• Title/Summary/Keyword: 정밀모터

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Development of an Ultrasonic Motor and Evaluation Device (압전초음파모터 제작 및 평가장치 개발)

  • Sin, Seong-Su;Ryu, Yeong-Su;Kim, Yu-Man
    • The Journal of the Acoustical Society of Korea
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    • v.15 no.1
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    • pp.10-16
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    • 1996

  • Ultrasonic motor is a motor driven by the stator via frictional contact forces generated from ultrasonic vibration of piezoelectric elements. In order to control the ultrasonic motor, it is essential to measure accurately the motor characteristics with respect to driving parameters such as frequency, voltage, phase difference and duty ratio of the driving signals. In this paper, a PC-interfaced evaluation device is developed, and the characteristic curves of the fabricated ultrasonic motor are measured with those parameters. All driving parameters are processed digitally. The developed evaluation device can facilitate charateristics measurements effectively, and provide a base for digital control of the ultrasonic motor.

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