Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Efficiency Improvement of Linear Ultrasonic Motor Using Arrangement for Magnification of Displacement

변위확대기구를 이용한 선형 초음파 전동기의 효율 개선

  • 이명훈 (한국교원대학교 기술교육과) ;
  • 우상호 (한국교원대학교 기술교육과) ;
  • 김진수 (한국교원대학교 기술교육과)
  • Published : 2000.11.01
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Abstract

In this paper, we studied efficiency improvement of linear ultrasonic motor using projection. The principle of ultrasonic motor is to use an elliptic motion generated at the side of the vibrator, and the elliptic motion of the ultrasonic motor was obtained by complex oscillation of L$_1$-B$_4$ mode. As the experimental results, the efficiency of linear ultrasonic motor without projection was 1.52[%] when applied voltage was 56[V] in resonance frequency 58.4[kHz]. The efficiency of linear ultrasonic motor using projection was 3.36[%] when applied voltage was 56[V] in resonance frequency 58.4[kHz]. The efficiency was improved by projection.

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