Characteristics of Ultrasonic Motor using Voltage Control and Phase Difference Control

초음파 모터의 전압 및 위상차 제어 특성

  • Shin, Duk (Dept. of Control & Instrumentation Eng. Cho-Sun University) ;
  • Kim, Dong-Ok (Dept. of Control & Instrumentation Eng. Cho-Sun University) ;
  • Ko, Nak-Yong (Dept. of Control & Instrumentation Eng. Cho-Sun University) ;
  • Choi, Han-Soo (Dept. of Control & Instrumentation Eng. Cho-Sun University) ;
  • Kim, Young-Dong (Dept. of Control & Instrumentation Eng. Cho-Sun University)
  • 신덕 (조선대학교 제어계측공학과) ;
  • 김동옥 (조선대학교 제어계측공학과) ;
  • 고낙용 (조선대학교 제어계측공학과) ;
  • 최한수 (조선대학교 제어계측공학과) ;
  • 김영동 (조선대학교 제어계측공학과)
  • Published : 1996.07.22

Abstract

The ultrasonic motor(USM) has good characteristics such as compact size, silent motion, low speed, high torque and high speed response. The USM is driven by 2-phase AC electricity. The control parameters of USM are voltage, phase difference, frequency of input power, etc. In this paper, we propose voltage difference control. And we designed USM controller to adjust voltage and phase using pLSI(programmable Large Scale Integration). Voltage difference control has many advantages that are lower current, lower power than phase difference control. Especially there is nearly zero ampere at the zero point of speed and torque. we can apply this voltage difference control to the compliance control of DD manipulator.

Keywords