Direct adaptive control for aircraft control surface failures

Author

Belkharraz, Abderrazak I. ; Sobel, Kenneth

Author_Institution

Dept. of Electr. Eng., City Coll. of New York, NY, USA

Volume

5

fYear

2003

fDate

4-6 June 2003

Firstpage

3905

Abstract

A direct model reference adaptive controller for multi-input multi-output plants is analyzed. We augment the plant with feedforward dynamics such that the inverse feedforward stabilizes the plant over the set of allowable failures. We prove that the augmented output error is asymptotically vanishing for a loss of control effectiveness failure. A novel state space approach for computing the feedforward dynamics is proposed. We demonstrate the use of our algorithm by application to a three input model of the linearized lateral dynamics of the F/A-18 aircraft. Simulation results are presented which show that the adaptive controller exhibits improved model following as compared to a fixed gain eigenstructure assignment controller.

Keywords

MIMO systems; aircraft control; eigenstructure assignment; feedforward; linearisation techniques; model reference adaptive control systems; state-space methods; F/A-18 aircraft; adaptive controller; aircraft control; augmented output error; direct adaptive control; eigenstructure assignment controller; feedforward dynamics; inverse feedforward; linearized lateral dynamics; multiinput multioutput plants; state space approach; surface failures; Adaptive control; Aerospace control; Aircraft; Computational modeling; Control systems; Error correction; Fault tolerant systems; Programmable control; Stability; State-space methods;

fLanguage

English

Publisher

ieee

Conference_Titel

American Control Conference, 2003. Proceedings of the 2003

ISSN

0743-1619

Print_ISBN

0-7803-7896-2

Type

conf

DOI

10.1109/ACC.2003.1240445

Filename

1240445