Journal of South China University of Technology (Natural Science Edition) ›› 2007, Vol. 35 ›› Issue (1): 7-12.

• Electronics, Communication & Automation Technology • Previous Articles     Next Articles

Bounded Adaptive Stabilization for a Class ofLarge-Scale Stochastic System

Wu Sai   Deng Fei-qi   

  1. School of Automation Science and Engineering , South China Univ. of Tech. , Guangzhou 510640 , Guangdong , China
  • Received:2005-11-28 Online:2007-01-25 Published:2007-01-25
  • Contact: 武赛(1977-) ，女，博士生，主要从事非线性随机大系统控制和自适应控制方面的研究。 E-mail:ninnie@21cn.com
  • About author:武赛(1977-) ，女，博士生，主要从事非线性随机大系统控制和自适应控制方面的研究。
  • Supported by:

    国家自然科学基金资助项目( 60374023) ;广东省自然科学基金资助项目(011629)

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Abstract:

The stabilization problem of a class of large-scale stochastic nonlinear system with bounded uncertaintiesin strict-feedback form is investigated. By fully considering the effects of interconnections among all subsystems , astate observer for such a kind of combined system is designed. Then , a decentralized adaptive output feedback controlleris designed by means of the backstepping approach and by constructing quartic stochastic control Lyapunovfunctions. So , the closed-loop , interconnected and large-scale stochastic nonlinear system is boundedly stable inprobability. Simulated results verify the effectiveness of the proposed control algorithm.

Key words: large-scale stochastic nonlinear system, adaptive control, decentralized control, bounded stabilization