Design of high precision digital repetitive controller for flight simulator servosystem

This paper discusses a discrete-time repetitive control system from the viewpoint of practical engineering. The proposed controller method can guarantee fast convergence of the speed tracking error to zero. High rank digital low pass filter and dynamic compensator are in the repetitive controller, and the tracking precision and system stability are guaranteed. The proposed scheme is applied to digital speed tracking of flight simulator servo system. The simulation results indicate that the output value follows the periodic reference input signal with very small error within finite steps, and that higher tracking precision and robustness can be gotten.