文献类型：期刊文献

英文题名：Robust observer design for Ito stochastic time-delay systems via sliding mode control

作者：Niu, Yugang; Ho, Daniel W. C.

机构：[1]E China Univ Sci & Technol, Sch Informat Sci & Engn, Shanghai 200237, Peoples R China;[2]City Univ Hong Kong, Dept Math, Kowloon, Hong Kong, Peoples R China

年份：2006

卷号：55

期号：10

起止页码：781

外文期刊名：SYSTEMS & CONTROL LETTERS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000239681000001)】；

语种：英文

外文关键词：stochastic systems; unmeasured state; observer; sliding mode control; time-delay

摘要：This paper deals with the output feedback sliding mode control for Ito stochastic time-delay systems. The system states are unmeasured, and the uncertainties are unmatched. A sliding mode control scheme is proposed based on the state estimates. By utilizing a novel switching function, the derivative of the switching function is ensured to be finite variation. It is shown that the sliding mode in the estimation space can be attained in finite time. The sufficient condition for the asymptotic stability (in probability) of the overall closed-loop stochastic system is derived. Finally, a simulation example is shown to illustrate the proposed method. (C) 2006 Elsevier B.V. All rights reserved.