An adaptive actuator failure compensation controller using output feedback

Author

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

Author_Institution

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

Volume

4

fYear

2001

fDate

2001

Firstpage

3085

Abstract

An adaptive control scheme using output feedback for output tracking is developed for systems with unknown actuator failures that some unknown inputs are stuck at some unknown fixed values at unknown time instants. An effective controller structure is proposed which achieves desired plant-model output matching when implemented with matching parameters and asymptotic output tracking when implemented with adaptive parameter estimates. A completely parametrized linear error equation is obtained based on which a stable adaptive law is derived for parameter adaptation in the presence of parameter uncertainties. All dosed-loop signals are bounded and the plant output tracks a given reference output asymptotically, despite the uncertainties in actuator failures and plant parameters, as shown analytically and by simulation results from a case study of yaw rate control of Boeing 747 lateral dynamics

Keywords

adaptive control; closed loop systems; feedback; stability; state feedback; Boeing 747 lateral dynamics; adaptive actuator failure compensation controller; adaptive control scheme; closed-loop signals; output feedback; output tracking; parameter adaptation; parameter uncertainties; parametrized linear error equation; plant-model output matching; yaw rate control; Actuators; Adaptive control; Equations; Failure analysis; Impedance matching; Output feedback; Parameter estimation; Programmable control; Uncertain systems; Uncertainty;

fLanguage

English

Publisher

ieee

Conference_Titel

American Control Conference, 2001. Proceedings of the 2001

Conference_Location

Arlington, VA

ISSN

0743-1619

Print_ISBN

0-7803-6495-3

Type

conf

DOI

10.1109/ACC.2001.946391

Filename

946391