Control stability margin analysis of a class of aircraft overload control system

Aiming at the overload control system of a class of aircraft, the controller is designed using the traditional PID control principle, and the angular rate signal is used to replace the overload differential signal in the selection of differential terms. And the modern control theory method is used to obtain its transfer function, and the engineering method is used to draw Burdett, and its stability margin is obtained. Finally, the correctness of the method is proved by digital simulation.