Fault Diagnosis with Disturbance Rejection Performance Based on Disturbance Observer

被引：20

作者：

Cao, Songyin ^{[1
]}

Guo, Lei ^{[1
]}

机构：

[1] Southeast Univ, Res Inst Automat, Nanjing 210096, Jiangsu, Peoples R China

来源：

PROCEEDINGS OF THE 48TH IEEE CONFERENCE ON DECISION AND CONTROL, 2009 HELD JOINTLY WITH THE 2009 28TH CHINESE CONTROL CONFERENCE (CDC/CCC 2009) | 2009年

关键词：

STOCHASTIC-SYSTEMS;

D O I：

10.1109/CDC.2009.5400655

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

080201 [机械制造及其自动化];

摘要：

In this paper, a new fault diagnosis approach is presented for a class of non-linear systems with external disturbances. The unknown disturbances are supposed to be generated by an exogenous system, where some classical assumptions on disturbances can be removed. It is shown that it will be difficult to diagnose the fault if disturbances and faults exist simultaneously in the system. To overcome this obstacle, a new composite observer is constructed by combining a fault diagnosis observer with a disturbance observer, with which the fault can be estimated and the disturbances can be rejected at the same time. Finally, simulation is given to show the efficiency of the proposed approach.

引用

页码：6947 / 6951

页数：5

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