Sliding mode observer-based multi-fault reconstruction of nonlinear system

Author

Changfan Zhang ; Houguang Chu ; Jing He ; Lin Jia ; Miaoying Zhang

Author_Institution

Coll. of Electr. & Inf. Eng., Hunan Univ. of Technol., Zhuzhou, China

fYear

2015

fDate

23-25 May 2015

Firstpage

3891

Lastpage

3896

Abstract

For a class of nonlinear system with multi-dimensional actuator faults and multi-dimensional unknown input disturbances, the twice-linear coordinate transformation is made and the sliding mode observer is designed to obtain two dynamic deviation equations. One equation only deals with the faults and the other deals with both the faults and the disturbances. By means of the principle of equivalence of sliding mode observer and sliding mode variable structure, both the actuator faults and the unknown input disturbances can be reconstructed. The effectiveness of such method can be verified by the simulation example.

Keywords

fault diagnosis; multidimensional systems; nonlinear control systems; observers; variable structure systems; dynamic deviation equation; multidimensional actuator fault; multidimensional unknown input disturbance; nonlinear system; sliding mode observer design; sliding mode observer-based multifault reconstruction; sliding mode variable structure; twice-linear coordinate transformation; Actuators; Fault diagnosis; Mathematical model; Nonlinear systems; Observers; Robots; coordinate transformation; fault reconstruction; robust fault diagnosis; sliding mode observer;

fLanguage

English

Publisher

ieee

Conference_Titel

Control and Decision Conference (CCDC), 2015 27th Chinese

Conference_Location

Qingdao

Print_ISBN

978-1-4799-7016-2

Type

conf

DOI

10.1109/CCDC.2015.7162603

Filename

7162603