Communication schemes for centralized and decentralized event-triggered control systems

Journal article (2017)

Authors

Sokratis Kartakis Imperial College London
A. Fu Team Tamas Keviczky - Mechanical, Maritime and Materials Engineering
M. Mazo Team Tamas Keviczky - Mechanical, Maritime and Materials Engineering
Julie A. McCann Imperial College London
Research Group
Team Tamas Keviczky (Mechanical, Maritime and Materials Engineering) (TU Delft)
Copyright: © 2017 Sokratis Kartakis, A. Fu, M. Mazo, Julie A. McCann
DOI: https://doi.org/10.1109/TCST.2017.2753166
Networked control systems Actuators Wireless sensor networks Robot sensing systems Wireless communication Communication protocols Cyber-physical systems (CPSs) Event-triggered control (ETC) Media Access Protocol Wireless sensor/actuator networks
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Published Date

2017

Language

English

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Faculty

Mechanical, Maritime and Materials Engineering

Department

Delft Center for Systems and Control

Research Group

Team Tamas Keviczky

Abstract

Energy constraint long-range wireless sensor/actuator-based solutions are theoretically the perfect choice to support the next generation of city-scale cyber-physical systems. Traditional systems adopt periodic control which increases network congestion and actuations while burdens the energy consumption. Recent control theory studies overcome these problems by introducing aperiodic strategies, such as event-triggered control (ETC). In spite of the potential savings, these strategies assume actuator continuous listening, while ignoring the sensing energy costs. In this paper, we fill this gap, by enabling sensing and actuator listening duty cycling and proposing two innovative medium access control protocols for three decentralized ETC approaches. A laboratory experimental test bed, which emulates a smart water network, was modeled and extended to evaluate the impact of system parameters and the performance of each approach. Experimental results reveal the predominance of the decentralized ETC against the classic periodic control either in terms of communication or actuation by promising significant system lifetime extension.