The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
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A Study on The Driving Characteristics of Ultrasonic Linear Motor Using Symmetric And Anti-Symmetirc Resonance Modes

대칭-비대칭 공진모드를 이용한 초음파 리니어 모터의 구동특성 연구

  • 최명일 (한국전기안전공사 전기안전연구원) ;
  • 배석명 (한국전기안전공사 전기안전연구원) ;
  • 박태곤 (창원대학 전기공학과)
  • Published : 2007.11.01
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Abstract

Transducer for ultrasonic linear motor with the symmetric and anti-symmetric modes was studied. The ultrasonic linear motor consists of two Langevin type piezoelectric vibrators that cross at right angles with each other in tip. In order to excite symmetric and anti-symmetric resonance modes, the transducer must have a phase shift of 90 degree in space and time. Therefore, the tip of transducer moves on an elliptical motion. In this paper, the finite element analysis was used to optimize dimension and displacement of the transducer. The ultrasonic motor was fabricated using the simulated result and the driving characteristics were measured. No-load velocity was 0.28[m/s] and the maximum efficiency was 30[%] in resonance frequency.

Keywords

References

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