Title :
Investigation of robust model-following using a two-layered compensation scheme
Author :
Lam, Quang M. ; Hill, Joe P.
Author_Institution :
Coleman Research Corp., Fairfax, VA, USA
Abstract :
A two-layered compensation scheme is developed to enhance the performance of a flight control system (FCS). The traditional explicit model-following controller designed via linear quadratic optimization is the first layer of compensation providing basic stabilization for the aircraft, while the direct adaptive controller is cascaded in the output channel or actuating path (instead of state element) to provide the overall FCS with a new level of performance. The scheme is attractive because it increases the robustness of the overall FCS and possesses a practical implementation scheme. The performance of the two-layered compensation scheme is evaluated using an F-4 aircraft model. System uncertainties arising from plant dynamics variations, disturbances, and measurement noise are used to test the performance of the two-layered compensation control law
Keywords :
adaptive control; aircraft control; compensation; optimal control; F-4 aircraft model; actuating path; direct adaptive controller; explicit model-following controller; flight control system; linear quadratic optimization; measurement noise; output channel; plant dynamics variations; robust model-following; two-layered compensation scheme; Adaptive control; Aerospace control; Aircraft; Control systems; Control theory; Design optimization; Feedback; Noise measurement; Noise robustness; Nonlinear control systems; Optimal control; Programmable control; Robustness; System testing;
Conference_Titel :
Decision and Control, 1992., Proceedings of the 31st IEEE Conference on
Conference_Location :
Tucson, AZ
Print_ISBN :
0-7803-0872-7
DOI :
10.1109/CDC.1992.371672
