Title :
Estimation and reconstruction of multiple system, actuator and sensor faults in time-delayed linear systems
Author :
Ahmadi, Ali Akbar ; Salmasi, Farzad R.
Author_Institution :
Sch. of Electr. & Comput. Eng., Univ. of Tehran, Tehran, Iran
Abstract :
Detection, isolation, and reconstruction of multiple system, actuator, and sensor faults in time-delayed linear systems are considered in this note. Based on an appropriate change of system coordinates; all system, actuator, and sensor faults are assigned to different subsystems of a time-delayed linear system. Then, using sliding mode observers and equivalent output error injection approaches, all faults are reconstructed separately. This results in reduced computational complexity. Finally, numerical simulation is used to show the feasibility and effectiveness of the proposed approach.
Keywords :
actuators; delays; estimation theory; fault diagnosis; linear systems; sensors; variable structure systems; actuator fault; computational complexity; equivalent output error injection approach; multiple system estimation; multiple system reconstruction; sensor fault; sliding mode observer; system coordinate; time-delayed linear system; Actuators; Delay effects; Linear systems; Numerical simulation; Observers; fault estimation; multiple faults; sliding mode observers;
Conference_Titel :
Control and Automation (ICCA), 2011 9th IEEE International Conference on
Conference_Location :
Santiago
Print_ISBN :
978-1-4577-1475-7
DOI :
10.1109/ICCA.2011.6138017
