Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Numerical Analysis of Deformation Mode of Flexible Plate-Type Piezoelectric Module for Evaluating Characteristics of Electrical-Energy Generation

판형 압전 진동자의 굽힘변형 모드에 따른 전압발생 특성에 관한 해석적 연구

  • Park, Jeong-Hyun (Graduate School of Mechanical Engineering, Pusan National University) ;
  • Park, Sang-Hu (School of Mechanical Engineering, ERC/NSDM, Pusan National University)
  • 박정현 (부산대학교 기계공학부 대학원) ;
  • 박상후 (부산대학교 기계공학부 / 정밀정형 및 금형가공연구소)
  • Received : 2015.03.10
  • Accepted : 2015.06.30
  • Published : 2015.08.01
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Abstract

Piezoelectric materials are well-utilized for transforming mechanical vibrations into electrical energy that can be stored and used to power a diversity of devices. In this work, these materials have been studied to improve the efficiency of a piezoelectric system, whereby the shape and vibration mode of a piezoelectric module was changed. The basic shape of the piezoelectric module used in this work comprises a width of 10 mm, a length of 30 mm, and a thickness of 0.2 mm. The structural design of the piezoelectric module is optimized using a Taguchi method to increase the corresponding electrical-energy generation. The maximum terminal voltage was defined as a characteristic value to evaluate the optimal design parameters. Through this work, we propose an optimal structure with an eccentric and centric mass; furthermore, the voltage increase of approximately 26% was obtained by comparing a general plate-vibrating piezosystem with an optimal plate-vibrating piezosystem.

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References

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