Robust Aircraft Performance using Hypersurface Gain Scheduling LQI Controller for Supermaneuverable Aircraft

Abstract

A new approach to cater abrupt gain switching at boundaries of steady-state trim points in Conventional Gain Scheduling (CGS) applied to aircraft flight control applications. The primary purpose of this research is to improve the stability properties of a supermaneuverable aircraft during different mission task of flight envelope, controlled using a gain scheduled approach. An output feedback based on Linear Quadratic Integral (LQI) controller is proposed which is able to guarantee stability and performance of the required task of the entire flight envelope. The results are demonstrated using comparison of pilot control maneuvers using CGS with proposed scheduling scheme for angular rates control by keeping states and control input contraints under consideration.

Keywords

• Conventional Gain Scheduling (CGS), Linear Quadratic Integral (LQI), Gain Switching, Flight Envelope, Trim Point