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Applied Mathematics and Mechanics (English Edition) ›› 2007, Vol. 28 ›› Issue (6): 779-784 .doi: https://doi.org/10.1007/s10483-007-0608-y

• 论文 • 上一篇    下一篇

Piezoelectric generator based on torsional modes for power harvesting from angular vibrations

陈子光, 胡元太, 杨嘉实   

  • 收稿日期:2006-10-08 修回日期:2007-01-09 出版日期:2007-06-18 发布日期:2007-06-18
  • 通讯作者: 胡元太

Piezoelectric generator based on torsional modes for power harvesting from angular vibrations

CHEN Zi-guang, HU Yuan-tai, YANG Jia-shi   

    1. Institute of Mechanics and Sensing Technology, School of Civil Engineering and Architecture, Central South University, Changsha 410083, P. R. China;
    2. Department of Mechanics, Huazhong University of Science and Technology, Wuhan 430074, P. R. China;
    3. Department of Engineering Mechanics, University of Nebraska, Lincoln NE 68588-0526, USA
  • Received:2006-10-08 Revised:2007-01-09 Online:2007-06-18 Published:2007-06-18
  • Contact: HU Yuan-tai

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Abstract: Torsional vibration of a circular piezoelectric shell of polarized ceramics mounted on a rotationally vibrating base is analyzed. The shell is properly electroded and connected to a circuit such that an electric output is generated. The structure analyzed represents a piezoelectric generator for converting mechanical energy from angular vibrations to electrical energy. Analytical expressions and numerical results for the output voltage, current, power, efficiency and power density are given.

Key words: torsional vibration, piezoelectric generator, power harvesting, efficiency

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