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论文类型：期刊论文

发表时间：2015-02-01

发表刊物：TRANSACTIONS OF THE INSTITUTE OF MEASUREMENT AND CONTROL

收录刊物：SCIE、EI、Scopus

卷号：37

期号：2

页面范围：230-241

ISSN号：0142-3312

关键字：Fast switching controller; fuzzy system; observer; switching law; switched system; tracking control

摘要：Observer-based robust tracking control for a class of switched fuzzy (SF) systems with time delay is investigated in this paper. An SF system, which differs from the existing systems, is first employed to describe a non-linear system. Next, a fast switching controller consisting of a number of simple sub-controllers is proposed. The designed controller based on measured output instead of the state information integrates the advantages of both the linear and switching state-feedback controllers but eliminates their disadvantages. Tracking hybrid control schemes, which are based upon a combination of the H tracking theory, fast switching control algorithm and switching law design, are developed such that the observer-based H model reference tracking performance is guaranteed. Sufficient conditions for the solvability of the tracking control problem are given for the case in which the state of system is not available. Since convex combination techniques are used to derive the delay independent criteria, some subsystems are allowed to be unstable. Finally, various comparisons of the elaborated examples are performed to demonstrate the effectiveness of the proposed control design approach.