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2017 | Book

Multilayer Control of Networked Cyber-Physical Systems

Application to Monitoring, Autonomous and Robot Systems

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About this book

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.

Table of Contents

Frontmatter
Chapter 1. Multilayer Control System Framework for Cyber-Physical Systems
Abstract
The chapter introduces the Networked Cyber-Physical System (NCPS) model and the multilayer control system conceptual framework. The latter considers two control systems located at two layers: network layer control system and application layer control system. A cooperative consensus-based algorithm and the related performance metrics are introduced for each layer.
Sabato Manfredi
Chapter 2. Network Layer Control System: Consensus-Based Control, Theoretical Results and Performance Issues
Abstract
In this chapter we formulate consensus-based algorithms operating at the network layer of the multilayer control system in Fig. 1.​2. We first define the concept of bottleneck switches/router cooperation and then present a network queue fluid model of the heterogeneous sources accessing to multi-bottleneck network. Finally we formulate a consensus-based cooperative control law that: (i) stabilizes the network; (ii) balances the queue length at a specified set point value \(q_0\), reducing packet loss and improving link utilization; (iii) guarantees max–min fair allocation. The control algorithm can be implemented by end-to-end and hop-by-hop communication mechanism respectively over wired and wireless networks.
Sabato Manfredi
Chapter 3. Application Layer Control System: Consensus-Based Control, Theoretical Results and Performance Issues
Abstract
In this chapter, we formulate consensus-based algorithms operating at the application layer of the multilayer control system in Fig. 1.​2. The proposed algorithms deal with the physical variables of the NCPS and can be used for monitoring and control purposes. Sufficient conditions for the application layer control system stability are presented and used for algorithm design. Performance and implementation issues are also remarked. Finally, design methodology of the overall multilayer control system in Fig. 1.​2 is pointed out.
Sabato Manfredi
Chapter 4. Application to Control of Networked Queue Systems
Abstract
In this chapter we present examples of application of the consensus-based algorithms introduced in Chap. 2 to deal with different network layer control system requirements of the NCPS. Specifically, we face the challenging issues of load balancing and rate control for: (i) wired networks (e.g., supporting end-to-end teleoperations of NCPSs); (ii) wireless networks (e.g., supporting NCPS hop-by-hop functionalities in industrial monitoring and control), and (iii) Content delivery networks (e.g., supporting service delivery of autonomous systems).
Sabato Manfredi
Chapter 5. Application to Cyber-Physical Systems
Abstract
In this chapter we present examples of application of the consensus-based algorithms introduced in Chaps. 2 and 3 to representative Cyber-Physical Systems like: (i) mobile wireless body area networks for patient monitoring; (ii) wireless networked monitoring systems to estimate in a distributed way a physical variable of interest; and (iii) wireless robot autonomous systems. Design and co-design procedures to tune algorithm parameters are outlined and simulation validation results are presented.
Sabato Manfredi
Correction to: Multilayer Control of Networked Cyber-Physical Systems
Sabato Manfredi
Backmatter
Metadata
Title
Multilayer Control of Networked Cyber-Physical Systems
Author
Sabato Manfredi
Copyright Year
2017
Electronic ISBN
978-3-319-41646-5
Print ISBN
978-3-319-41645-8
DOI
https://doi.org/10.1007/978-3-319-41646-5