Application of Adaptive Sliding Mode Position Controller with PI Tuning to Permanent Magnet Brushless DC Motor Drive System

Abstract

This paper presents a brief study of proportional integral sliding mode control (PISMC) techniques for controlling the rotor position of PMDC motor drive system. In particular, since SMC is robust in the presence of the matched uncertainties and external disturbances, the desired position is perfectly tracked. In addition, the advantages and disadvantages of both proportional-integral (PI) and sliding mode control (SMC) control methods are studied. Since the major drawback of SMC is a phenomenon, known as chattering, resulting from discontinuous controllers, the PISMC method presented reduced the chattering very well. The performance of this method, PISMC is compared with the responses of the system with PID and conventional SMC controllers, and the PISMC is found to be better with higher precision and better robustness to plant imprecision and external disturbances than PID controllers.

Keywords: Proportional-integral (PI), sliding mode control (SMC), proportional integral sliding mode control (PISMC)