Title :
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
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;
Conference_Titel :
Control and Decision Conference (CCDC), 2015 27th Chinese
Conference_Location :
Qingdao
Print_ISBN :
978-1-4799-7016-2
DOI :
10.1109/CCDC.2015.7162603
