Suppression of Time-varying Periodic Disturbance Based on Novel Repetitive Control

A novel repetitive control scheme is proposed for the systems required to operate at various speeds, and subject to time-varying periodic disturbance. To suppress the time-varying periodic disturbances, a spatial-based reduced-order repetitive controller along with a temporal-based stabilizing controller is designed. The stability of the closed-loop system is proved under some certain conditions. Comparisons and simulation results are presented to illustrate the feasibility and effectiveness of the proposed control scheme.