Title :
Actuator and sensor fault reconstruction for a class of uncertain linear systems
Author :
Junqi, Yang ; Fanglai, Zhu ; Xin, Wang
Author_Institution :
College of Electrical Engineering and Automation, Henan Polytechnic University, Jiaozuo 454000, P.R. China
Abstract :
This paper considers the simultaneous actuator and sensor fault reconstruction problems for linear systems when the observer matching condition is not satisfied. A new augmented system is constructed and an auxiliary output vector is proposed so that the observer matching condition is satisfied. A high-order sliding mode observer is considered to obtain the exact estimates of both the auxiliary outputs and their derivatives. A kind of actuator and sensor fault reconstruction method is developed based on a reduced-order observer and the high-order sliding mode observer. Finally, a numerical simulation is given to illustrate the effectiveness of the proposed methods.
Keywords :
Actuators; Mathematical model; Observers; Reconstruction algorithms; Symmetric matrices; Auxiliary output; Fault reconstruction; Observer-based FDI;
Conference_Titel :
Control Conference (CCC), 2015 34th Chinese
Conference_Location :
Hangzhou, China
DOI :
10.1109/ChiCC.2015.7260608