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Author: Cameron Nowzari Publisher: ISBN: 9781303462696 Category : Languages : en Pages : 159
Book Description
As computer-controlled systems become more and more ubiquitous in today's world, the physical challenges that must be overcome to ensure their reliable and efficient operation become extremely important. In general, controllers are designed assuming perfect information is available at all times and actuators can be updated continuously. When resources such as actuator power or energy consumption are not factors, this is not a problem because the controller can take samples and update the control signals fast enough so that the system behaves as close to ideally as possible. But now as we move steadfast into the age where we want everything to be smaller and more portable, physical constraints such as battery life become major limiting factors to what we can achieve. Furthermore, when considering wireless networks of cyber-physical systems, the coupled physical constraints become an even larger challenge, making it unrealistic to continue blindly using controllers that assume ideal scenarios. This naturally gives rise to the study of robustness of controllers. In other words, given a system and an ideal controller, how fast must the controller sample the state and update the actuator signals such that the system behaves in the intended way? Rather than answering the above questions directly, we are interested in finding control strategies that account for these uncertainties at the design stage. While it is certainly easier to design controllers for systems that have perfect information at all times, it is just not practical in the real world. In this dissertation we explore various existing and new methods of endowing cyber-physical systems with sufficient autonomy to allow them to determine when and what kind of information is needed to perform a given task with a desired quality of service. The core of this dissertation is rooted at ideas developed from event- and self-triggered control strategies which we apply to a variety of different goals. We also provide a novel framework for a new method we call the team-triggered control strategy. This strategy combines the strengths of event- and self-triggered control and shows a lot of promise in efficiently controlling networks of cyber-physical systems.
Author: Cameron Nowzari Publisher: ISBN: 9781303462696 Category : Languages : en Pages : 159
Book Description
As computer-controlled systems become more and more ubiquitous in today's world, the physical challenges that must be overcome to ensure their reliable and efficient operation become extremely important. In general, controllers are designed assuming perfect information is available at all times and actuators can be updated continuously. When resources such as actuator power or energy consumption are not factors, this is not a problem because the controller can take samples and update the control signals fast enough so that the system behaves as close to ideally as possible. But now as we move steadfast into the age where we want everything to be smaller and more portable, physical constraints such as battery life become major limiting factors to what we can achieve. Furthermore, when considering wireless networks of cyber-physical systems, the coupled physical constraints become an even larger challenge, making it unrealistic to continue blindly using controllers that assume ideal scenarios. This naturally gives rise to the study of robustness of controllers. In other words, given a system and an ideal controller, how fast must the controller sample the state and update the actuator signals such that the system behaves in the intended way? Rather than answering the above questions directly, we are interested in finding control strategies that account for these uncertainties at the design stage. While it is certainly easier to design controllers for systems that have perfect information at all times, it is just not practical in the real world. In this dissertation we explore various existing and new methods of endowing cyber-physical systems with sufficient autonomy to allow them to determine when and what kind of information is needed to perform a given task with a desired quality of service. The core of this dissertation is rooted at ideas developed from event- and self-triggered control strategies which we apply to a variety of different goals. We also provide a novel framework for a new method we call the team-triggered control strategy. This strategy combines the strengths of event- and self-triggered control and shows a lot of promise in efficiently controlling networks of cyber-physical systems.
Author: Jinhui Zhang Publisher: CRC Press ISBN: 1000534286 Category : Computers Languages : en Pages : 221
Book Description
The insertion of communication networks in feedback control loops complicates analysis and synthesis of cyber-physical systems (CPSs), and network-induced uncertainties may degrade system control performance. Thus, this book researches networked delay compensation and event-triggered control approaches for a series of CPSs subject to network-induced uncertainties. The authors begin with an introduction to the concepts and challenges of CPSs, followed by an overview of networked control approaches and event-triggered control strategies in CPSs. Then, networked delay compensation and event-triggered control approaches are proposed for CPSs with network communication delay, data dropout, signal quantization, and event-triggered communication. More specifically, networked delay compensation approaches are proposed for linear/nonlinear networked controlled plants with time-varying and random network communication delays and data dropouts. To reduce computational burden and network communication loads in CPSs, event-triggered control, self-triggered control, co-design of event-triggered control and quantized control techniques, and event-triggered disturbance rejection control approaches are also presented. This book is an essential text for researchers and engineers interested in cybersecurity, networked control, and CPSs. It would also prove useful for graduate students in the fields of science, engineering, and computer science.
Author: Sabato Manfredi Publisher: Springer ISBN: 3319416464 Category : Technology & Engineering Languages : en Pages : 153
Book Description
This book faces the interdisciplinary challenge of formulating performance-assessing design approaches for networked cyber-physical systems (NCPSs). Its novel distributed multilayer cooperative control deals simultaneously with communication-network and control performance required for the network and application layers of an NCPS respectively. Practically, it distributes the computational burden among different devices, which act cooperatively to achieve NCPS goals. The approach can be applied to NCPSs based on both wired and wireless technologies and so is suitable for future network infrastructures in which different protocols and technologies coexist. The book reports realistic results from performance evaluation of the new approach, when applied in different operative scenarios. Readers of this book will benefit by: learning a general, technology-independent methodology for the design and implementation of cooperative distributed algorithms for flow control at the network layer of an NCPS that gives algorithm-parameter-tuning guidelines for assessing the desired quality of service performance; learning a general methodology for the design and implementation of consensus-based algorithms at the application layer that allows monitoring and control of distributed physical systems and gives algorithm-parameter-tuning guidelines for assessing the desired control system performance; understanding the main network simulators needed to validate the effectiveness of the proposed multilayer control approach in different realistic network operation scenarios; and practising with a cooperative multilayer control project that assesses acceptable NCPS performance in networked monitoring and robot systems, autonomous and queuing networks, and other critical human relief applications. Researchers, graduate students and practitioners working in automation, engineering, sensor networks, mobile robotics and computer networks will find this book instructive. It will also be helpful to network administrators and technicians implementing application-layer and network-layer solutions or installing, configuring or troubleshooting network and control system components of NCPSs.
Author: Alberto Bemporad Publisher: Springer ISBN: 0857290339 Category : Mathematics Languages : en Pages : 373
Book Description
This book nds its origin in the WIDE PhD School on Networked Control Systems, which we organized in July 2009 in Siena, Italy. Having gathered experts on all the aspects of networked control systems, it was a small step to go from the summer school to the book, certainly given the enthusiasm of the lecturers at the school. We felt that a book collecting overviewson the important developmentsand open pr- lems in the eld of networked control systems could stimulate and support future research in this appealing area. Given the tremendouscurrentinterests in distributed control exploiting wired and wireless communication networks, the time seemed to be right for the book that lies now in front of you. The goal of the book is to set out the core techniques and tools that are ava- able for the modeling, analysis and design of networked control systems. Roughly speaking, the book consists of three parts. The rst part presents architectures for distributed control systems and models of wired and wireless communication n- works. In particular, in the rst chapter important technological and architectural aspects on distributed control systems are discussed. The second chapter provides insight in the behavior of communication channels in terms of delays, packet loss and information constraints leading to suitable modeling paradigms for commu- cation networks.
Author: Alexander Guda Publisher: Springer Nature ISBN: 3031110587 Category : Technology & Engineering Languages : en Pages : 1646
Book Description
This book is a collection of the latest research findings in such areas as networked multi-agent systems, co-design of communication and control, distributed control strategies that can cope with asynchrony between local loops, event-triggered control, modelling of network infrastructure, novel concepts of distributed control for networked and cyber-physical systems. The book contains the result of the latest research in the field of communication and control system design to support networked control systems with stringent real-time requirements. It introduces readers to research in the field of joint design of the control and communication protocol and presents the latest developments in the area of novel optimal control and scheduling designs under resource constraints. The book also covers the issues of creating emerging information and communication technologies for traffic estimation and control, connected and autonomous technology applications and modelling for commercial and shared vehicle operations. The reader will find information on emerging cyber-physical systems, networked multi-agent systems, large-scale distributed energy systems, as well as on real-time systems, safety and security systems. A significant block of studies is devoted to the topic of transitions towards electrification and automation of vehicles. Modern concepts of road infrastructure construction are described in detail in the presented research papers. Automotive industry professionals will be particularly interested in the sections on the novel mechanisms for medium access in multi-hop wireless networks with real-time requirements, optimal layering architecture and co-design for wireless communication. The book will be incredibly interesting for researchers interested in human–digital interfaces, industrial Internet of Things, artificial intelligence and machine learning.
Author: Huadong Mo Publisher: John Wiley & Sons ISBN: 1119682673 Category : Technology & Engineering Languages : en Pages : 228
Book Description
CYBER-PHYSICAL DISTRIBUTED SYSTEMS Gather detailed knowledge and insights into cyber-physical systems behaviors from a cutting-edge reference written by leading voices in the field In Cyber-Physical Distributed Systems: Modeling, Reliability Analysis and Applications, distinguished researchers and authors Drs. Huadong Mo, Giovanni Sansavini, and Min Xie deliver a detailed exploration of the modeling and reliability analysis of cyber physical systems through applications in infrastructure and energy and power systems. The book focuses on the integrated modeling of systems that bring together physical and cyber elements and analyzing their stochastic behaviors and reliability with a view to controlling and managing them. The book offers a comprehensive treatment on the aging process and corresponding online maintenance, network degradation, and cyber-attacks occurring in cyber-physical systems. The authors include many illustrative examples and case studies based on real-world systems and offer readers a rich set of references for further research and study. Cyber-Physical Distributed Systems covers recent advances in combinatorial models and algorithms for cyber-physical systems modeling and analysis. The book also includes: A general introduction to traditional physical/cyber systems, and the challenges, research trends, and opportunities for real cyber-physical systems applications that general readers will find interesting and useful Discussions of general modeling, assessment, verification, and optimization of industrial cyber-physical systems Explorations of stability analysis and enhancement of cyber-physical systems, including the integration of physical systems and open communication networks A detailed treatment of a system-of-systems framework for the reliability analysis and optimal maintenance of distributed systems with aging components Perfect for undergraduate and graduate students in computer science, electrical engineering, cyber security, industrial and system engineering departments, Cyber-Physical Distributed Systems will also earn a place on the bookshelves of students taking courses related to reliability, risk and control engineering from a system perspective. Reliability, safety and industrial control professionals will also benefit greatly from this book.
Author: Magdi S. Mahmoud Publisher: Butterworth-Heinemann ISBN: 0128163011 Category : Technology & Engineering Languages : en Pages : 504
Book Description
Networked Control Systems: Cloud Control and Secure Control explores new technological developments in networked control systems (NCS), including new techniques, such as event-triggered, secure and cloud control. It provides the fundamentals and underlying issues of networked control systems under normal operating environments and under cyberphysical attack. The book includes a critical examination of the principles of cloud computing, cloud control systems design, the available techniques of secure control design to NCS’s under cyberphysical attack, along with strategies for resilient and secure control of cyberphysical systems. Smart grid infrastructures are also discussed, providing diagnosis methods to analyze and counteract impacts. Finally, a series of practical case studies are provided to cover a range of NCS’s. This book is an essential resource for professionals and graduate students working in the fields of networked control systems, signal processing and distributed estimation. Provides coverage of cloud-based approaches to control systems and secure control methodologies to protect cyberphysical systems against various types of malicious attacks Provides an overview of control research literature and explores future developments and solutions Includes case studies that offer solutions for issues with modeling, quantization, packet dropout, time delay and communication constraints
Author: Danielle C. Tarraf Publisher: Springer ISBN: 3319011596 Category : Technology & Engineering Languages : en Pages : 379
Book Description
Cyber-physical systems (CPS) involve deeply integrated, tightly coupled computational and physical components. These systems, spanning multiple scientific and technological domains, are highly complex and pose several fundamental challenges. They are also critically important to society’s advancement and security. The design and deployment of the adaptable, reliable CPS of tomorrow requires the development of a basic science foundation, synergistically drawing on various branches of engineering, mathematics, computer science, and domain specific knowledge. This book brings together 19 invited papers presented at the Workshop on Control of Cyber-Physical Systems, hosted by the Department of Electrical & Computer Engineering at The Johns Hopkins University in March 2013. It highlights the central role of control theory and systems thinking in developing the theory of CPS, in addressing the challenges of cyber-trust and cyber-security, and in advancing emerging cyber-physical applications ranging from smart grids to smart buildings, cars and robotic systems.
Author: Cameron Nowzari
Author: Cameron Nowzari
Author: Jinhui Zhang
Author: Sabato Manfredi
Author: Alberto Bemporad
Author: Alexander Guda
Author: Huadong Mo
Author: Manuel Mazo Espinosa
Author: Xiaolei Li
Author: Magdi S. Mahmoud
Author: Danielle C. Tarraf