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Piezoelectric Energy Harvesting and Testing Based on Forced Vibration

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Abstract:

The methods of piezoelectric energy harvest and detection based on forced vibration are introduced in this paper. Firstly, the mechanical energy of the forced vibration is converted into alternating current energy by using the piezoelectric harvester, and then the AC currents are rectified through the full bridge rectifier circuits, and finally the capacitor filter circuits are adopted to obtain the stable DC output. It also implements the voltage waveform detection during above energy harvesting process. The experimental results show that piezoelectric oscillator has the characteristics of simple structure and support stability, and its forced vibration frequency is independent of the structural natural frequency. The piezoelectric harvester forced with the vibration source can obtain an effective energy-harvested electric output.

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Info:

Periodical:

Applied Mechanics and Materials (Volumes 687-691)

Pages:

3342-3345

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.687-691.3342

Citation:

Cite this paper

Online since:

November 2014

Authors:

Min Hua Xu, Fa Rong Gao*, Lu Lu Chen, Juan Hong Shen, Shan Shan Ren

Keywords:

Filter, Forced Vibration, Piezoelectric Harvester, Rectifier

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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