Design and Simulation of Large Envelope Flight Control System

摘要

Modern robust self-scheduling technique is applied to design the flight control system for an unmanned aerial vehicle (UAV) which has a large operating range. The fast modes of scheduling controller are limited based on the disk theorem for the sake of digital implement. Firstly the UAV is approximate to an affine linear parameter varying plant using least square method. Then the robust controller is obtained, and its gain is scheduled with dynamic pressure and altitude. The structure of envelope flight control system is proposed. And the flight simulation including almost all flight modes is made with 6-freedom nonlinear model of the UAV. The result shows that the designed flight control system has satisfactory global robust stability and robust performance.