The Design of Variable Structure Position Controller for Bushless DC Motor Using New Switching Function

새로운 스위칭 함수를 이용한 브러시리스 직류 전등기의 가변 구조 위치 제어기 설계

  • Published : 1990.07.05

Abstract

This paper discusses the application of VSCS(Variable Structure Control System) to position control of a trapezoidal type brushless DC motor. In order to simplify the overall control system and to improve the robustness, a new switching function which is composed of linear combination of only measurable state variables Sr(x) and Sr(x) is defined. The proposed new switching function is implemented using a digital signal processor(DSP). A general PWM amplifier is replaced by an ON-OFF pattern generator for the hardware simplification and digitalization. Experimental results are given to demonstrate the validity of the proposed control method.

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