Quantized output feedback control for networked control systems. (English) Zbl 1179.93096

Tian, Engang; Yue, Dong; Peng, Chen

Inf. Sci. 178, No. 12, 2734-2749 (2008).

Summary: This paper addresses the problem of output feedback control for Networked Control Systems (NCSs) with limited communication capacity. Firstly, we propose a new model to describe the non-ideal network conditions and the input/output state quantization of the NCSs in a unified framework. Secondly, based on our newly proposed model and an improved separation lemma, an observer-based controller is developed for the asymptotical stabilization of the NCSs, which are shown in terms of nonlinear matrices inequalities. The nonlinear problems can be computed through solving a convex optimization problems, and the observed and controller gains could be derived by solving a set of linear matrix inequalities. Thirdly, two simulation examples are given to demonstrate the effectiveness of the proposed method.

MSC:

93B52	Feedback control
93C10	Nonlinear systems in control theory
15A39	Linear inequalities of matrices
93A14	Decentralized systems

Keywords:

networked control systems; data quantization; Lyapunov functional approach; output feedback control; linear matrix inequalities (LMIs)

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