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

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

doi:10.1007/s10483-007-0608-y

Applied Mathematics and Mechanics >

2007 , Vol. 28 >Issue 6: 779 - 784

DOI: https://doi.org/10.1007/s10483-007-0608-y

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

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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 date: 2006-10-08

Revised date: 2007-01-09

Online published: 2007-06-18

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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

Cite this article

CHEN Zi-guang;HU Yuan-tai;YANG Jia-shi . Piezoelectric generator based on torsional modes for power harvesting from angular vibrations[J]. Applied Mathematics and Mechanics, 2007 , 28(6) : 779 -784 . DOI: 10.1007/s10483-007-0608-y

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