Proceedings of the KIPE Conference (전력전자학회:학술대회논문집)

The Korean Institute of Power Electronics (전력전자학회)
권호 표지

The Frequency-Speed Characteristics of Ultrasonic Motor by the Change of Phase difference

위상차 변화에 따른 초음파 모터의 주파수-속도 특성

  • Kim D.O. (Division Information of Control & instrument Engineering, Chosun Univ.) ;
  • Jung G.Y. (Field of Computer Science, Dongkang College.) ;
  • Oh G.K. (Dept of Electrical Engineering, Chosun Univ.) ;
  • Kim Y.D. (Division Information of Control & instrument Engineering, Chosun Univ.)
  • 김동옥 (조선대 정보제어계측공학부) ;
  • 정국영 (동강대 컴퓨터정보과) ;
  • 오금곤 (조선대 전기공학과) ;
  • 김영동 (조선대 정보제어계측공학부)
  • Published : 2003.07.01
Download PDF
⟨ Previous Next ⟩

Abstract

To control the position, velocity and torque of the ultrasonic motor, a great variety of method are proposed such as the amplitude, phase difference, frequency and so on. In the case of phase difference method, it has some advantages: it can control the direction and velocity of rotation only adjusting the phase difference and it has wide control-band. During the USM driving on adjusting phase difference, its characteristic was transformed by the change of resonance-frequency of stator, which means that the resonance frequency is different according to the phase difference. Consequently, we need to set up the most suitable driving frequency according to each phase difference.

Keywords