Design of Digital Position Controller for DC Motors Using Variable Structure Control System

가변구조 제어계통에 의한 직류 전동기의 위치제어기 설계

  • 박귀태 (고려대 공대 전기공학과) ;
  • 송명현 (순천대 전기공학과) ;
  • 강대린 (삼성전기㈜ 정밀모터 연구실)
  • Published : 1989.03.01

Abstract

The theroy of variable structure control system (VSS) is applied to the position control for DC servo-motors. In order to use the microcomputer as a control device, the principles of VSS for the continuous-time system are extended to the discrete-time system. A new switching law is proposed to achieve the reduction of chattering. It adds a new switching structure to the conventional switching sturctures. This switching region is set near and including the conventional switching curve. The new algorithm is obtained for single-input second order system, and applied to the position control of a DC servo-motor. Experimental results show that the transient behavior is improved due to the reduction of chattering and good robustness properties are demonstrated.

Keywords