DocumentCode :
1268894
Title :
Active fault-tolerant control system against partial actuator failures
Author :
Zhang, Y.M. ; Jiang, J.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Western Ontario, London, Ont., Canada
Volume :
149
Issue :
1
fYear :
2002
fDate :
1/1/2002 12:00:00 AM
Firstpage :
95
Lastpage :
104
Abstract :
A novel approach for integrated fault detection, diagnosis and reconfigurable control systems design against actuator faults is proposed. The scheme is based on a two-stage adaptive Kalman filter for simultaneous state and fault parameter estimation, statistical decisions for fault detection, and activation of controller reconfiguration. Using the information from the fault detection and diagnosis scheme, the reconfigurable feedback controller is designed automatically based on an eigenstructure assignment technique. To eliminate the steady-state tracking error, a reconfigurable feedforward controller is also incorporated using a command generator tracker technique. The following fault types and input signals are considered: abrupt and incipient, single, multiple and consecutive faults, constant and arbitrarily varying reference inputs. The effectiveness and the superiority of the proposed approach are demonstrated using an aircraft example
Keywords :
Kalman filters; control system synthesis; fault tolerance; parameter estimation; eigenstructure assignment; fault-tolerant control system; integrated fault detection; parameter estimation; partial actuator failures; reconfigurable control systems; reconfigurable feedback controller; reconfigurable feedforward controller;
fLanguage :
English
Journal_Title :
Control Theory and Applications, IEE Proceedings -
Publisher :
iet
ISSN :
1350-2379
Type :
jour
DOI :
10.1049/ip-cta:20020110
Filename :
993587
Link To Document :
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