Protocol for Energy-Efficiency in Networked Control Systems Based on WSN

Author(s)

Palma, Jonathan M. ^[1] ; Duran-Faundez, Cristian ^[2] ; Carvalho, Leonardo de P. ^[3] ; Morais, Cecilia F. ^[1] ; Oliveira, Ricardo C. L. F. ^[1] ; Rubio, Ernesto ^[2] ; Herman, Krzysztof ^[2]

Affiliation

^[1] Univ Campinas UNICAMP Campinas, Sch Elect & Comp Engn, BR-13083852 Sao Paulo - Brazil

^[2] Univ Bio Bio, Dept Elect & Elect Engn, Concepcion 4081112 - Chile

^[3] Univ Sao Paulo, Lab Automacao & Controle, BR-05508900 Sao Paulo - Brazil

• Document type: Journal article
• Source: SENSORS; v. 18, n. 8 AUG 2018.
• Web of Science Citations: 2

Abstract

This paper proposes a new communication protocol for output-feedback control through multi-hop Wireless Sensor Network (WSN). The protocol is based on a Hop-by-Hop transport scheme and is especially devised to simultaneously fulfill two conflicting criteria: the network energy consumption and the stability/performance (in terms of H-infinity norm) of the closed-loop system. The proposed protocol can be implemented by means of three heuristics, basically using distinct rules to control the maximum number of retransmissions allowed in terms of the voltage level of the batteries of the network nodes. As another contribution, a Markov jump based representation is proposed to model the packet loss in the communication channel, giving rise to a systematic procedure to determine the transition probability matrix and the Markov chain operation modes of a network with multiple information sources. The synthesis of the output-feedback controller is made in two steps (observer filter plus a state-feedback controller) for the Markov model assuming partial availability of the operation modes. The efficiency and applicability of the communication protocol is illustrated by means of a numerical experiment, based on a physical model of a coupled tanks plant. The features of each heuristic of implementation of the proposed protocol are presented in the numerical comparisons. (AU)

• FAPESP's process: 17/18785-5 - Parameter-Dependent Linear Matrix Inequalities Applied to Stability Analysis and Synthesis of Controllers and Filters for Uncertain Dynamic Systems
• Grantee: Pedro Luis Dias Peres
• Support Opportunities: Regular Research Grants
• FAPESP's process: 14/22881-1 - Control of switched systems, Markov jump linear systems and other classes of hybrid systems through LMIs
• Grantee: Cecília de Freitas Morais
• Support Opportunities: Scholarships in Brazil - Post-Doctoral