Abstract:A parafoil trajectory tracking controller based on switching strategy is proposed to solve the problems of strong disturbance and large time delay in parafoil trajectory tracking control. Combining with the advantages of linear active disturbance rejection control (ADRC), which has strong disturbance rejection capability and fast response speed, and the advantages of predictive control, which can effectively overcome the time delay of the system, has high tracking accuracy and good robustness, the two-dimensional trajectory tracking guidance strategy is adopted to realize the tracking control of the parafoil trajectory by tracking the course angle of the target trajectory; In the switching strategy, the controller switching rule of dual switching quantity is designed according to the heading angle deviation, which reduces the switching frequency between controllers and improves the reliability of dual controller switching. Simulation results show that, compared with the single controller, the switching controller has better tracking performance for a given homing trajectory.