Title :
Robust discrete controller design for an unmanned research vehicle (URV) using discrete quantitative feedback theory
Author :
Wheaton, D.G. ; Horowitz, I.M. ; Houpis, C.H.
Author_Institution :
Air Force Inst. of Technol., Wright-Patterson AFB, Dayton, OH, USA
Abstract :
The application of non-minimum phase ω´-plane discrete MIMO (multiple-input-multiple-output) quantitative feedback theory (QFT) to the design of a three-axis rate-commanded automatic flight control system for a URV is presented. The URV model used is a seven-input three-output state-space system derived from the small-angle perturbation equations of motion. The controllers and prefilters designed provide a three-axis noninteracting rate-commanded automatic flight control law implementation on the Lambda URV. Hybrid nonlinear simulations verify the successful application of discrete QFT. The yaw-rate channel meets all specifications
Keywords :
aircraft control; control system synthesis; discrete systems; feedback; filters; hybrid simulation; multivariable control systems; state-space methods; Lambda; MIMO; URV; discrete quantitative feedback theory; hybrid nonlinear simulations; multiple-input-multiple-output; multivariable control; prefilters; robust discrete controller; seven-input three-output state-space system; small-angle perturbation equations of motion; three-axis noninteracting rate-commanded automatic flight control; three-axis rate-commanded automatic flight control; unmanned research vehicle; yaw-rate channel; Aerospace control; Aircraft; Automatic control; Bandwidth; Equations; Force feedback; MIMO; Poles and zeros; Robust control; Vehicles;
Conference_Titel :
Aerospace and Electronics Conference, 1991. NAECON 1991., Proceedings of the IEEE 1991 National
Conference_Location :
Dayton, OH
Print_ISBN :
0-7803-0085-8
DOI :
10.1109/NAECON.1991.165804
