Title :
Reliable tracking control system design against actuator failures
Author :
Zhao, Qing ; Jiang, Jin
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Western Ontario, London, Ont., Canada
Abstract :
A method is presented to synthesize a reliable controller for dynamic systems possessing actuator redundancies. The designed controller will be able to guarantee the dynamic stability and to maintain the steady-state tracking performance of the closed-loop system in the event of actuator failures. The method is based on robust pole region assignment techniques with the help of a pre-compensator to modify the dynamic characteristics of the redundant actuator control channels. The tracking capability is obtained by an outer PI control loop. The effectiveness of this method has been verified on an aircraft bank angle control system design. The results indicate that the proposed scheme is indeed very effective in achieving the closed-loop system integrity in the presence of actuator failures
Keywords :
actuators; aircraft control; control system synthesis; pole assignment; redundancy; reliability; robust control; two-term control; actuator failures; actuator redundancies; aircraft bank angle control system; dynamic stability; dynamic systems; outer PI control loop; pre-compensator; reliable tracking control system; robust pole region assignment techniques; steady-state tracking performance; system integrity; tracking capability; Actuators; Control system synthesis; Control systems; Maintenance; Pi control; Redundancy; Robust control; Stability; Steady-state; Tracking loops;
Conference_Titel :
SICE '97. Proceedings of the 36th SICE Annual Conference. International Session Papers
Conference_Location :
Tokushima
DOI :
10.1109/SICE.1997.624902
