Robust fault estimation for uncertain switched linear systems with time-varying delay

被引：3
|
作者：
Zhong Yan-ke [1 ,2 ]
Chen Te-fang [1 ]
Chen Chun-yang [1 ]
机构：
[1] Cent S Univ, Sch Informat Sci & Engn, Changsha 410075, Hunan, Peoples R China
[2] East China Jiaotong Univ, Sch Elect & Elect Engn, Nanchang 310013, Peoples R China
来源：
JOURNAL OF CENTRAL SOUTH UNIVERSITY | 2015年 / 22卷 / 11期
基金：
中国国家自然科学基金;
关键词：
fault estimation; switched linear system; time-varying delay; model uncertainty; average dwell-time; ACCOMMODATION; STABILIZATION;
D O I：
10.1007/s11771-015-2974-z
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The problem of fault estimation is investigated for a class of uncertain switched systems with time-varying delay. A robust observer-based fault estimator is designed such that the augment error system is exponentially stable and the H (a) performance index meets the predefined requirements. Based on the multiple Lyapunov-Krasovskii functions and the average dwell-time method, the delay dependent sufficient conditions on the existence of desired fault estimator are established. However, since these conditions are not linear matrix inequalities (LMIS), they can not be solved by MATLAB. By using a novel method, these conditions are presented in terms of LMIS. Finally, a numerical example is carried out. The designed fault estimator could tract the fault signal timely. Besides, the error between estimation and fault is very small. Therefore, the validity of the obtained results is illustrated.
引用
收藏
页码：4254 / 4262
页数：9
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