On matching conditions for adaptive state tracking control of systems with actuator failures

Author

Chen, Shuhao ; Tao, Gang ; Joshi, Suresh M.

Author_Institution

Dept. of Electr. & Comput. Eng., Virginia Univ., Charlottesville, VA, USA

Volume

2

fYear

2001

fDate

2001

Firstpage

1479

Abstract

New necessary and sufficient conditions are derived for state tracking with state feedback for linear time-invariant systems with actuator failures. The actuator failures are characterized by unknown input signals stuck at some unknown fixed values at unknown time instants. It is shown that the number of non-failed actuators is crucial in determining the actuation range which specifies the compensation design conditions. Such conditions are required for both a nominal design using system knowledge and an adaptive design without system knowledge. An adaptive actuator failure compensation control scheme based on relaxed system actuation conditions is developed for systems with unknown parameters and unknown actuator failure values, times and patterns. Simulation results are presented to verify the desired system performance with failure compensation

Keywords

adaptive control; closed loop systems; compensation; fault tolerance; linear systems; state feedback; tracking; actuator failures; adaptive control; closed-loop system; compensation; linear time invariant systems; plant-model matching; state feedback; state tracking; Adaptive control; Adaptive systems; Control systems; Hydraulic actuators; NASA; Postal services; Programmable control; State feedback; Sufficient conditions; Vectors;

fLanguage

English

Publisher

ieee

Conference_Titel

Decision and Control, 2001. Proceedings of the 40th IEEE Conference on

Conference_Location

Orlando, FL

Print_ISBN

0-7803-7061-9

Type

conf

DOI

10.1109/.2001.981103

Filename

981103