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		Zhaojing WU,Yonghui LIU.[en_title][J].Control Theory and Technology,2012,10(3):344~348.[Copy]

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ZhaojingWU,YonghuiLIU
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(Institute of Automation, Qufu Normal University; School of Mathematics and Information Science, Yantai University)

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Received:March 28, 2010Revised:March 28, 2011

基金项目:This work was supported by the National Natural Science Foundations of China (Nos. 60974028, 10971256), the China Postdoctoral Science Foundation (No. 200904501289), the Shandong Postdoctoral Science Foundation (No. 200903042), the Specialized Research Fund for the Doctoral Program of Higher Education (No. 20103705110002), the Shandong Provincial Natural Science Foundation (Nos. ZR2009GM008, ZR2009AL014), and the Natural Science Foundation of Jiangsu Province (No. BK2009083).

Robust output-feedback control for stochastic nonlinear systems with modeling errors

Zhaojing WU,Yonghui LIU

(Institute of Automation, Qufu Normal University; School of Mathematics and Information Science, Yantai University)

Abstract:

In this paper, the stabilization problem of a stochastic nonlinear system with modeling errors is considered. An augmented observer is first presented to counteract the unmeasurable states as well as modeling errors. An adaptive output feedback controller is designed such that all signals in the closed-loop system are bounded in probability and the output is regulated to the origin almost surely.

Key words: Stochastic systems Nonlinear control Modeling error Backstepping