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论文类型：期刊论文

发表时间：2008-11-01

发表刊物：IEEE TRANSACTIONS ON AUTOMATIC CONTROL

收录刊物：SCIE、EI、Scopus

卷号：53

期号：10

页面范围：2391-2396

ISSN号：0018-9286

关键字：Controller failure; controller failure frequency; exponential stability; switched delay systems

摘要：This paper studies the stability for a class of systems with time-varying delay subject to controller failure. It explores under what conditions of controller failure the system is still exponentially stable. The concept of controller failure frequency is introduced. First, the delay system with failed controller is modelled as a class of switched delay systems. Next, based on two lemmas developed in this paper and the piecewise Lyapunov functional method, sufficient conditions are provided to guarantee the exponential stability of the system when controller failure occurs, which is in terms of the solvability of a set of linear matrix inequalities (LMIs). Finally, an example of a networked control system is given to illustrate the effectiveness of the proposed method.