期刊
SYSTEMS & CONTROL LETTERS
卷 61, 期 5, 页码 666-675出版社
ELSEVIER
DOI: 10.1016/j.sysconle.2012.03.002
关键词
Networked Control Systems; Scheduling protocols; Lyapunov-Krasovskii method
资金
- Israel Science Foundation [754/10]
- China Scholarship Council
This paper analyzes the exponential stability and the induced L-2-gain of Networked Control Systems (NCS) that are subject to time-varying transmission intervals, time-varying transmission delays and communication constraints. The system sensor nodes are supposed to be distributed over a network. The scheduling of sensor information towards the controller is ruled by the classical Round-Robin protocol. We develop a time-delay approach for this problem by presenting the closed-loop system as a switched system with multiple and ordered time-varying delays. Linear Matrix Inequalities (LMIs) are derived via appropriate Lyapunov-Krasovskii-based methods. Polytopic uncertainties in the system model can be easily included in the analysis. The efficiency of the method is illustrated on the batch reactor and on the cart-pendulum benchmark problems. Our results essentially improve the hybrid system-based ones and, for the first time, allow treating the case of non-small network-induced delay, which can be greater than the sampling interval. (C) 2012 Elsevier BA/. All rights reserved.
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