Robust mixed H2/H∞ filtering for discrete-time delay fuzzy systems

被引:19
|
作者
Lin, YC [1 ]
Lo, JC [1 ]
机构
[1] Natl Cent Univ, Dept Mech Engn, Chungli 320, Taiwan
关键词
mixed H-2/H-infinity filtering; time delays; Takagi-Sugeno fuzzy model (T-S fuzzy model); worst-case disturbance; linear matrix inequality (LMI);
D O I
10.1080/00207720500404797
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
A robust mixed H-2/H-infinity filtering problem for discrete-time fuzzy systems subject to parameter uncertainties and multiple time-varying delays in state variables is addressed in this paper. The uncertain systems are expressed as Takagi-Sugeno fuzzy models with linear nominal parts and norm-bounded uncertainties. The main objective is to design a stable filter which minimizes a guaranteed cost index and achieves a prescribed H-infinity performance under worst-case disturbance. Based on Lyapunov theory, sufficient conditions guaranteeing stability and achieving prescribed performances are stated in terms of LMIs. Therefore, stable filters are obtained with existing convex algorithms. Lastly, two examples are given to illustrate the proposed design methodology.
引用
收藏
页码:993 / 1006
页数:14
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