Title :
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
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;
Conference_Titel :
American Control Conference, 2003. Proceedings of the 2003
Print_ISBN :
0-7803-7896-2
DOI :
10.1109/ACC.2003.1240445
