A New Fuzzy Lyapunov Function for Relaxed Stability Condition of Continuous-Time Takagi-Sugeno Fuzzy Systems

被引:94
作者
Lee, Dong Hwan [1 ]
Park, Jin Bae [1 ]
Joo, Young Hoon [2 ]
机构
[1] Yonsei Univ, Dept Elect Engn, Seoul 120749, South Korea
[2] Kunsan Natl Univ, Dept Control & Robot Engn, Kunsan 573701, Chongbuk, South Korea
关键词
Continuous-time Takagi-Sugeno (T-S) fuzzy systems; fuzzy Lyapunov functions (FLFs); linear matrix inequality (LMI); nonlinear systems; stability; NONQUADRATIC STABILIZATION CONDITIONS; QUADRATIC STABILITY; NONLINEAR-SYSTEMS; MODELS; DESIGN; PERFORMANCE; FORM;
D O I
10.1109/TFUZZ.2011.2142315
中图分类号
TP18 [人工智能理论];
学科分类号
081104 ; 0812 ; 0835 ; 1405 ;
摘要
This paper presents a new fuzzy Lyapunov function (FLF) for the stability analysis of continuous-time Takagi-Sugeno (T-S) fuzzy systems. Unlike conventional FLFs, the proposed one depends not only on the fuzzy weighting functions of the T-S fuzzy systems but on their first-order time derivatives as well. Based on the proposed FLF, a sufficient stability condition is derived in the form of linear matrix inequalities, depending on the upper bounds on the second-order time derivative of the fuzzy weighting functions, as well as the first-order ones. Finally, some examples demonstrate that the proposed condition can provide less conservative results than the previous ones in the literature.
引用
收藏
页码:785 / 791
页数:8
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