广东工业大学学报 ›› 2010, Vol. 27 ›› Issue (3): 22-26.

• 综合研究 • 上一篇    下一篇

离散T-S模糊控制系统的稳定性研究

  

  1. 广东工业大学应用数学学院,广东广州510006
  • 出版日期:2010-09-25 发布日期:2010-09-25
  • 作者简介:刘俊(1984-),男,硕士研究生,主要研究方向为模糊控制

Stability Analysis of Discrete T-S Fuzzy Control Systems

  1. Faculty of Applied Mathematics,Guangdong University ofTechnology,Guangzhou 51006,China
  • Online:2010-09-25 Published:2010-09-25

摘要: 在分段模糊Lyapunov函数的基础上研究了输入采用双交叠模糊分化的模糊控制系统的性质,并提出了最大交叠域的概念.在此基础上提出了一个新的判定T-S模糊系统稳定性的充分条件,该条件就是在最大交叠域中分别寻找公共的正定矩阵,减少了以往稳定性判定方法的保守性和难度.具体实例说明了本条件的有效性和优越性.

关键词: 离散T-S模糊系统;分段模糊Lyapnuov函数;模糊分化;稳定性

Abstract: Based on piecewise fuzzy Lyapunov function,the properties of fuzzy control systems employing two-over.lapped fuzzy partition inputs are studied,and the notation of maximal overlapped—rule area is also proposed.These new suficient conditions to check the stability of a T-S fuzzy control system are proposed.The conditions require finding a common positive-definite matrix in each maximal overlapped-rule area,which can reduce the conservation and dificulty of former stability analysis approaches.Finally,an example is given to show the approach is effective and advantageous.

Key words: discrete-time T-S fuzzy system;piecewise fuzzy Lyapunov function;fuzzy partition;stability

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