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Indexed by:期刊论文

Date of Publication:2013-03-01

Journal:INFORMATION SCIENCES

Included Journals:SCIE、EI、Scopus

Volume:224

Page Number:200-212

ISSN No.:0020-0255

Key Words:Asynchronous switching; H-infinity filtering; Discrete-time switched systems; Exponential mean-square stability; Time-varying delay

Abstract:This paper considers the H-infinity filtering problem of discrete-time switched delay systems. Attention is focused on the design of an exponentially mean-square stable filter taking the asynchronous switching and missing measurements. into account. New results on exponential mean-square stability and a weighted l(2)-gain analysis for filtering error system are given. The closed-loop system is allowed to be unstable during the unmatched interval in which the switching signal of filter is different from that of the system. By using the average dwell time (ADT) and the Lyapunov-Krasovskii function methods, delay-dependent sufficient conditions for the desired H-infinity filter are derived in terms of linear matrix inequalities (LMIs). A numerical example is provided to demonstrate the effectiveness of the proposed design approach. (C) 2012 Elsevier Inc. All rights reserved.