Design of attitude determination and control system of high subsonic UAV flight

Attitude determination and control problems are the key problems of flight control of unmanned aerial vehicle(UAV).A flight control system of a high subsonic UAV is designed,which includes flight control computer,integrated navigation computer,electric servo actuator,sensors,flight parameters recorder and ground checkout unit.An attitude measurement system composed of speed gyro,accelerometer,magnetic heading meter and GPS,and an attitude determination algorithm based on information fusion Kalman filtering is given.An attitude control strategy based on three single-variable control loops is designed.The simulation results show the effectiveness of the high subsonic UAV attitude determination and control methods.