Repetitive control system for tracking and rejection of multiple periodic signals

This paper presents performance study of Repetitive Control (RC) system for tracking and rejection periodic signals with multiple uncorrelated frequencies. Two control approaches i.e Single Repetitive Control System (SRCS) and Multiple Repetitive Control System (MRCS) are presented here. The control schemes are designed based on the information of the frequencies of both reference and disturbance. The plant model is also required in the design. Simulation on servo motor is performed to assess the controller performances (e.g. transient response, tracking accuracy, and input response).