Title :
Decentralized robust servomechanism problem for large flexible space structures under sensor and actuator failures
Author :
Huang, Samuel T C ; Davison, Edward J. ; Kwong, Raymond H S
Author_Institution :
Edward S. Rogers Sr. Dept. of Electr. & Comput. Eng., Univ. of Toronto, Toronto, ON, Canada
Abstract :
The decentralized robust servomechanism problem (DRSP) for large flexible space structures (LFSS) under sensor and actuator failures is considered. Failure conditions are modelled by failure matrices. This permits a unified treatment of sensor and actuator failures. For colocated LFSS, stabilization, tracking of constant set points, and regulating constant disturbances can be simultaneously handled using a decentralized tuning PID output-feedback controller. Necessary and sufficient conditions for solvability of the DRSP for colocated LFSS under sensor and actuator failures are derived. Two detailed examples demonstrate the effectiveness of the controller.
Keywords :
actuators; decentralised control; feedback; flexible structures; robust control; sensors; servomechanisms; three-term control; time-varying systems; actuator failures; decentralized robust servomechanism problem; decentralized tuning PID output-feedback controller; failure matrices; large flexible space structures; sensor failures; Actuators; Communication system control; Control design; Control systems; Fault tolerance; Robust control; Robustness; Servomechanisms; Stability; Three-term control;
Conference_Titel :
Decision and Control, 2008. CDC 2008. 47th IEEE Conference on
Conference_Location :
Cancun
Print_ISBN :
978-1-4244-3123-6
Electronic_ISBN :
0191-2216
DOI :
10.1109/CDC.2008.4739388
