Journal of the Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회논문지)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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A Study on Generating Characteristics of Circular Unimorph-Type Piezoelectric Transducer

원판형 유니몰프타입 압전 트랜스듀서의 발전특성 연구

  • Park, Choong-Hyo (Department of Electrical Engineering, Changwon National University) ;
  • Kim, Jong-Wook (Department of Electrical Engineering, Changwon National University) ;
  • Jeong, Seong-Su (Department of Electrical Engineering, Changwon National University) ;
  • Chong, Hyon-Ho (Korea Electrotechnology Research Institute) ;
  • Kim, Myong-Ho (Department of Ceramic & Science Engineering, Changwon National University) ;
  • Park, Tae-Gone (Department of Electrical Engineering, Changwon National University)
  • Received : 2010.05.14
  • Accepted : 2010.12.06
  • Published : 2011.01.01
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Abstract

On this paper, a circular unimorph-type piezoelectric transducer was proposed and studied. The transducer was fabricated by attaching a circular-shaped PZT ceramic to a circular plate of brass and output characteristics of the fabricated transducer were then analyzed and measured by changing driving points where the mechanical vibrations were applied. Two conditions depending on the location of vibration were respectively defined as a center forced model and an edge forced model. The resonance frequency and output voltage of the models were simulated by using ANSYS, a FEM(finite element method) program. Based on the results of the analyses, the vibration experiment was conducted and the output characteristics then measured through measurement equipment. As a result, the maximum output characteristics of two models were respectively generated at each resonance frequency and the resonance frequency of the center forced model was lower than the edge forced model.

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References

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