The Transactions of the Korean Institute of Electrical Engineers P (전기학회논문지P)

The Korean Institute of Electrical Engineers (대한전기학회)
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A Speed Characteristics of the Ultrasonic Motor by the Multi-Parameters adjustment with Phase difference-Frequency

위상차-주파수 다중 파라미터 조절에 의한 초음파 모터 속도 특성

  • 김동옥 (한양대 대학원 제어계측공학과) ;
  • 강원창 (한양대 대학원 제어계측공학과) ;
  • 김성철 (한양대 대학원 제어계측공학과) ;
  • 오금곤 (한양대 전기공학과) ;
  • 김영동 (한양대 정보.제어계측공학과)
  • Received : 2002.07.20
  • Accepted : 2003.02.03
  • Published : 2003.03.01
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Abstract

In this study, we designed and made Ultrasonic motor-digital multi controller(USM-DMC) using FPGA chip, A54SX72A made in Actel Corporation. By the minute, USM-DMC can adjust the frequency, duty ratio, and phase difference parameters of USM by digital input to be each 11bit from PC. Therefore, when we use this controller, it is possible to apply typical three parameters individually as well as multi-parameters simultaneously to control the speed and the torque. What is more, the strongest point is that it can trace frequency based on optimized frequency as compared with the phase difference because we can input optimized resonant frequency while in motoring. And we test the speed of USM with the adjustment of multi-parameters, the phase difference-frequency. As the result of the test, in the case of the multi-parameters of the phase difference and frequency, the speed characteristic is more linear and stable, and wider in the range of control than the single-parameter of the phase difference or the frequency.

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