Design of Aircraft Active Disturbance Rejection Tracking Controller

To solve the defects that nonlinear dynamic inverse method was sensitive to the model errors and disturbance, an aircraft tracking controller based on active disturbance rejection control and inverse dynamics method is designed in this study. Firstly, a six-degree-of-freedom dynamic model of aircraft under wind disturbance conditions is established. Then, a tracking controller is designed to control ground speed and flight path angle. The designed controller is composed of an attitude controller in the inner loop and a maneuver generator in the outer loop. The attitude controller is composed of an optimal tracking differentiator and a linear active disturbance rejection controller. The maneuver generator is to control the flight path angle and throttle. It is based on the inverse dynamics method which is composed of the analytical method and numerical iteration method. Finally, a simulation test is made. The results show that the designed tracking controller can track the command ground speed and the flight path angle accurately under complex disturbance with strong robustness. In addition, the parameters in the design are easy to tune, which provides convenience in engineering implementation.