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

fYear

2008

fDate

9-11 Dec. 2008

Firstpage

410

Lastpage

416

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Decision and Control, 2008. CDC 2008. 47th IEEE Conference on

Conference_Location

Cancun

ISSN

0191-2216

Print_ISBN

978-1-4244-3123-6

Electronic_ISBN

0191-2216

Type

conf

DOI

10.1109/CDC.2008.4739388

Filename

4739388