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Feedforward-Feedback based Satellite Attitude Trajectory Tracking Control

Aiming at the problem of low control accuracy and serious hysteresis effect of feedback control in satellite orbit-perpendicular swing scanning, a feedforward-feedback controller for tracking satellite attitude trajectory is designed. A PID controller with good stability performance is used in the feedback link; the desired angular acceleration and the desired attitude change are regarded as system interference, and the feedforward compensation is performed. The simulation results show that the effect of the proposed controller is better than that of the feedback controller, and the tracking accuracy of the feedforward-feedback controller reaches 0.047° when the ±45° swing maneuver is carried out with a period.