Multi-objective H-/H∞ fault detection observer design for Takagi-Sugeno fuzzy systems with unmeasurable premise variables: descriptor approach
Multi-objective H-/H∞ fault detection observer design for Takagi-Sugeno fuzzy systems with unmeasurable premise variables: descriptor approach
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DOI：
10.1002/acs.2374
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发表时间：
2013-12-01
影响因子：
3.1
通讯作者：
Khadir, M. Tarek
中科院分区：
文献类型：
--
作者：
Aouaouda, S.;Chadli, M.;Khadir, M. Tarek
研究了具有不可测前提变量的非线性Takagi-Sugeno模型在传感器故障和未知有界干扰下的鲁棒故障检测观测器设计问题。其主要思想是通过混合H/H性能指标来综合一个鲁棒故障检测观测器。所考虑的观测器用于联合估计状态和故障。利用广义系统表示技术，将传感器故障作为辅助状态变量，提出了一种新的基于线性矩阵不等式(LMI)的非保守性方法。该问题的解是通过迭代LMI过程得到的。版权所有(C)2012 John Wiley&Sons，Ltd.
This paper investigates the problem of robust fault detection observer design for nonlinear Takagi-Sugeno models with unmeasurable premise variables subject to sensor faults and unknown bounded disturbance. The main idea is to synthesize a robust fault detection observer by means of a mixed H-/H performance index. The considered observer is used to estimate jointly states and faults. Using the technique of descriptor system representation, we proposed a new less-conservative approach in term of a linear matrix inequality (LMI) by considering the sensor fault as an auxiliary state variable. A solution of the problem is obtained by using an iterative LMI procedure. Copyright (c) 2012 John Wiley & Sons, Ltd.