Adaptive output feedback actuator failure compensation for a class of state-dependent nonlinear systems

Author

Tang, Xidong ; Tao, Gang ; Joshi, Suresh M.

Author_Institution

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

Volume

2

fYear

2003

fDate

9-12 Dec. 2003

Firstpage

1681

Abstract

This paper develops an adaptive output feedback control scheme for a class of nonlinear systems with state-dependent nonlinearities in the presence of unknown actuator failures. A robust backstepping feedback control law is derived to effectively handle the state estimation error due to such uncertain nonlinearities. An adaptive actuator failure compensation scheme is designed to ensure closed-loop signal boundedness and desired output tracking performance. An application to controlling the angle of attack of a nonlinear aircraft model in the presence of elevator segment failures is studied and simulation results are presented to illustrate the effectiveness of the adaptive actuator failure compensation design.

Keywords

actuators; adaptive control; aircraft control; closed loop systems; control nonlinearities; control system synthesis; failure analysis; feedback; nonlinear control systems; robust control; state estimation; adaptive output feedback actuator failure compensation; adaptive output feedback control; closed-loop signal boundedness; elevator segment failures; nonlinear aircraft model; output tracking performance; robust backstepping feedback control law; state estimation error; state-dependent nonlinear systems; state-dependent nonlinearities; Actuators; Adaptive control; Backstepping; Control nonlinearities; Control systems; Nonlinear control systems; Nonlinear systems; Output feedback; Programmable control; Robust control;

fLanguage

English

Publisher

ieee

Conference_Titel

Decision and Control, 2003. Proceedings. 42nd IEEE Conference on

ISSN

0191-2216

Print_ISBN

0-7803-7924-1

Type

conf

DOI

10.1109/CDC.2003.1272854

Filename

1272854