexandros Stavdas Core and Metro Networks Новинка

Alexandros Stavdas Core and Metro Networks

10272.17 руб. Найти похожее
Find out everything you need to know about how current networks will have to evolve to provide for future broadband services In this book, the authors provide an overview of the status, challenges, architectures, and technological solutions for core and metropolitan networks. Furthermore, the book describes the current state of core and metropolitan telecommunication networks, as well as the drivers and motives behind the current paradigm shift in the telecommunications industry. Moreover, the authors elaborate system design guidelines for both point-to-point and multi-hop optical networks taking into consideration the analogue nature of the transmission channel. Key Features: Provides coverage of all aspects of core and metro networks supporting future broadband services, and a detailed description of the state-of-the-art Presents a clear path for migrating from point-to-point to data-centric, dynamic, multi-hop optical networks Shows how current systems will need to evolve over the coming years, summarizing challenges and issues to be investigated in future research Covers a wide range of topics from network architectures, to control plane, to key optical and optoelectronic devices, and best practice in transmission and system design Provides results, best practices and guidelines for various technical problems, including numerous hands-on examples Written by authors from cutting-edge companies such as Alcatel-Lucent, Siemens, Lucent, France Telecom, BT, and Telefonica Optical Core and Metro Networks will be of interest to researchers in industry and academia, and advanced (final year undergraduate) and postgraduate students undertaking communications, networking and optics courses.
Yu-Ping Tian Frequency-Domain Analysis and Design of Distributed Control Systems Yu-Ping Tian Frequency-Domain Analysis and Design of Distributed Control Systems Новинка

Yu-Ping Tian Frequency-Domain Analysis and Design of Distributed Control Systems

This book presents a unified frequency-domain method for the analysis of distributed control systems. The following important topics are discussed by using the proposed frequency-domain method: (1) Scalable stability criteria of networks of distributed control systems; (2) Effect of heterogeneous delays on the stability of a network of distributed control system; (3) Stability of Internet congestion control algorithms; and (4) Consensus in multi-agent systems. This book is ideal for graduate students in control, networking and robotics, as well as researchers in the fields of control theory and networking who are interested in learning and applying distributed control algorithms or frequency-domain analysis methods.
Lorenzo Beatriz Advanced Wireless Networks. Cognitive, Cooperative & Opportunistic 4G Technology Lorenzo Beatriz Advanced Wireless Networks. Cognitive, Cooperative & Opportunistic 4G Technology Новинка

Lorenzo Beatriz Advanced Wireless Networks. Cognitive, Cooperative & Opportunistic 4G Technology

With 40% new material the new edition of Advanced Wireless Networks provides a comprehensive representation of the key issues in 4G wireless networks. Focussing on cognitive, cooperative and opportunistic paradigms to provide further increase in network efficiency, the book explores and addresses issues in wireless internet, mobile cellular and WLAN, as well as sensor, ad hoc, bio-inspired, active and cognitive networks. It examines the problem of cross-layer optimisation and network information theory as well as adaptability and reconfigurability in wireless networks. This book is an integral description of future wireless networks and the interconnection between their elements. The information is presented in a logical order within each chapter making it ideal for all levels of reader including researchers involved in modelling and analysis of future networks as well as engineers working in the area. Each chapter starts with introductory material and gradually includes more sophisticated models and mathematical tools concluding with a comprehensive list of references. Fully updated throughout with five new chapters on Opportunistic Communications; Relaying and Mesh Networks; Topology Control; Network Optimization; and Cognitive Radio Resource Management Unifies the latest research on cognitive, cooperative and opportunistic paradigms in wireless communications Provides efficient analytical tools for network analysis Discusses security issues, an essential element of working with wireless networks Supports advanced university and training courses in the field Companion website containing extra appendix on Queuing theory
Plevyak Thomas Next Generation Telecommunications Networks, Services, and Management Plevyak Thomas Next Generation Telecommunications Networks, Services, and Management Новинка

Plevyak Thomas Next Generation Telecommunications Networks, Services, and Management

An unprecedented look into the present and future of next generation networks, services, and management in the telecommunications industry The telecommunications industry has advanced in rapid, significant, and unpredictable ways into the twenty-first century. Next Generation Telecommunications Networks, Services, and Management guides the global industry and academia even further by providing an in-depth look at current and developing trends, as well as examining the complex issues of developing, introducing, and managing cutting-edge telecommunications technologies. This is an orchestrated set of original chapters written expressly for this book by topic experts from around the globe. It addresses next generation technologies and architectures, with the focus on networks, services, and management. Key topics include: Opportunities and challenges of next generation telecommunications networks, services, and management Tri/Quad Play and IP-based networks and services Fault, Configuration, Accounting, Performance, and Security (FCAPS) requirements Convergence and an important convergence vehicle, IP Multimedia Subsystem (IMS) Next generation operations and network management architecture Ad hoc wireless and sensor networks and their management Next generation operations and network management standards from a strategic perspective A defining look at the future in this field This book will serve as a contemporary reference for the growing global community of telecommunication and information professionals in industry, government, and academia. It will be important to faculty and graduate students of telecommunications as a graduate textbook.
L298N Stepper Motor Driver Controller Board for Arduino (Works with Official Arduino Boards) L298N Stepper Motor Driver Controller Board for Arduino (Works with Official Arduino Boards) Новинка

L298N Stepper Motor Driver Controller Board for Arduino (Works with Official Arduino Boards)

Uses ST' L298N chip can directly drive two 3-30V DC motor and provide a 5V output interface power for 5V single-chip circuitry support 3.3VMCU control - Can easily control the DC motor speed and direction also control the 2-phase stepper motor - Driver: L298N Dual H Bridge DC Motor Driver IC - Driven part of the terminal supply voltage: VMS 5~35V - Driven part of the peak current Io: 2A per bridge - The logical part of the terminal supply voltage: 4.5~7V - The logical part of the operating current range: 0 ~ 36mA - Control signal input voltage range: 4.5~5.5V (high) / 0V (low) - Maximum power consumption: 20W
Produino 1-CH 5V 30A Relay Module w/ Optocoupler Isolation - Deep Blue Produino 1-CH 5V 30A Relay Module w/ Optocoupler Isolation - Deep Blue Новинка

Produino 1-CH 5V 30A Relay Module w/ Optocoupler Isolation - Deep Blue

1-CH 30A high current relay supports high / low level trigger; - Completely isolated with optocouplers relay control terminal voltage can be powered independently; - High quality 30A relay normally open interfaces Maximum load: AC 250V / 30A DC 30V / 30A; - Using SMD optocoupler isolation strong driving ability stable performance; trigger current 5mA; - Working voltage: 5V; - Module can be set high or low triggered by jumper - Relay control terminal voltage and trigger terminal voltage jumpers can be powered completely isolated before and after class to do after two different voltage requirements (such as a relay with 24V trigger with 5V) - Fault-tolerant design even if the control line is broken the relay will not operate - Power indicator (green) relay status indicator (red) - User-friendly interface design all interfaces can be connected directly via terminal wiring leads very convenient - Module size: 50mm x 33mm x 24mm - Static current: 5mA - Maximum current: 190mA - Trigger current: 2~4mA Module interface - DC+: DC power supply module is positive (positive terminal voltage trigger) - DC-: DC power supply module is negative (negative terminal voltage trigger) - IN: Signal trigger terminal (same as the default trigger voltage power supply) - JD+: Relay control terminal voltage positive - JD-: Relay control terminal voltage negative - JD+ & DC+ shorted with a jumper cap DC- and JD- shorted with a jumper cap the same trigger terminal and relay control terminal voltage - When the jumper is connected with the L side IN terminal is low trigger when connected H is a high end trigger - Normally closed (NC): Relay normally closed terminal - COM: Relay public terminal - Normally open (NO); Relay normally open terminal
Labiod Houda Vehicular Networks. Models and Algorithms Labiod Houda Vehicular Networks. Models and Algorithms Новинка

Labiod Houda Vehicular Networks. Models and Algorithms

10956.99 руб. Найти похожее
Over the last few years vehicular networks have been receiving a lot of attention from academia, industry, standardization bodies, and the various transportation agencies and departments of many governments around the world. It is envisaged in the next decade that the Intelligent Transportation System (ITS) will become an essential part of our daily life. This book describes models and/or algorithms designed to investigate evolutionary solutions to overcome important issues such as congestion control, routing, clustering, interconnection with long-term evolution (LTE) and LTE advanced cellular networks, traffic signal control and analysis of performances through simulation tools and the generation of vehicular mobility traces for network simulations. It provides an up-to-date progress report on the most significant contributions carried out by the specialized research community in the various fields concerned, in terms of models and algorithms. The proposals and new directions explored by the authors are highly original, and a rather descriptive method has been chosen, which aims at drawing up complete states of the art as well as providing an overall presentation of the personal contributions brought by the authors and clearly illustrating the advantages and limitations as well as issues for future work. Contents 1. Introduction 2. Congestion Control for Safety Vehicular Ad-Hoc Networks 3. Inter-Vehicle Communication for the Next Generation of Intelligent Transport System: Trends in Geographic Ad Hoc Routing Techniques 4. CONVOY: A New Cluster-Based Routing Protocol for Vehicular Networks 5. Complementarity between Vehicular Networks and LTE Networks 6. Gateway Selection Algorithms in a Hybrid VANET-LTE Advanced Network 7. Synthetic Mobility Traces for Vehicular Networking 8. Traffic Signal Control Systems and Car-to-Car Communications About the Authors André-Luc Beylot is Professor in the Telecommunication and Network Department of the ENSEEIHT of IRIT-T, University of Toulouse in France. Houda Labiod is Associate Professor at Telecom ParisTech in the INFRES (Computer Science and Network) Department, France.
Hamied Khalid Self-Organizing Networks (SON). Self-Planning, Self-Optimization and Self-Healing for GSM, UMTS and LTE Hamied Khalid Self-Organizing Networks (SON). Self-Planning, Self-Optimization and Self-Healing for GSM, UMTS and LTE Новинка

Hamied Khalid Self-Organizing Networks (SON). Self-Planning, Self-Optimization and Self-Healing for GSM, UMTS and LTE

With the current explosion in network traffic, and mounting pressure on operators’ business case, Self-Organizing Networks (SON) play a crucial role. They are conceived to minimize human intervention in engineering processes and at the same time improve system performance to maximize Return-on-Investment (ROI) and secure customer loyalty. Written by leading experts in the planning and optimization of Multi-Technology and Multi-Vendor wireless networks, this book describes the architecture of Multi-Technology SON for GSM, UMTS and LTE, along with the enabling technologies for SON planning, optimization and healing. This is presented mainly from a technology point of view, but also covers some critical business aspects, such as the ROI of the proposed SON functionalities and Use Cases. Key features: Follows a truly Multi-Technology approach: covering not only LTE, but also GSM and UMTS, including architectural considerations of deploying SON in today’s GSM and UMTS networks Features detailed discussions about the relevant trade-offs in each Use Case Includes field results of today’s GSM and UMTS SON implementations in live networks Addresses the calculation of ROI for Multi-Technology SON, contributing to a more complete and strategic view of the SON paradigm This book will appeal to network planners, optimization engineers, technical/strategy managers with operators and R&D/system engineers at infrastructure and software vendors. It will also be a useful resource for postgraduate students and researchers in automated wireless network planning and optimization.
Daniel Minoli Linear and Non-Linear Video and TV Applications. Using IPv6 and IPv6 Multicast Daniel Minoli Linear and Non-Linear Video and TV Applications. Using IPv6 and IPv6 Multicast Новинка

Daniel Minoli Linear and Non-Linear Video and TV Applications. Using IPv6 and IPv6 Multicast

Provides options for implementing IPv6 and IPv6 multicast in service provider networks New technologies, viewing paradigms, and content distribution approaches are taking the TV/video services industry by storm. Linear and Nonlinear Video and TV Applications: Using IPv6 and IPv6 Multicast identifies five emerging trends in next-generation delivery of entertainment-quality video. These trends are observable and can be capitalized upon by progressive service providers, telcos, cable operators, and ISPs. This comprehensive guide explores these evolving directions in the TV/video services industry, including worldwide deployment of IPv6, IPTV services, web-produced video content, and the plethora of different screens available, from TV to iPad. It offers practical suggestions as to how these technologies can be implemented in service provider networks to support cost-effective delivery of entertainment, and how new revenue-generating services can be brought to market. Important topics include: Evolving video consumption habits and possible network implications An overview of IPv6 address capabilities, protocols, quality of service (QoS), and more Process descriptions of IP multicast and IPv6 multicast approaches and challenges A detailed overview of IPTV systems and technologies, including architectural requirements, QoE and QoS, security and content protection, networks, and more Internet-based TV technologies: streaming, content distribution networks, P2P networks, and cloud computing Non-traditional video content sources and their implications Linear and Nonlinear Video and TV Applications: Using IPv6 and IPv6 Multicast is indispensable reading for planners, CTOs, and engineers at broadcast TV operations, Cable TV operations, satellite operations, Internet and IS providers, telcos, and wireless providers.
Prasad Ramjee Cognitive Radio Networks Prasad Ramjee Cognitive Radio Networks Новинка

Prasad Ramjee Cognitive Radio Networks

Giving a basic overview of the technologies supporting cognitive radio this introductory-level text follows a logical approach, starting with the physical layer and concluding with applications and general issues. It provides a background to advances in the field of cognitive radios and a new exploration of how these radios can work together as a network. Cognitive Radio Networks starts with an introduction to the fundamentals of wireless communications, introducing technologies such as OFDM & MIMO. It moves onto cover software defined radio and explores and contrasts wireless, cooperative and cognitive networks and communications. Spectrum sensing, medium access control and network layer design are examined before the book concludes by covering the topics of trusted cognitive radio networks and spectrum management. Unique in providing a brief but clear tutorial and reference to cognitive radio networks this book is a single reference, written at the appropriate level for newcomers as well as providing an encompassing text for those with more knowledge of the subject. One of the first books to provide a systematic description of cognitive radio networks Provides pervasive background knowledge including both wireless communications and wireless networks Written by leading experts in the field Full network stack investigation
Laberteaux Kenneth VANET. Vehicular Applications and Inter-Networking Technologies Laberteaux Kenneth VANET. Vehicular Applications and Inter-Networking Technologies Новинка

Laberteaux Kenneth VANET. Vehicular Applications and Inter-Networking Technologies

This book provides an invaluable introduction to inter-vehicular communications, demonstrating the networking and communication technologies for reducing fatalities, improving transportation efficiency, and minimising environmental impact. This book addresses the applications and technical aspects of radio-based vehicle-to-vehicle and vehicle-to-infrastructure communication that can be established by short- and medium range communication based on wireless local area network technology (primarily IEEE 802.11). It contains a coherent treatment of the important topics and technologies contributed by leading experts in the field, covering the potential applications for and their requirements on the communications system. The authors cover physical and medium access control layer issues with focus on IEEE 802.11-based systems, and show how many of the applications benefit when information is efficiently disseminated, and the techniques that provide attractive data aggregation (also includes design of the corresponding middleware). The book also considers issues such as IT-security (means and fundamental trade-off between security and privacy), current standardization activities such as IEEE 802.11p, and the IEEE 1609 standard series. Key Features: Covers the state-of-the-art in the field of vehicular inter-networks such as safety and efficiency applications, physical and medium access control layer issues, middleware, and security Shows how vehicular networks differ from other mobile networks and illustrates the idea of vehicle-to-vehicle communications with application scenarios and with current proofs of concept worldwide Addresses current standardization activities such as IEEE 802.11p and the IEEE 1609 standard series Offers a chapter on mobility models and their use for simulation of vehicular inter-networks Provides a coherent treatment of the important topics and technologies contributed by leading academic and industry experts in the field This book provides a reference for professional automotive technologists (OEMS and suppliers), professionals in the area of Intelligent Transportation Systems, and researchers attracted to the field of wireless vehicular communications. Third and fourth year undergraduate and graduate students will also find this book of interest. For additional information please visit http://www.vanetbook.com
L298N Dual H Bridge DC Stepper Motor Driver Controller for Arduino Robot Car L298N Dual H Bridge DC Stepper Motor Driver Controller for Arduino Robot Car Новинка

L298N Dual H Bridge DC Stepper Motor Driver Controller for Arduino Robot Car

Model L298N Quantity 1 Color Black Material Fiberglass Features Based on the L298N dual H-bridge IC; VMS driver terminal block voltage: 5~30V; Driver peak current: 2A; VSS logical terminal block voltage: 3.3~5.5V; logical terminal block working current: 0~47mA; Signal control input voltage range: Low 4.5~5.5V high 0V; Max power consumption: 20W; Storage temperature: -25~130'C; Other features: Direction indicators power indicator current detection logic board power supply port Application Control the speed and the direction of the DC motor or two-phase bipolar stepper motor Packing List 1 x Motor driver module 1 x Installation kit
Oliver Ibe C. Fundamentals of Stochastic Networks Oliver Ibe C. Fundamentals of Stochastic Networks Новинка

Oliver Ibe C. Fundamentals of Stochastic Networks

An interdisciplinary approach to understanding queueing and graphical networks In today's era of interdisciplinary studies and research activities, network models are becoming increasingly important in various areas where they have not regularly been used. Combining techniques from stochastic processes and graph theory to analyze the behavior of networks, Fundamentals of Stochastic Networks provides an interdisciplinary approach by including practical applications of these stochastic networks in various fields of study, from engineering and operations management to communications and the physical sciences. The author uniquely unites different types of stochastic, queueing, and graphical networks that are typically studied independently of each other. With balanced coverage, the book is organized into three succinct parts: Part I introduces basic concepts in probability and stochastic processes, with coverage on counting, Poisson, renewal, and Markov processes Part II addresses basic queueing theory, with a focus on Markovian queueing systems and also explores advanced queueing theory, queueing networks, and approximations of queueing networks Part III focuses on graphical models, presenting an introduction to graph theory along with Bayesian, Boolean, and random networks The author presents the material in a self-contained style that helps readers apply the presented methods and techniques to science and engineering applications. Numerous practical examples are also provided throughout, including all related mathematical details. Featuring basic results without heavy emphasis on proving theorems, Fundamentals of Stochastic Networks is a suitable book for courses on probability and stochastic networks, stochastic network calculus, and stochastic network optimization at the upper-undergraduate and graduate levels. The book also serves as a reference for researchers and network professionals who would like to learn more about the general principles of stochastic networks.
Sabonnadière Jean-Claude Smart Grids Sabonnadière Jean-Claude Smart Grids Новинка

Sabonnadière Jean-Claude Smart Grids

On a worldwide basis, the development of SmartGrids is a consistent answer to the problem of an efficient and sustainable delivery of electric energy through distribution grids. SmartGrids are a combination of information and communication technologies and new energy technologies. There are many different definitions of the concept of SmartGrids and thus it appears indispensable to gather the knowledge available from both industry and research laboratories in one book. Distributed generation is rightly receiving an increased amount of attention and will become an integral part of urban energy systems, providing consumers and energy providers with safe, affordable, clean, reliable, flexible and readily-accessible energy services. The aim of this book is to describe future electricity networks that will enable all energy services to become sustainable. The traditional design of network control systems with a centralized structure is not in-line with the paradigm of the unbundled electricity system and decentralized control; this is highlighted by looking at how future active networks will efficiently link small- and medium-scale power sources with consumer demands, allowing decisions to be made on how best to operate in real time. It also looks at the level of control required: power flow assessment, voltage control and protection require cost-competitive technologies and new communication systems with more sensors and actuators than presently used, certainly in relation to the distribution systems. To manage active networks, a vision of grid computing is created that assures universal access to computing resources. An intelligent grid infrastructure gives more flexibility concerning demand and supply, providing new instruments for optimal and cost-effective grid operation at the same time.
Jtron 4 String Iron Phosphate Lithium Battery Protection Board - Blue Jtron 4 String Iron Phosphate Lithium Battery Protection Board - Blue Новинка

Jtron 4 String Iron Phosphate Lithium Battery Protection Board - Blue

The protection board uses lithium iron phosphate rechargeable battery protection IC; 1. High-accuracy voltage detection circuit; 2. The terminal is connected charger with high withstand voltage devices; 3. Built-in three-stage overcurrent detection circuit (overcurrent 1 overcurrent 2 load short circuit); 4. Through the MOS transistor can control the battery charging and discharging; 5. Low standby current consumption. Welding Point: B + Connected battery cathode; B-Connected the battery negative; B1 Connected battery connection point between 1 and cell 2; B2 then the battery connection point between 2 and 3 batteries; B3 battery is connected to the battery connection points 3 and 4; P + Connected charge / discharge upright pole (charging terminal / discharge terminal shared); P-Connected charge / discharge terminal negative (charging terminal / discharge terminal share). Note: 1. Note that the input and output voltage and load current conditions the protection board power consumption does not exceed the allowable Power dissipation electrical parameters; 2. Pay particular attention to the load current can not work long hours between maximum continuous operating current and over-current protection current; 3. The situation is not likely to occur when you connect the battery discharging. In this case connect the charger can be restored to normal operation; 4. The battery over-charge and over-discharge of the battery mixed together in series the protective plate and the overcharge state of over-discharge state the battery can not be charged and discharged; 5. The protection board built-in electrostatic protection circuit but please do not hand protection when working in electrical panels to touch the plate so as to avoid damage from static electricity protection board.
6V - 90V 15A Control PWM DC Motor Speed Regulator Controller Switch 6V - 90V 15A Control PWM DC Motor Speed Regulator Controller Switch Новинка

6V - 90V 15A Control PWM DC Motor Speed Regulator Controller Switch

Speed Controller is available now from our US and UK warehouse Free shipping to US and UK in 3-6 business days ship to Other European countries in 7-10 days 6V - 90V 15A Pulse Width Control PWM DC Motor Speed Regulator Controller Switch Description: The DC Motor Speed Controller allows controlling direction of a DC motor using a Pulse-Width-Modulated (PWM) DC voltage with a Duty Cycle fully adjustable from 0% ~ 100%. The motor speed controller can provide a continuous current of 10A to your DC motor or other DC load. The circuit also includes a 20A fuse, with reverse connection of power supply and control voltage over-voltage protection function. Feature: Input supply voltage: DC 6V ~ 90V The maximum output power: 1000W The maximum continuous output current: 10A The overload and short circuit protecting current is 15A PWM frequency: 16KHz Duty Cycle adjustable: 0% ~ 100% The operation environment temperature: -20C ~ 40C The 20A fuse with reverse connection of power supply and control voltage over-voltage protection function Can adjust the speed by the external 0V ~ 5V signal Size: 64 x 59 x 28mm Note: This can NOT be used to the BRUSHLESS motor. The use of 0V ~ 5V external voltage control line description: The speed regulator supports the use of an external DC voltage control. Using the following steps: --First, remove potentiometer. (you may take it down from one side of the circuit board or potentiometer side down under your need); --Second, connecting 0V ~ 5V DC control signal to the middle pin marking 0V ~ 5V; --Third, connecting the earth wire of 0V ~ 5V DC control signal to the connecting piece on the pin marking GND; Package included: 1 x 6V ~ 90V 15A DC motor speed regulator
Francine Krief Communicating Embedded Systems. Networks Applications Francine Krief Communicating Embedded Systems. Networks Applications Новинка

Francine Krief Communicating Embedded Systems. Networks Applications

Embedded systems become more and more complex and require having some knowledge in various disciplines such as electronics, data processing, telecommunications and networks. Without detailing all the aspects related to the design of embedded systems, this book, which was written by specialists in electronics, data processing and telecommunications and networks, gives an interesting point of view of communication techniques and problems in embedded systems. This choice is easily justified by the fact that embedded systems are today massively communicating and that telecommunications and networks constitute the main sector of embedded systems.
Paolo Santi Mobility Models for Next Generation Wireless Networks. Ad Hoc, Vehicular and Mesh Networks Paolo Santi Mobility Models for Next Generation Wireless Networks. Ad Hoc, Vehicular and Mesh Networks Новинка

Paolo Santi Mobility Models for Next Generation Wireless Networks. Ad Hoc, Vehicular and Mesh Networks

Mobility Models for Next Generation Wireless Networks: Ad Hoc, Vehicular and Mesh Networks provides the reader with an overview of mobility modelling, encompassing both theoretical and practical aspects related to the challenging mobility modelling task. It also: Provides up-to-date coverage of mobility models for next generation wireless networks Offers an in-depth discussion of the most representative mobility models for major next generation wireless network application scenarios, including WLAN/mesh networks, vehicular networks, wireless sensor networks, and opportunistic networks Demonstrates the practices for designing effective protocol/applications for next generation wireless networks Includes case studies showcasing the importance of properly understanding fundamental mobility model properties in wireless network performance evaluation
Stojmenovic Ivan Wireless Sensor and Actuator Networks. Algorithms and Protocols for Scalable Coordination and Data Communication Stojmenovic Ivan Wireless Sensor and Actuator Networks. Algorithms and Protocols for Scalable Coordination and Data Communication Новинка

Stojmenovic Ivan Wireless Sensor and Actuator Networks. Algorithms and Protocols for Scalable Coordination and Data Communication

A mixture of theory, experiments, and simulations that provide qualitative and quantitative insights into the technology The important new technology of wireless sensor and actuator networks provides radically new communication and networking paradigms with many new applications. Wireless Sensor and Actuator Networks is a timely text that presents a fault-tolerant, reliable, low-latency, and energy-aware framework for wireless sensor and actuator networks, enabling readers to fulfill the ultimate goals of the applications—such as protecting critical infrastructures, achieving timely emergency responses, and monitoring the environment. Taking a problem-oriented approach, this resource discusses a wide range of computing and communication problems and solutions that arise in rapidly emerging wireless sensor and actuator networks, striking a balance between theory and practice. Discusses backbones as subsets of sensors or actuators that suffice for performing basic data communication operations or area sensing coverage Surveys existing data communication schemes (broadcasting, routing, multicasting, anycasting, geocasting) for sensor-actuator coordination Reviews the location service techniques Addresses the problem of energy-efficient data gathering by mobile sinks/actuators Describes protocols for coordination and topology control in sensor, actuator, and robot networks Reviews existing solutions to the sensor placement problem in wireless sensor and actuator networks This book is unique in that it addresses sensor and actuator networking in a comprehensive manner—covering all the aspects and providing up-to-date information—so that industry operators and academics from various areas can learn more about current networking trends, become aware of the possible architectures, and understand the advantages and limits in future commercial, social, and educational applications. Wireless Sensor and Actuator Networks is appropriate for graduate students in computer science, electrical engineering, and telecommunications, as well as practitioners working as engineers, programmers, and technologists.
ACS712 5A AC / DC Current Sensor Module w/ Protection Board for Arduino - Blue + Black ACS712 5A AC / DC Current Sensor Module w/ Protection Board for Arduino - Blue + Black Новинка

ACS712 5A AC / DC Current Sensor Module w/ Protection Board for Arduino - Blue + Black

Based on a current sensor module and based on the principle of the hall current which convert current into an analog voltage output; MCU (Arduino UNO R3) that includes AD converter can be read out and converted into measured current value; Suitable for SCM system powered by 5V power supply; Can measure AC and DC; Widely used in over-current detection current monitoring and other occasions.
Duarte OttoCarlos M.B. Virtual Networks. Pluralistic Approach for the Next Generation of Internet Duarte OttoCarlos M.B. Virtual Networks. Pluralistic Approach for the Next Generation of Internet Новинка

Duarte OttoCarlos M.B. Virtual Networks. Pluralistic Approach for the Next Generation of Internet

The first chapter of this title concerns virtualization techniques that allow sharing computational resources basically, slicing a real computational environment into virtual computational environments that are isolated from one another. The Xen and OpenFlow virtualization platforms are then presented in Chapter 2 and a performance analysis of both is provided. This chapter also defines the primitives that the network virtualization infrastructure must provide for allowing the piloting plane to manage virtual network elements. Following this, interfaces for system management of the two platforms are proposed in Chapter 3. To control and manage virtual network elements, five primitives that the network virtualization infrastructure must provide are defined: instantiate, delete, migrate, monitor and set. The book then moves on to survey existing control algorithms for virtual networking. It also describes the main challenges for packet forwarding using Xen as a virtualization tool and describes, in more detail, a proposal for local control of virtual networks. Within each physical node, this proposal guarantees the service level acquired by each virtual network, even in the presence of misbehaving virtual networks. Contents 1. Virtualization, Luís Henrique M.K. Costa. 2. Virtual Network Interfaces, Miguel Elias M. Campista. 3. Performance Improvement and Control of Virtual Network Elements, Igor M. Moraes. 4. State of the Art in Context-Aware Technologies, Edmundo R.M. Madeira and Guy Pujolle. 5. Providing Isolation and Quality-of-Service to Virtual Networks, Miguel Elias M. Campista. 6. Piloting System, Edmundo R.M. Madeira and Nelson Luis S. Da Fonseca. 7. Management and Control: The Situated View, Otto Carlos M.B. Duarte. 8. System Architecture Design, Otto Carlos M.B. Duarte. About the Authors Otto Carlos M.B. Duarte is Full Professor at Universidade Federal do Rio de Janeiro in Brazil, where he has worked since 1978. His research interests include mobile communications, security, multicast, and QoS guarantees. Guy Pujolle is currently Professor at University Pierre and Marie Curie (Paris VI) in France and a member of the Scientific Advisory Board of Orange/France Telecom Group. He has published widely in the area of computer systems modeling and performance, queuing theory, high-speed networks, intelligence in networking, wireless networks, and Post-IP networks, including 19 influential texts and monographs in these areas.
Frattasi Simone Mobile Positioning and Tracking. From Conventional to Cooperative Techniques Frattasi Simone Mobile Positioning and Tracking. From Conventional to Cooperative Techniques Новинка

Frattasi Simone Mobile Positioning and Tracking. From Conventional to Cooperative Techniques

This book presents the most recent state of the art in mobile positioning and tracking techniques. This book discusses mobile positioning solutions applied on top of current wireless communication networks. In addition, the authors introduce advanced and novel topics such as localization in heterogeneous and cooperative networks, providing a unified treatment of the topic for researchers and industry professionals alike. Furthermore, the book focuses on application areas of positioning, basics of wireless communications for positioning, data fusion and filtering techniques, fundamentals of tracking, error mitigation techniques, positioning systems and technologies, and cooperative mobile positioning systems. Key Features: Covers the state of the art of satellite- and terrestrial-based positioning systems, spanning from outdoor to indoor environments and from wide area networks to short-range networks Discusses a whole range of topics related to mobile positioning: from fundamentals of positioning to the description of a wide spectrum of mobility models for tracking, from details on data fusion and filtering techniques to error mitigation techniques (including aspects of signal processing) Provides a solid bridge between research and industry envisaging a potential implementation of the presented solutions Fills the gap between positioning and communication systems, showing how features of communication systems can be used for positioning purposes and how the retrieved location information can be used to enhance the performance of wireless networks. Includes an accompanying website This book will be a valuable guide for advanced students studying related courses. Professionals and practitioners in the field of positioning and mobile technologies, and software and service developers will also find this book of interest.
Jtron 2M542AH Stepper Motor 57 / 86 Driver Board for Engraving Machine - Black Jtron 2M542AH Stepper Motor 57 / 86 Driver Board for Engraving Machine - Black Новинка

Jtron 2M542AH Stepper Motor 57 / 86 Driver Board for Engraving Machine - Black

1. The main driver of 57 86-type two-phase hybrid stepping motor 2. The number of subdivision 14 species the maximum number of steps is 256 subdivision; 3. The operating current range of 1.0A~6A output current total have 11 files; 4. With automatic current control function the current flow is adjustable semi-automatic this feature is no other drives of the same type which can adjust the intensity of the motor locked when no impulse control. 5. The drive voltage DC power supply. Operating voltage: DC 18~85V voltage do not exceed the maximum operating voltage it is recommended to use a DC 60V or less. 6. This paragraph has driven decay mode adjustment function this function is the same type of drive is not the other it can better match the different motors vibration and noise will be reduced to the lowest. 7. With undervoltage and overvoltage protection. Function Description: Output current setting: the potentiometer setting driver output current the output current total have 11 files. The number of subdivision setting: The SW1-SW4 this four dial switch to set the number of micro-step subdivision the drive which has 14 files micro-step. When users set the micro-step you should stop the drive to run. Automatic current function: Users can through SW7 SW8 to set the drive automatic semi-flow feature. Attenuation setting: the SW5-SW6 This two DIP switches to set the drive decay modes. Signal Interface: PUL + and PUL-control pulse signal positive terminal and a negative terminal; DIR + and DIR-signal for the direction of the positive terminal and a negative terminal; EN + and EN- is the enable signal of the positive terminal and a negative terminal. Motor Interface: A + and A- connected to the positive and negative terminal of the stepper motor A phase winding; B + and B- connected to the positive and negative terminal of the stepper motor B phase winding. When the A B two-phase windings exchange can reverse the motor direction. Power Interface: V + connected to the supply positive V- connected to the supply of negative positive and negative not reversed. Indicator: drive has red and yellow these two kinds of lights the green light for the power indicator light when the drive is powering the green light on; Red is a warning indicator in the protection of the state the light is on. Installation instructions Can be vertical or horizontal installation installation should make it close to the metal cabinet to facilitate heat dissipation. Scope of application Mainly used to drive 57 86 of the 2 phase stepper motor. On the strength location has certain requirements of the occasion to achieve precise control such as CNC feeding machine CNC cutting machine. Computer engraving machine CNC lathe CNC.
Howard Berkowitz WAN Survival Guide. Strategies for VPNs and Multiservice Networks Howard Berkowitz WAN Survival Guide. Strategies for VPNs and Multiservice Networks Новинка

Howard Berkowitz WAN Survival Guide. Strategies for VPNs and Multiservice Networks

Ensure that your WAN can handle the latest technologies with this must-have strategy guide If a Wide Area Network (WAN) isn't set up properly, it won't be able to meet the needs of the applications being used in the Local Area Network (LAN). And with the emergence of new technologies such as VPNs, multi-service networks, and the mobility of corporate users, the costs involved with running a WAN have changed dramatically. Written by an expert on WAN design, this book provides a comprehensive strategy for choosing the best technologies available for your WAN. It includes analysis of business requirements for WANs, end-user and service provider requirements, and the capabilities and tradeoffs of the available technologies. The book also covers the realities and limitations of QoS, security, multi-service networks, virtual networks, VPNs, multi-homing, roaming, and mobility.
Poellabauer Christian Fundamentals of Wireless Sensor Networks. Theory and Practice Poellabauer Christian Fundamentals of Wireless Sensor Networks. Theory and Practice Новинка

Poellabauer Christian Fundamentals of Wireless Sensor Networks. Theory and Practice

In this book, the authors describe the fundamental concepts and practical aspects of wireless sensor networks. The book provides a comprehensive view to this rapidly evolving field, including its many novel applications, ranging from protecting civil infrastructure to pervasive health monitoring. Using detailed examples and illustrations, this book provides an inside track on the current state of the technology. The book is divided into three parts. In Part I, several node architectures, applications and operating systems are discussed. In Part II, the basic architectural frameworks, including the key building blocks required for constructing large-scale, energy-efficient sensor networks are presented. In Part III, the challenges and approaches pertaining to local and global management strategies are presented – this includes topics on power management, sensor node localization, time synchronization, and security. At the end of each chapter, the authors provide practical exercises to help students strengthen their grip on the subject. There are more than 200 exercises altogether. Key Features: Offers a comprehensive introduction to the theoretical and practical concepts pertaining to wireless sensor networks Explains the constraints and challenges of wireless sensor network design; and discusses the most promising solutions Provides an in-depth treatment of the most critical technologies for sensor network communications, power management, security, and programming Reviews the latest research results in sensor network design, and demonstrates how the individual components fit together to build complex sensing systems for a variety of application scenarios Includes an accompanying website containing solutions to exercises (http://www.wiley.com/go/dargie_fundamentals) This book serves as an introductory text to the field of wireless sensor networks at both graduate and advanced undergraduate level, but it will also appeal to researchers and practitioners wishing to learn about sensor network technologies and their application areas, including environmental monitoring, protection of civil infrastructure, health care, precision agriculture, traffic control, and homeland security.
KALLO Outdoor Sports UV400 Protection Polarized Sunglasses KALLO Outdoor Sports UV400 Protection Polarized Sunglasses Новинка

KALLO Outdoor Sports UV400 Protection Polarized Sunglasses

UV400 protection; Based on principle of optical polarization capable of eliminating reflected light and harmful UV; Filter the reflective flash and glare lights keep the vision clearer eliminate the eye fatigue
Guy Pujolle Software Networks. Virtualization, SDN, 5G, Security Guy Pujolle Software Networks. Virtualization, SDN, 5G, Security Новинка

Guy Pujolle Software Networks. Virtualization, SDN, 5G, Security

The goal of this book is to describe new concepts for Internet next generation. This architecture is based on virtual networking using Cloud and datacenters facilities. Main problems concern 1) the placement of virtual resources for opening a new network on the fly, and 2) the urbanisation of virtual resource implemented on physical network equipment. This architecture deals with mechanisms capable of controlling automatically the placement of all virtual resources within the physical network. In this book, we describe how to create and delete virtual networks on the fly. Indeed, the system is able to create any new network with any kind of resource (e.g., virtual switch, virtual routers, virtual LSRs, virtual optical path, virtual firewall, virtual SIP-based servers, virtual devices, virtual servers, virtual access points, and so on). We will show how this architecture is compatible with new advances in SDN (Software Defined Networking), new high-speed transport protocol like TRILL (Transparent Interconnection of Lots of Links) and LISP (Locator/Identifier Separation Protocol), NGN, IMS, Wi-Fi new generation, and 4G/5G networks. Finally, we introduce the Cloud of security and the virtualisation of secure elements (smartcard) that should definitely transform how to secure the Internet.
Lozano Rogelio Flight Formation Control Lozano Rogelio Flight Formation Control Новинка

Lozano Rogelio Flight Formation Control

10272.17 руб. Найти похожее
In the last decade the development and control of Unmanned Aerial Vehicles (UAVs) has attracted a lot of interest. Both researchers and companies have a growing interest in improving this type of vehicle given their many civilian and military applications. This book presents the state of the art in the area of UAV Flight Formation. The coordination and robust consensus approaches are presented in detail as well as formation flight control strategies which are validated in experimental platforms. It aims at helping students and academics alike to better understand what coordination and flight formation control can make possible. Several novel methods are presented: – controllability and observability of multi-agent systems; – robust consensus; – flight formation control; – stability of formations over noisy networks; which generate solutions of guaranteed performance for UAV Flight Formation. Contents 1. Introduction, J.A. Guerrero. 2. Theoretical Preliminaries, J.A. Guerrero. 3. Multiagent Coordination Strategies, J.A. Guerrero, R. Lozano, M.W. Spong, N. Chopra. 4. Robust Control Design for Multiagent Systems with Parametric Uncertainty, J.A. Guerrero, G. Romero. 5. On Adaptive and Robust Controlled Synchronization of Networked Robotic Systems on Strongly Connected Graphs, Y.-C. Liu, N. Chopra. 6. Modeling and Control of Mini UAV, G. Flores Colunga, J.A. Guerrero, J. Escareño, R. Lozano. 7. Flight Formation Control Strategies for Mini UAVs, J.A. Guerrero. 8. Formation Based on Potential Functions, L. García, A. Dzul. 9. Quadrotor Vision-Based Control, J.E. Gomez-Balderas, J.A. Guerrero, S. SALAZAR, R. Lozano, P. Castillo. 10. Toward Vision-Based Coordination of Quadrotor Platoons, L.R. García Carrillo, J.A. Guerrero, R. Lozano. 11. Optimal Guidance for Rotorcraft Platoon Formation Flying in Wind Fields, J.A. Guerrero, Y. Bestaoui, R. Lozano. 12. Impact of Wireless Medium Access Protocol on the Quadrotor Formation Control, J.A. Guerrero, Y. Challal, P. Castillo. 13. MAC Protocol for Wireless Communications, A. Mendez, M. Panduro, O. Elizarraras, D. Covarrubias. 14. Optimization of a Scannable Pattern for Bidimensional Antenna Arrays to Provide Maximum Performance, A. Reyna, M.A. Panduro, A. Mendez.
Zhuo Xu Designing and Implementing IP/MPLS-Based Ethernet Layer 2 VPN Services. An Advanced Guide for VPLS and VLL Zhuo Xu Designing and Implementing IP/MPLS-Based Ethernet Layer 2 VPN Services. An Advanced Guide for VPLS and VLL Новинка

Zhuo Xu Designing and Implementing IP/MPLS-Based Ethernet Layer 2 VPN Services. An Advanced Guide for VPLS and VLL

A guide to designing and implementing VPLS services over an IP/MPLS switched service provider backbone Today's communication providers are looking for convenience, simplicity, and flexible bandwidth across wide area networks-but with the quality of service and control that is critical for business networking applications like video, voice and data. Carrier Ethernet VPN services based on VPLS makes this a reality. Virtual Private LAN Service (VPLS) is a pseudowire (PW) based, multipoint-to-multipoint layer 2 Ethernet VPN service provided by services providers By deploying a VPLS service to customers, the operator can focus on providing high throughput, highly available Ethernet bridging services and leave the layer 3 routing decision up to the customer. Virtual Private LAN Services (VPLS) is quickly becoming the number one choice for many enterprises and service providers to deploy data communication networks. Alcatel-Lucent VPLS solution enables service providers to offer enterprise customers the operational cost benefits of Ethernet with the predictable QoS characteristics of MPLS. Items Covered: Building Converged Service Networks with IP/MPLS VPN Technology IP/MPLS VPN Multi-Service Network Overview Using MPLS Label Switched Paths as Service Transport Tunnels Routing Protocol Traffi c Engineering and CSPF RSVP-TE Protocol MPLS Resiliency – Secondary LSP MPLS Resiliency – RSVP-TE LSP Fast Reroute Label Distribution Protocol IP/MPLS VPN Service Routing Architecture Virtual Leased Line Services Virtual Private LAN Service Hierarchical VPLS High Availability in an IP/MPLS VPN Network VLL Service Resiliency VPLS Service Resiliency VPLS BGP Auto-Discovery PBB-VPLS OAM in a VPLS Service Network
Liew Soung C. Principles of Broadband Switching and Networking Liew Soung C. Principles of Broadband Switching and Networking Новинка

Liew Soung C. Principles of Broadband Switching and Networking

An authoritative introduction to the roles of switching and transmission in broadband integrated services networks Principles of Broadband Switching and Networking explains the design and analysis of switch architectures suitable for broadband integrated services networks, emphasizing packet-switched interconnection networks with distributed routing algorithms. The text examines the mathematical properties of these networks, rather than specific implementation technologies. Although the pedagogical explanations in this book are in the context of switches, many of the fundamental principles are relevant to other communication networks with regular topologies. After explaining the concept of the modern broadband integrated services network and why it is necessary in today’s society, the book moves on to basic switch design principles, discussing two types of circuit switch design—space domain and time domain—and packet switch design. Throughput improvements are illustrated by some switch design variations such as Speedup principle, Channel-Grouping principle, Knockout principle, and Dilation principle. Moving seamlessly into advanced switch design principles, the book covers switch scalability, switch design for multicasting, and path switching. Then the focus moves to broadband communications networks that make use of such switches. Readers receive a detailed introduction on how to allocate network resources and control traffic to satisfy the quality of service requirements of network users and to maximize network usage. As an epilogue, the text shows how transmission noise and packet contention have similar characteristics and can be tamed by comparable means to achieve reliable communication. Principles of Broadband Switching and Networking is written for senior undergraduate and first-year postgraduate students with a solid background in probability theory.
LXK3-20S/B 220~380V 10A Limit Switch - Black + Yellow LXK3-20S/B 220~380V 10A Limit Switch - Black + Yellow Новинка

LXK3-20S/B 220~380V 10A Limit Switch - Black + Yellow

1NO +1 NC Conatact Congfiguration screw terminal; Typically used in industrial control applications automatically monitor and indicate whether a particular device stroke limit is exceeded; High precision mechanism design provides acute operation and long life; Rated insulation voltage: 380V; Heating current: 10A; Control ability: AC-11; Rated working voltage: 380V; Rated working current: 0.8A; Rated working voltage: 220V; Rated working current: 0.15A; Short circuit protection: Short-circuit current rated fuse 1000A RL1-15/10; Operation frequency: AC 2400 times / hour DC 1200 times / hour; Lifespan: AC 1500000 times / DC 300000 times; Action repeat accuracy: In 10 times operation the maximum value (or minimum value) of the difference between the average value is no more than 0.05mm; Vibration resistance: Frequency of 10-55Hz 10G acceleration amplitude of 0.75mm
Designing and Implementing IP/MPLS-Based Ethernet Layer 2 VPN Services: An Advanced Guide for VPLS and VLL Designing and Implementing IP/MPLS-Based Ethernet Layer 2 VPN Services: An Advanced Guide for VPLS and VLL Новинка

Designing and Implementing IP/MPLS-Based Ethernet Layer 2 VPN Services: An Advanced Guide for VPLS and VLL

A guide to designing and implementing VPLS services over an IP/MPLS switched service provider backbone. Today's communication providers are looking for convenience, simplicity, and flexible bandwidth across wide area networks-but with the quality of service and control that is critical for business networking applications like video, voice and data. Carrier Ethernet VPN services based on VPLS makes this a reality. Virtual Private LAN Service (VPLS) is a pseudowire (PW) based, multipoint-to-multipoint layer 2 Ethernet VPN service provided by services providers By deploying a VPLS service to customers, the operator can focus on providing high throughput, highly available Ethernet bridging services and leave the layer 3 routing decision up to the customer. Virtual Private LAN Services (VPLS) is quickly becoming the number one choice for many enterprises and service providers to deploy data communication networks. Alcatel-Lucent VPLS solution enables service providers to offer enterprise customers the operational cost benefits of Ethernet with the predictable QoS characteristics of MPLS. Items Covered: - Building Converged Service Networks with IP/MPLS VPN Technology; - IP/MPLS VPN Multi-Service Network Overview; - Using MPLS Label Switched Paths as Service Transport Tunnels; - Routing Protocol Traffi c Engineering and CSPF; - RSVP-TE Protocol; - MPLS Resiliency - Secondary LSP; - MPLS Resiliency - RSVP-TE LSP Fast Reroute; - Label Distribution Protocol; - IP/MPLS VPN Service Routing Architecture; - Virtual Leased Line Services; - Virtual Private LAN Service; - Hierarchical VPLS; - High Availability in an IP/MPLS VPN Network; - VLL Service Resiliency; - VPLS Service Resiliency; - VPLS BGP Auto-Discovery; - PBB-VPLS; - OAM in a VPLS Service Network.
Alexander Bachmutsky System Design for Telecommunication Gateways Alexander Bachmutsky System Design for Telecommunication Gateways Новинка

Alexander Bachmutsky System Design for Telecommunication Gateways

System Design for Telecommunication Gateways provides a thorough review of designing telecommunication network equipment based on the latest hardware designs and software methods available on the market. Focusing on high-end efficient designs that challenge all aspects of the system architecture, this book helps readers to understand a broader view of the system design, analyze all its most critical components, and select the parts that best fit a particular application. In many cases new technology trends, potential future developments, system flexibility and capability extensions are outlined in preparation for the longevity typical for products in the industry. Key features: Combines software and hardware aspects of the system design. Defines components and services supported by open-source and commercial basic and extended software platforms, including operating systems, middleware, security, routing, management layer and more. Focuses on disruptive technologies. Provides guidelines for developing software architectures based on multi-threaded, multi-process, multi-instance, multi-core, multi-chip, multi-blade and multi-chassis designs. Covers a number of advanced high-speed interconnect and fabric interface technologies and their commercial implementations. Presents different system form factors from compact pizza-box styles to medium and large bladed systems, including IBM BladeCenter, ATCA and microTCA-based chassis. Describes different mezzanine cards, such as PMC, PrPMC, XMC, AMC and others.
John Voeller G. Energy Systems Security John Voeller G. Energy Systems Security Новинка

John Voeller G. Energy Systems Security

Energy Systems Security features articles from the Wiley Handbook of Science and Technology for Homeland Security covering topics related to electricity transmission grids and their protection, risk assessment of energy systems, analysis of interdependent energy networks. Methods to manage electricity transmission disturbances so as to avoid blackouts are discussed, and self-healing energy system and a nano-enabled power source are presented.
Jyrki T. J. Penttinen The Telecommunications Handbook. Engineering Guidelines for Fixed, Mobile and Satellite Systems Jyrki T. J. Penttinen The Telecommunications Handbook. Engineering Guidelines for Fixed, Mobile and Satellite Systems Новинка

Jyrki T. J. Penttinen The Telecommunications Handbook. Engineering Guidelines for Fixed, Mobile and Satellite Systems

15750.67 руб. Найти похожее
This practical handbook and reference provides a complete understanding of the telecommunications field supported by descriptions and case examples throughout Taking a practical approach, The Telecommunications Handbook examines the principles and details of all of the major and modern telecommunications systems currently available to industry and to end-users. It gives essential information about usage, architectures, functioning, planning, construction, measurements and optimisation. The structure of the book is modular, giving both overall descriptions of the architectures and functionality of typical use cases, as well as deeper and practical guidelines for telecom professionals. The focus of the book is on current and future networks, and the most up-to-date functionalities of each network are described in sufficient detail for deployment purposes. The contents include an introduction to each technology, its evolution path, feasibility and utilization, solution and network architecture, and technical functioning of the systems (signalling, coding, different modes for channel delivery and security of core and radio system). The planning of the core and radio networks (system-specific field test measurement guidelines, hands-on network planning advices and suggestions for the parameter adjustments) and future systems are also described. Each chapter covers aspects individually for easy reference, including approaches such as: functional blocks, protocol layers, hardware and software, planning, optimization, use cases, challenges, solutions to potential problems Provides very practical detail on the planning and operation of networks to enable readers to apply the content in real-world deployments Bridges the gap between the communications in the academic context and the practical knowledge and skills needed to work in the telecommunications industry Section divisions include: General theory; Fixed telecommunications; Mobile communications; Space communications; Other and special communications; and Planning and management of telecommunication networks Covers new commercial and enhanced systems deployed, such as IPv6 based networks, LTE-Advanced and GALILEO An essential reference for Technical personnel at telecom operators; equipment and terminal manufacturers; Engineers working for network operators.
Chan Tze Fun Applied Intelligent Control of Induction Motor Drives Chan Tze Fun Applied Intelligent Control of Induction Motor Drives Новинка

Chan Tze Fun Applied Intelligent Control of Induction Motor Drives

10583.45 руб. Найти похожее
Induction motors are the most important workhorses in industry. They are mostly used as constant-speed drives when fed from a voltage source of fixed frequency. Advent of advanced power electronic converters and powerful digital signal processors, however, has made possible the development of high performance, adjustable speed AC motor drives. This book aims to explore new areas of induction motor control based on artificial intelligence (AI) techniques in order to make the controller less sensitive to parameter changes. Selected AI techniques are applied for different induction motor control strategies. The book presents a practical computer simulation model of the induction motor that could be used for studying various induction motor drive operations. The control strategies explored include expert-system-based acceleration control, hybrid-fuzzy/PI two-stage control, neural-network-based direct self control, and genetic algorithm based extended Kalman filter for rotor speed estimation. There are also chapters on neural-network-based parameter estimation, genetic-algorithm-based optimized random PWM strategy, and experimental investigations. A chapter is provided as a primer for readers to get started with simulation studies on various AI techniques. Presents major artificial intelligence techniques to induction motor drives Uses a practical simulation approach to get interested readers started on drive development Authored by experienced scientists with over 20 years of experience in the field Provides numerous examples and the latest research results Simulation programs available from the book's Companion Website This book will be invaluable to graduate students and research engineers who specialize in electric motor drives, electric vehicles, and electric ship propulsion. Graduate students in intelligent control, applied electric motion, and energy, as well as engineers in industrial electronics, automation, and electrical transportation, will also find this book helpful. Simulation materials available for download at www.wiley.com/go/chanmotor
YDL- 9911-1 Super Mini Six Axis 4-CH Gyro 3D 2.4GHz Remote Control Quadcopter - White YDL- 9911-1 Super Mini Six Axis 4-CH Gyro 3D 2.4GHz Remote Control Quadcopter - White Новинка

YDL- 9911-1 Super Mini Six Axis 4-CH Gyro 3D 2.4GHz Remote Control Quadcopter - White

Exclusive first dual control mode suitable for novice players operate with entry-level models and professional players w/ technics; Multi-purpose machine the model can be operated indoors and outdoors suitable for a very wide range of players! - The product is equipped with a high-performance six-axis gyroscope can be thrown off at random angles without being affected. - This product has a 360-degree roll function forward and backward tumbling around in different directions sensitive tumbling speed precise positioning! - This product uses the 2.4GHz frequency band signal the operation is more precise more responsive remote distance farther can control several aircraft in one place at the same time without mutual interference. - This product uses high strength engineering plastics and equipped with a full range of multi-angle crash protection cover so that it has a strong anti-drop capabilities! - This product has acceleration function and is equipped with four different speed modes for choice players can choose gear based on proficiency and spatial operations! Product Details: - Thermal exhaust port design safety and protection framework safety gear night vision colorful lanterns; - Durable and collision resistant; - Precise reaction and operation; - 2.4GHz radio control ensures several helicopters work at the same time without interference.
YDL- 9911-2 Super Mini Six Axis 4-CH Gyro 3D 2.4GHz Remote Control Quadcopter - White YDL- 9911-2 Super Mini Six Axis 4-CH Gyro 3D 2.4GHz Remote Control Quadcopter - White Новинка

YDL- 9911-2 Super Mini Six Axis 4-CH Gyro 3D 2.4GHz Remote Control Quadcopter - White

Exclusive first dual control mode suitable for novice players operate with entry-level models and professional players w/ technics; Multi-purpose machine the model can be operated indoors and outdoors suitable for a very wide range of players! - The product is equipped with a high-performance six-axis gyroscope can be thrown off at random angles without being affected. - This product has a 360-degree roll function forward and backward tumbling around in different directions sensitive tumbling speed precise positioning! - This product uses the 2.4GHz frequency band signal the operation is more precise more responsive remote distance farther can control several aircraft in one place at the same time without mutual interference. - This product uses high strength engineering plastics and equipped with a full range of multi-angle crash protection cover so that it has a strong anti-drop capabilities! - This product has acceleration function and is equipped with four different speed modes for choice players can choose gear based on proficiency and spatial operations! Product Details: - Thermal exhaust port design safety and protection framework safety gear night vision colorful lanterns; - Durable and collision resistant; - Precise reaction and operation; - 2.4GHz radio control ensures several helicopters work at the same time without interference.
Akira Hirose Complex-Valued Neural Networks. Advances and Applications Akira Hirose Complex-Valued Neural Networks. Advances and Applications Новинка

Akira Hirose Complex-Valued Neural Networks. Advances and Applications

Presents the latest advances in complex-valued neural networks by demonstrating the theory in a wide range of applications Complex-valued neural networks is a rapidly developing neural network framework that utilizes complex arithmetic, exhibiting specific characteristics in its learning, self-organizing, and processing dynamics. They are highly suitable for processing complex amplitude, composed of amplitude and phase, which is one of the core concepts in physical systems to deal with electromagnetic, light, sonic/ultrasonic waves as well as quantum waves, namely, electron and superconducting waves. This fact is a critical advantage in practical applications in diverse fields of engineering, where signals are routinely analyzed and processed in time/space, frequency, and phase domains. Complex-Valued Neural Networks: Advances and Applications covers cutting-edge topics and applications surrounding this timely subject. Demonstrating advanced theories with a wide range of applications, including communication systems, image processing systems, and brain-computer interfaces, this text offers comprehensive coverage of: Conventional complex-valued neural networks Quaternionic neural networks Clifford-algebraic neural networks Presented by international experts in the field, Complex-Valued Neural Networks: Advances and Applications is ideal for advanced-level computational intelligence theorists, electromagnetic theorists, and mathematicians interested in computational intelligence, artificial intelligence, machine learning theories, and algorithms.
KEYES L293D Motor Control Shield Motor Drive Expansion Board for Arduino - Blue KEYES L293D Motor Control Shield Motor Drive Expansion Board for Arduino - Blue Новинка

KEYES L293D Motor Control Shield Motor Drive Expansion Board for Arduino - Blue

Brand KEYES Model N/A Quantity 1 Color Blue Material RF4 Features Motor drive expansion board for Arduino Specification 2 x 5V servo motors (servos) port connected to the Arduino's high-resolution high-precision timer - no jitter; Up to four bi-directional DC motor and 4-channel PWM speed (about 0.5% resolution); Up to 2 stepper motor control single / two-step control staggered or micro-step and the rotation angle control; 4-channel H-bridge: L293D chip every road and bridge to provide .0.6 A (peak 1.2A) current and with a thermal power protection 4.5V to 36V; Pull-down resistor to ensure that the motor remains stopped on power; arge terminal terminals make it easier to wire (10 - 22AWG) and power; With the Arduino reset button; 2 terminal external power supply terminal to ensure the separation of logic and motor drive power; Compatible with Mega Diecimila & Duemilanove; Download easy-to-use Arduino software library rapid project development Application Provide a full range of spare parts available to do-it-yourself enthusiasts the DIY English Manual/Spec Yes Packing List 1 x Motor drive expansion board 1 x English user manual User Manual: http://m5.img.dxcdn.com/CDDriver/CD/sku.227033.PNG
Scott Sudhoff D. Power Magnetic Devices. A Multi-Objective Design Approach Scott Sudhoff D. Power Magnetic Devices. A Multi-Objective Design Approach Новинка

Scott Sudhoff D. Power Magnetic Devices. A Multi-Objective Design Approach

Presents a multi-objective design approach to the many power magnetic devices in use today Power Magnetic Devices: A Multi-Objective Design Approach addresses the design of power magnetic devices—including inductors, transformers, electromagnets, and rotating electric machinery—using a structured design approach based on formal single- and multi-objective optimization. The book opens with a discussion of evolutionary-computing-based optimization. Magnetic analysis techniques useful to the design of all the devices considered in the book are then set forth. This material is then used for inductor design so readers can start the design process. Core loss is next considered; this material is used to support transformer design. A chapter on force and torque production feeds into a chapter on electromagnet design. This is followed by chapters on rotating machinery and the design of a permanent magnet AC machine. Finally, enhancements to the design process including thermal analysis and AC conductor losses due to skin and proximity effects are set forth. Power Magnetic Devices: Focuses on the design process as it relates to power magnetic devices such as inductors, transformers, electromagnets, and rotating machinery Offers a structured design approach based on single- and multi-objective optimization Helps experienced designers take advantage of new techniques which can yield superior designs with less engineering time Provides numerous case studies throughout the book to facilitate readers’ comprehension of the analysis and design process Includes Powerpoint-slide-based student and instructor lecture notes and MATLAB-based examples, toolboxes, and design codes Designed to support the educational needs of students, Power Magnetic Devices: A Multi-Objective Design Approach also serves as a valuable reference tool for practicing engineers and designers. MATLAB examples are available via the book support site.
Maria Iacobucci Stella Reconfigurable Radio Systems. Network Architectures and Standards Maria Iacobucci Stella Reconfigurable Radio Systems. Network Architectures and Standards Новинка

Maria Iacobucci Stella Reconfigurable Radio Systems. Network Architectures and Standards

Covers the state of the art of the technology and standards for reconfigurable radio systems, from self organizing networks and cognitive radio, through to reconfigurable architectures for networks and terminals This timely book provides a standards-based view of the development, evolution, techniques and potential future scenarios for the deployment of reconfigurable radio systems. After an introduction to radiomobile and radio systems deployed in the access network, the book describes cognitive radio concepts and capabilities, which are the basis for reconfigurable radio systems. The self-organizing network features introduced in 3GPP standards are discussed and before IEEE 802.22, the first standard based on cognitive radio, is described. Then the ETSI reconfigurable radio systems functional architecture and the IEEE 1900.4 standard for reconfigurable radio are examined. Finally, the author presents new scenarios and future visions that reconfigurable radio systems may bring. Key features:– Examines the current standards based on cognitive and reconfigurable radio, and analyses future scenarios Includes a general overview of radiomobile (i.e. GSM, UMTS, HSPA, LTE) and wireless (i.e. WLAN, WPAN, WiMAX) network architectures Features an accompanying website features links and white papers
2.4GHz Mini Handheld Wireless Keyboard with Mouse Function - Green (3*AAA) 2.4GHz Mini Handheld Wireless Keyboard with Mouse Function - Green (3*AAA) Новинка

2.4GHz Mini Handheld Wireless Keyboard with Mouse Function - Green (3*AAA)

Slim and small designed - 2.4GHz band wireless frequency - Massive 15-meter wireless range - With full keyboard function and mouse control - Easy control of PC based entertainment: Take command of your PC-based media with intuitive wave-and-click control-an easier and more natural way to enjoy your favorite media - Comes with USB receiver - Plug and play - No software installation required - Powered by 3*AAA batteries (not included)
MaiTech 42/57/86 Stepper Motor Driver / M542 4.5A / 128 Subdivision - Black MaiTech 42/57/86 Stepper Motor Driver / M542 4.5A / 128 Subdivision - Black Новинка

MaiTech 42/57/86 Stepper Motor Driver / M542 4.5A / 128 Subdivision - Black

M Series two-phase stepper motor driver is based on the sub-type drive PI current control algorithm design low noise low vibration and low heat. Can be selected via DIP switches operating current and subdivision there are 16 subdivision 16 kinds of the current selection with overvoltage undervoltage alarm phase overcurrent protection motor phase open detection the input control signals are optically isolated. Built-in self-running mode you can set up a self-running speed can also be controlled from an external signal to start and stop running and motor reversing. Pulse direction and enable end has a constant current and reverse protection can be directly connected to 4-28V signal level enable end can also be provided as an alarm output. Feature 1. Power supply:18-70V DC 2. Output Current: 16 files DIP switch selection maximum 4.5 amps (peak) 3. Current Control:. PI control algorithm low vibration low noise low heat 4. Subdivision setting: DIP switch settings optionally 16 files 5. System self-test: when drive is powered automatic detection of motor parameters thus the motor current can be optimized algorithms and anti-resonance damping algorithm 6. Control: Support Pulse and direction mode and double-pulse mode 7. Idle current: about 1 second no pulse signal input current automatically reduced by half 8. Self-running: from running by coding switch from continuous operation as well as the controlled self-running can also be subdivided switch from running speed 9. Constant current input: pulse direction and enable terminal has a constant input function can be directly connected to PLC high-voltage input signal without external series resistor buck limit protection 10. Alarm output: via internal jumpers can enable client functionality into alarm output 11. Working Temperature: 0-42 ° C [32 - 106 ° F] 12. Vibration: 5.9m/s2 max
008 0031 12V~40V 10A Pulse Width Modulation PWM DC Motor Speed Control Switch 008 0031 12V~40V 10A Pulse Width Modulation PWM DC Motor Speed Control Switch Новинка

008 0031 12V~40V 10A Pulse Width Modulation PWM DC Motor Speed Control Switch

Brand N/A Model 008 0031 Quantity 1 Color Green Material Glass fiber Specification Working voltage: DC 12V~DC 40V. Control ower: 0.01~400W. Static current: 0.02 A (standby). PWM duty ratio:10%~100%. PWM rrequency:13 KHz. Features Speed control switch Application DC motor speed control switch English Manual/Spec yes Other Type of motor: High efficiency high torque low heat DC motor with reverse polarity protection and high current protection; Dimension: 60 x 56 x 27mm; Net weight: 78g; Weight: 87g. Packing List 1 x DC motor speed control switch
Benny Bing Broadband Wireless Multimedia Networks Benny Bing Broadband Wireless Multimedia Networks Новинка

Benny Bing Broadband Wireless Multimedia Networks

Provides a clear, coherent review of all major wireless broadband standards with an emphasis on managing the explosive growth in mobile video 802.11ac/ad, 802.16m, 802.22, and LTE-Advanced are the emerging broadband wireless standards that offer many powerful wireless features. This book gives an accessible overview of the various standards and practical information on 802.11 link adaptation, 4G smartphone antenna design, wireless video streaming, and smart grids. Broadband Wireless Multimedia Networks distills the many complex wireless features in a clean and concise manner so that the reader can understand the key principles. Topics covered include adaptive modulation and coding, orthogonal frequency-division multiple access, single-carrier frequency-division multiple access, multiple antenna systems, medium access control time and frequency-division duplex, transmission, and the frame formats. With wireless operators now carrying a much greater amount of video traffic than data and voice traffic, the book also covers adaptive bit rate streaming and bandwidth management for 3D and HD video delivery to multi-screen personal devices. Featured chapters in the book are: Overview of Broadband Wireless Networks IEEE 802.11 Standard IEEE 802.16 Standard Long-Term Evolution ATSC Digital TV and IEEE 802.22 Standards Mesh, Relay, and Interworking Networks Wireless Video Streaming Green Communications in Wireless Home Area Networks Including over 180 chapter-end exercises and 200 illustrative figures; and accessible recorded tutorials, Broadband Wireless Multimedia Networks is ideal for industry professionals and practitioners, graduate students, and researchers.
Asadullah Salman Deploying IPv6 in Broadband Access Networks Asadullah Salman Deploying IPv6 in Broadband Access Networks Новинка

Asadullah Salman Deploying IPv6 in Broadband Access Networks

An essential reference for deploying IPv6 in broadband networks With the exponential growth of the Internet and increasing number of end users, service providers are increasingly looking for ways to expand their networks to meet the scalability requirements of the growing number of Internet-ready appliances or «always-on» devices. This book bridges a gap in the literature by providing coverage of Internet Protocol Version 6 (IPv6), specifically in broadband access networks. The authors, who are Cisco Certified Internetworking Experts (CCIE), provide comprehensive and first-rate coverage of: IPv6 drivers in broadband networks IPv6 deployment in Cable, DSL, ETTH, and Wireless networks Configuring and troubleshooting IPv6 gateway routers and host Configuring and troubleshooting IPv6 edge routers Configuring and troubleshooting IPv6 provisioning servers The authors also discuss challenges faced by service providers and how IPv6 addresses these issues. Additionally, the book is complemented with examples throughout to further facilitate readers' comprehension and a real large-scale IPv6 BB SP case study is presented. Deploying IPv6 in Broadband Access Networks is essential reading for network operators, network design engineers and consultants, network architects, and members of the networking community.
Zksoftware Iface301 4.3 TFT Face&RFID Card Biometric Time Attendance Access Control Support Zksoftware Iface301 4.3 TFT Face&RFID Card Biometric Time Attendance Access Control Support Новинка

Zksoftware Iface301 4.3 TFT Face&RFID Card Biometric Time Attendance Access Control Support

11356.04 руб. Найти похожее
iFace301 multi-biometric identification time attendance and access control terminal adopts ZKSoftwares latest ZEM600 platform with ZK Face 7.0 algorithm and large capacity memory. iFace series integrated 630MHz high speed ZK Multi-Bio processor and high definition infrared camera enables user identification in the dark environment. Face and fingerprint multi-biometric identification method will be applicable more widely. All operations of iFace are designed to be performed on the 4.3 inches TFT touch screen. Multi-model communications includes RS232/485 TCP/IP optional Wi-Fi or GPRS. Optional built-in 2000mAh battery eliminates the trouble of power-failure.
Jtron M542V 42/57-Type Two-Phase Stepper Motor Driver - Black Jtron M542V 42/57-Type Two-Phase Stepper Motor Driver - Black Новинка

Jtron M542V 42/57-Type Two-Phase Stepper Motor Driver - Black

Product Overview M542V2.0 type drive motor has a lower heat noise and higher running smoothly primarily driven 42 57-type two-phase hybrid stepping motor. Micro-step subdivision have 15 species the maximum number of steps to 25000Pulse/rev; their work peak current range of 1.0A~4.2A output current total have eight files the current resolution is about 0.45A; with automatic half current overvoltage and overcurrent protection functions. The drive is a DC power supply recommended operating voltage range of DC 24~36V voltage does not exceed DC 50V not less than DC 20V. Drive function Micro-step the number of subdivision settings: Drive function Micro-step subdivision the number of settings: By the SW5-SW8 four DIP switches to set the number of micro-step subdivision the drive which has 15 files micro-step. When users set the micro-step you should stop the drive to run. Output current setting: the SW1-SW3 three dial switch to set the driver output current the output current total of eight files. Automatic half current function: Users can set up automatic half current function drives through SW4.Off represents the quiescent current is set to half the dynamic current on represents a static current and dynamic current of the same. General applications should take SW4 set to off that the motor and the drive to reduce fever increased reliability. After a burst of about 0.4 seconds to stop automatically reduced to about half of the current (60% of the actual value) reduced to 36% of the theoretical heat. Signal Interface: PUL + and PUL-control pulse signal positive terminal and a negative terminal; DIR + and DIR-signal for the direction of the positive terminal and a negative terminal; ENA + and ENA-enable signal to the positive terminal and a negative terminal. Motor Interface: A + and A- connected to the positive and negative terminal of the stepper motor A phase winding; B + and B- connected to the positive and negative terminal of the stepper motor B phase winding. When the A B two-phase windings exchange can reverse the motor direction. Power Interface: DC power supply operating voltage range is recommended for the DC 20~50V Power greater than 100W. Indicator: drive has red and yellow these two kinds of lights when the drive is powering the green light on; Red is a fault indicator when an overvoltage overcurrent fault the fault lights lit. After the fault is cleared the red light is off. When a drive fails only the power on again and re-enabled in order to clear the fault. Installation Instructions Installation pitch of 112mm both horizontal and vertical installation we recommend using the vertical installation. When installed it should be close to the metal cabinet to facilitate cooling.
Zhili Sun Satellite Networking. Principles and Protocols Zhili Sun Satellite Networking. Principles and Protocols Новинка

Zhili Sun Satellite Networking. Principles and Protocols

This book provides up to date coverage of the basics of ATM and internet protocols, and characteristics of satellite networks and internetworking between satellite and terrestrial networks Satellite Networking: Principles and Protocols, Second Edition provides up to date information of the original topics in satellite networking and protocols focusing on Internet Protocols (IP) over satellites, broadband over satellites, next generation IP (IPv6) over satellites, new generation of DVB-S/S2 and DVB-RCS next generations and new services and applications. It also includes some analytical techniques for evaluation of end to end IP performance and QoS over satellite, reflecting the recent convergence of telecommunication, Internet, broadcasting and mobile networks. Topics new to this edition: Internetworking with MANET, DVB-S/S2 and DVB-RCS/RCS2 (including TCP/IP over DVB-S/RCS), recent developments in broadband satellite systems, convergence of services and network technologies (including Internet, telecom, mobile, TV, etc.), radio resource management, PEP, I-PEP, SCPS, traffic modelling and engineering with analysis and examples, and future developments of satellite networking. Provides up to date coverage of the basics of ATM and internet protocols, and characteristics of satellite networks and internetworking between satellite and terrestrial networks (e.g. mobile ad hoc networks), including coverage of new services and applications (e.g. Internet, telecom, mobile and TV) Discusses the real-time protocols including RTP, RTCP and SIP for real-time applications such as VoIP and MMC, and explains TCP/IP over satellite and evolution of IPv6 over satellite and beyond
Leonhard Korowajczuk LTE, WiMAX and WLAN Network Design, Optimization and Performance Analysis Leonhard Korowajczuk LTE, WiMAX and WLAN Network Design, Optimization and Performance Analysis Новинка

Leonhard Korowajczuk LTE, WiMAX and WLAN Network Design, Optimization and Performance Analysis

10956.99 руб. Найти похожее
A technological overview of LTE and WiMAX LTE, WiMAX and WLAN Network Design, Optimization and Performance Analysis provides a practical guide to LTE and WiMAX technologies introducing various tools and concepts used within. In addition, topics such as traffic modelling of IP-centric networks, RF propagation, fading, mobility, and indoor coverage are explored; new techniques which increase throughput such as MIMO and AAS technology are highlighted; and simulation, network design and performance analysis are also examined. Finally, in the latter part of the book Korowajczuk gives a step-by-step guide to network design, providing readers with the capability to build reliable and robust data networks. By focusing on LTE and WiMAX this book extends current network planning approaches to next generation wireless systems based on OFDMA, providing an essential resource for engineers and operators of fixed and wireless broadband data access networks. With information presented in a sequential format, LTE, WiMAX and WLAN Network Design, Optimization and Performance Analysis aids a progressive development of knowledge, complementing latter graduate and postgraduate courses while also providing a valuable resource to network designers, equipment vendors, reference material, operators, consultants, and regulators. Key Features: One of the first books to comprehensively explain and evaluate LTE Provides an unique explanation of the basic concepts involved in wireless broadband technologies and their applications in LTE, WiMAX, and WLAN before progressing to the network design Demonstrates the application of network planning for LTE and WiMAX with theoretical and practical approaches Includes all aspects of system design and optimization, such as dynamic traffic simulations, multi-layered traffic analysis, statistical interference analysis, and performance estimations
Ramji Balakrishnan Advanced QoS for Multi-Service IP/MPLS Networks Ramji Balakrishnan Advanced QoS for Multi-Service IP/MPLS Networks Новинка

Ramji Balakrishnan Advanced QoS for Multi-Service IP/MPLS Networks

Advanced QoS for Multi-Service IP/MPLS Networks is the definitive guide to Quality of Service (QoS), with comprehensive information about its features and benefits. Find a solid theoretical and practical overview of how QoS can be implemented to reach the business objectives defined for an IP/MPLS network. Topics include standard QoS models for IP/MPLS networks, essential QoS features, forwarding classes and queuing priorities, buffer management, multipoint shared queuing, hierarchical scheduling, and rate limiting. This book will enable you to create a solid QoS architecture/design, which is mandatory for prioritizing services throughout the network.
008 0030 10~110V 10A DC Motor Speed Control / PWM MACH3 Speed Control - Black + Green 008 0030 10~110V 10A DC Motor Speed Control / PWM MACH3 Speed Control - Black + Green Новинка

008 0030 10~110V 10A DC Motor Speed Control / PWM MACH3 Speed Control - Black + Green

Brand N/A Model 008 0030 Quantity 1 Color Green + black Material Glass fiber Specification DC: 15~160V input; AC: 12~110V input; Max. power supply: AC 110V Features Can support AC and DC input; Non-existent power supply polarity problems; Ultra-high voltage scope; Large radiator with mounting holes; Ultra-high-power control up to 10A current; Besides the board inside can produce a PWM speed control it also supports an external PWM signal input speed control which required: level 3.5-12V VPP the frequency: 1K-10KHZ in particular suitable for MCH3 spindle speed control; Supports a wide range of motors; Can control most DC motors in the market as long as the DC resistance of the motor is greater than 2 Ohms; Note: this device can not control speed for those DC resistance is lower than 2ohms; Transfer rate: 97%; Limit power won't beyond 2W at DC 160V 2A; Equipped with a fuse protection better performance; With power indicator convenient to use Application Driven from 5V to 110V DC motor DC motor speed control such as equipment of DC pumps fans engraving machinespindle speed of the DC motor for precise control. English Manual/Spec Yes Packing List 1 x Speed controler 1 x Potentiometer (50cm cable)
Steve Dawson Internal Control/Anti-Fraud Program Design for the Small Business. A Guide for Companies NOT Subject to the Sarbanes-Oxley Act Steve Dawson Internal Control/Anti-Fraud Program Design for the Small Business. A Guide for Companies NOT Subject to the Sarbanes-Oxley Act Новинка

Steve Dawson Internal Control/Anti-Fraud Program Design for the Small Business. A Guide for Companies NOT Subject to the Sarbanes-Oxley Act

A how-to guide to small business anti-fraud protection and internal control Internal Control/Anti-Fraud Program Design for the Small Business is a practical guide to protection for businesses NOT subject to the Sarbanes-Oxley Act. Written by an expert with three decades of forensic investigation experience, this book is geared specifically toward private, non-public small businesses and their unique needs in the realm of fraud protection. Covering all elements of an internal control structure applicable to the small business community, this guide provides a step-by-step roadmap for designing and implementing an effective, efficient internal control structure/anti-fraud program tailored to your business's particular needs. Case studies are used throughout to illustrate internal control weaknesses and the fraud that can result, and follow-up analysis describes the controls that would have reduced the probability of fraud had they been in place. You'll learn how to analyze your company's internal control issues, and implement a robust system for fraud prevention. Guidance toward Sarbanes-Oxley compliance is readily available, but there is little information available for the many businesses not subject to the act —until now. This book is the step-by-step guide for instituting an internal control program tailored to your small business. Understand the five elements of internal control Avoid gaps in protection with relevant controls Design the ultimate anti-fraud program Implement internal control tailored to your needs The majority of small business owners simply do not know the elements of or implementation process involved in internal control, and Sarbanes-Oxley guidelines don't necessarily scale down. Internal Control/Anti-Fraud Program Design for the Small Business helps you design and install the internal control/anti-fraud protection your business needs.
Kallo A1301G Outdoor Sports UV400 Protection Polarized Sunglasses - Black Kallo A1301G Outdoor Sports UV400 Protection Polarized Sunglasses - Black Новинка

Kallo A1301G Outdoor Sports UV400 Protection Polarized Sunglasses - Black

UV400 protection; Based on principle of optical polarization capable of eliminating reflected light and harmful UV; Filter the reflective flash and glare lights keep the vision clearer eliminate the eye fatigue; Suitable for driving fishing climbing snow mountain and other outdoor sports
Peter Davis T. Wireless Networks For Dummies Peter Davis T. Wireless Networks For Dummies Новинка

Peter Davis T. Wireless Networks For Dummies

You’ve probably heard the expression, “It’s time to cut the cord.” Well, it may be time to “cut the cables” at your office and free yourself from your desk and computer. Wireless networks are the waves of the future—literally. Wireless Networks For Dummies guides you from design through implementation to ongoing protection of your system and your information so you can: Remain connected to the office in airports and hotels Access the Internet and other network resources in the lunchroom, conference room, or anywhere there’s an access point Use your PDA or laptop to query your database from the warehouse or the boardroom Check e-mail wirelessly when you’re on the road Get rid of the cable clutter in your office Wireless Networks For Dummies was coauthored by Barry D. Lewis, CISSP, and Peter T. Davis, who also coauthored Computer Security For Dummies. Barry Lewis is president of an information security consulting firm and an internationally known leader of security seminars. Peter Davis is founder of a firm specializing in the security, audit, and control of information. Together, they cut through the cables, clutter, and confusion and help you: Get off to a quick start and get mobile with IrDA (Infrared Data Association) and Bluetooth Perform a site survey and select the right standard, mode, access point, channel and antenna Check online to verify degree of interoperability of devices from various vendors Install clients and set up roaming Combat security threats such as war driving, jamming, hijacking, and man-in-the-middle attacks Implement security and controls such as MAC (Media Access Control) and protocol filtering, WEP (Wireless Equivalent Privacy), WPA, (Wi-Fi Protected Access), EAP (Extensible Authentication Protocol), and VPN (Virtual Private Network) Set up multiple access points to form a larger wireless network Complete with suggestions of places to get connected, Web sites where you can get more information, tools you can use to monitor and improve security, and more, Wireless Networks For Dummies helps you pull the plug and go wireless!

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1. The main driver of 57 86-type two-phase hybrid stepping motor 2. The number of subdivision 14 species the maximum number of steps is 256 subdivision; 3. The operating current range of 1.0A~6A output current total have 11 files; 4. With automatic current control function the current flow is adjustable semi-automatic this feature is no other drives of the same type which can adjust the intensity of the motor locked when no impulse control. 5. The drive voltage DC power supply. Operating voltage: DC 18~85V voltage do not exceed the maximum operating voltage it is recommended to use a DC 60V or less. 6. This paragraph has driven decay mode adjustment function this function is the same type of drive is not the other it can better match the different motors vibration and noise will be reduced to the lowest. 7. With undervoltage and overvoltage protection. Function Description: Output current setting: the potentiometer setting driver output current the output current total have 11 files. The number of subdivision setting: The SW1-SW4 this four dial switch to set the number of micro-step subdivision the drive which has 14 files micro-step. When users set the micro-step you should stop the drive to run. Automatic current function: Users can through SW7 SW8 to set the drive automatic semi-flow feature. Attenuation setting: the SW5-SW6 This two DIP switches to set the drive decay modes. Signal Interface: PUL + and PUL-control pulse signal positive terminal and a negative terminal; DIR + and DIR-signal for the direction of the positive terminal and a negative terminal; EN + and EN- is the enable signal of the positive terminal and a negative terminal. Motor Interface: A + and A- connected to the positive and negative terminal of the stepper motor A phase winding; B + and B- connected to the positive and negative terminal of the stepper motor B phase winding. When the A B two-phase windings exchange can reverse the motor direction. Power Interface: V + connected to the supply positive V- connected to the supply of negative positive and negative not reversed. Indicator: drive has red and yellow these two kinds of lights the green light for the power indicator light when the drive is powering the green light on; Red is a warning indicator in the protection of the state the light is on. Installation instructions Can be vertical or horizontal installation installation should make it close to the metal cabinet to facilitate heat dissipation. Scope of application Mainly used to drive 57 86 of the 2 phase stepper motor. On the strength location has certain requirements of the occasion to achieve precise control such as CNC feeding machine CNC cutting machine. Computer engraving machine CNC lathe CNC.
Продажа control and protection of vsc based multi terminal dc networks лучших цены всего мира
Посредством этого сайта магазина - каталога товаров мы очень легко осуществляем продажу control and protection of vsc based multi terminal dc networks у одного из интернет-магазинов проверенных фирм. Определитесь с вашими предпочтениями один интернет-магазин, с лучшей ценой продукта. Прочитав рекомендации по продаже control and protection of vsc based multi terminal dc networks легко охарактеризовать производителя как превосходную и доступную фирму.