Engineering Design of High-speed Vehicle Attitude Control System Based on Active Disturbance Rejection Control

In this paper, a high-speed vehicle attitude control system design method based on active disturbance rejection control (ADRC) is proposed. In view of the increasingly complex vehicle dynamics model and the problems of slow response and large steady-state error of the PID controller under high-speed and complex environmental conditions, this design method is proposed. Firstly, the attitude controller is designed by the frequency domain design method, and then the ADRC is designed on this basis. The control effect of the two control systems under wind disturbance is compared through 6-DOF dynamics simulation. The simulation results show that the ADRC has faster response, smaller overshoot and smaller steady-state error, and is more capable of reducing the influence of external disturbances on the vehicle system. Hence the ADRC has better robustness and anti-disturbance.