Design of Satellite Controller Based on a Kind of Interference Compensator

Satellites with large flexible antennas have the characteristics of low antenna fundamental frequency, which brings great difficulty for designing the controller. Coupled with the asymmetry of the satellite configuration, the environmental interference torque is very large on the pitch axis, which brings more difficulty to high-precision attitude control due to the interference torque. In order to suppress the influence of these interferences on the stability, a kind of interference compensator is proposed. In the controller design, the output transfer function of the interference to the control system is approximately zero through the feedforward compensation design. The simulation results show that the interference compensator design is effective.