Low Order Sliding Mode Repetitive Control for Discrete-time System under Multi-periodic Disturbances

摘要

A control method for discrete-time system is proposed. Both the advantages of sliding mode control method and repetitive control method are utilized. It can deal with a discrete-time system that present multi-periodic disturbances. When parameters change, the sliding mode control method is utilized to ensure robustness. Meanwhile, when there are multi-periodic disturbances which frequences are known, low order repetitive control can annihilate them. The effectiveness of proposed method is validated by simulations.