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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Self Power Generation from Vibration using Piezoelectric Bimorph Actuator

압전 바이몰프 액츄에이터의 진동에 따른 자가 발전특성

  • 김창일 (고려대학교 신소재공학과) ;
  • 정영훈 (요업(세라믹)기술원 전자부품팀) ;
  • 이영진 (요업(세라믹)기술원 전자부품팀) ;
  • 백종후 (요업(세라믹)기술원 전자부품팀) ;
  • 남산 (고려대학교 신소재공학과)
  • Published : 2008.12.01
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Abstract

This paper presents the self power generation from vibration using the piezoelectric bimorph actuator. The piezoelectric bimorph actuator was well developed with PZT-PNN-Fe piezoelectric ceramics. As the applied voltage was increased, a linear change of displacement was obtained with a relatively high ratio of 12.53 um/V for the bimorph actuator. Moreover, when the motor's rotational speed was 2000 rpm, the bimorph actuator, which has a resonance frequency of 68 Hz, exhibited the most efficient generation voltage of 10.4 V. This bimorph actuator could make the LED, emitting 60 mW, working successfully. Therefore, it is anticipated that the bimorph actuator will be useful as a power source for the next-generation electronic devices.

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References

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