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

fYear

1992

fDate

1992

Firstpage

557

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Decision and Control, 1992., Proceedings of the 31st IEEE Conference on

Conference_Location

Tucson, AZ

Print_ISBN

0-7803-0872-7

Type

conf

DOI

10.1109/CDC.1992.371672

Filename

371672