华南理工大学学报(自然科学版) ›› 2005, Vol. 33 ›› Issue (5): 15-18.

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线性随机分布参数系统均方稳定的充要条件

宋亚男1 邓飞其2 罗琦3 杨宜民1   

  1. 1.广东工业大学 自动化学院,广东 广州 510090;2.华南理工大学 自动化科学与工程学院,广东 广州 510640;3.武汉科技大学 理学院,湖北 武汉 430081
  • 收稿日期:2003-10-13 出版日期:2005-05-25 发布日期:2005-05-25
  • 通信作者: 宋亚男(1976-),女,讲师,博士,主要从事复杂大系统的优化和控制研究 E-mail:syn01@ 126.com
  • 作者简介:宋亚男(1976-),女,讲师,博士,主要从事复杂大系统的优化和控制研究
  • 基金资助:

    国家自然科学基金资助项目(69874015,69934030);广东省自然科学基金资助项目(011629)

Necessary and Sufi cient Condition for Mean-Square Stability of Linear Stochastic System with Distributed Parameter

Song Ya-nan1  Deng Fei-qi2  Luo Qi3  Yang Yi-min1   

  1. 1.College of Automation,Guangdong Univ.of Tech.,Guangzhou 510090,Guangdong,China;2.College of Automation Science and Engineering,South China Univ.of Tech.,Guan gzhou 510640,Guan gdong,China;3.College of Science,Wuhan Univ.of Science and Tech.,Wuhan 430081,Hubei,China
  • Received:2003-10-13 Online:2005-05-25 Published:2005-05-25
  • Contact: Song Ya-nan(born in 1976),female,lecturer,Ph. D.,mainly researches on optimization an d control of complex large-scale systems. E-mail:syn01@ 126.com
  • About author:Song Ya-nan(born in 1976),female,lecturer,Ph. D.,mainly researches on optimization an d control of complex large-scale systems.
  • Supported by:

    Supported by the National Natural Sc ience Foundation of China(69874015,69934030)and Guangdong Provincial Natural Science Foundation(011629)

摘要: 基于线性随机分布参数系统新的数学描述形式,给出了相应的均方稳定定义.考虑边界条件及散度定理,将偏微分方程转化成常微分方程,基于常微分方程的稳定性条件给出了相应偏微分方程的稳定性条件,从而得到了该类线性随机分布参数系统均方稳定的充要条件.最后通过仿真实例证明了结果的正确性.

关键词: 随机系统, 分布参数, 均方稳定, ItÔ公式

Abstract:

On the basis of the new mathematical description of the linear stochastic system with distributed pa-rameter,the corresponding definition of mean-square stability is given.Moreover,by transferring partial dife-rential equ ations into ordinary diferential equations an d considering the boundary condition an d Divergence Theolea-the conditions for the stab ility of partial diferential equ ations aTe presented,which aTe based on the stable
conditions of ordinary diferential equ ations.Thus,the necessary an d suficient condition for the mean.square stability of the linear stochastic system with distributed parameter is obtaindd.Simulations are finally presented to verify the correctness of this research.

Key words: stochastic system, distributed parameter, mean-square stability, ItÔ, formula