期刊
INTERNATIONAL JOURNAL OF ROBUST AND NONLINEAR CONTROL
卷 19, 期 4, 页码 377-393出版社
WILEY
DOI: 10.1002/rnc.1314
关键词
delay-distribution-dependent stability; probability distribution; Lyapunov functional; random time-varying delay
资金
- National Natural Science Foundation of China High Technology Project of Jiangsu Province [60774060, 60704024, BG2006042]
By employing the information of the probability distribution of the time delay, this paper investigates the problem of robust stability for uncertain systems with time-varying delay satisfying some probabilistic properties. Different from the common assumptions on the time delay in the existing literatures, it is assumed in this paper that the delay is random and its probability distribution is known a priori. In terms of the probability distribution of the delay, a new type of system model with stochastic parameter matrices is proposed. Based on the new system model, sufficient conditions for the exponential mean square stability of the original system are derived by using the Lyapunov functional method and the linear matrix inequality (LMI) technique. The derived criteria, which ire expressed in terms of a set of LMIs, are delay-distribution-dependent, that is, the solvability of the criteria depends on not only the variation range of the delay but also the probability distribution of it. Finally, three numerical examples are given to illustrate the feasibility and effectiveness of the proposed method. Copyright (C) 2008 John Wiley & Soils, Ltd.
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