Robust Sliding Mode Observer Fault Diagnosis and its Application to Nonlinear Systems

被引：0

作者：

Hao Jin-Feng ^{[1
]}

Kang Jian-She ^{[1
]}

Shi Xian-Ming ^{[1
]}

Rong Li-Qing ^{[1
]}

机构：

[1] Mech Engn Coll, Dept 6, Shijiazhuang, Peoples R China

来源：

2012 INTERNATIONAL CONFERENCE ON INDUSTRIAL CONTROL AND ELECTRONICS ENGINEERING (ICICEE) | 2012年

关键词：

Robust; Sliding mode observer; Fault diagnosis; Nonlinear system; ACTUATOR;

D O I：

10.1109/ICICEE.2012.549

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Robust state estimation and fault diagnosis are challenging problems in the research into nonlinear systems. In this paper a sliding mode observer is proposed for a class of nonlinear systems with unknown inputs and faults. Model uncertainties, disturbances and faults are represented as structured unknown inputs. We analyzed the robustness of sliding model control system and put forward a fault diagnosis method using sliding mode observer for fault diagnosis of uncertain control system. Robustness to model uncertainties and disturbances can be guaranteed for the sliding mode observer by disturbance decoupling. The method can supply a stable estimation of the state response of uncertain control system under normal disturbance, and furthermore realize the diagnosis for fault disturbance. The results proved the feasibility of the method.

引用

页码：1450 / 1453

页数：4