Fault diagnosis of nonlinear system based on generalized observer

被引：16
|
作者：
Fang, Ming [1 ]
Tian, Yantao [1 ]
Guo, Li [1 ]
机构：
[1] Jilin Univ, Coll Commun Engn, Changchun 130025, Peoples R China
来源：
APPLIED MATHEMATICS AND COMPUTATION | 2007年 / 185卷 / 02期
关键词：
fault diagnosis; nonlinear system; generalized observer;
D O I：
10.1016/j.amc.2006.07.034
中图分类号：
O29 [应用数学];
学科分类号：
070104 ;
摘要：
The fault model of the nonlinear system and the generalized nonlinear observer are presented in this paper. The algorithm compensates the influence of faults on the remnant order by means of adjusting the gain matrix of the observer to track the fault parameters of the system on line. It is proved that the nonlinear observer can realize fault diagnosis. In fact, here the problem of fault diagnosis is converted to the problem of model matching. The fault estimation can be exactly and timely. At last, experiments of three-tank system illustrate the effectiveness of the proposed algorithm. (c) 2006 Elsevier Inc. All rights reserved.
引用
收藏
页码：1131 / 1137
页数：7
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