Effect of electrode configuration on electricity generating capacity of piezoelectric cantilever

WANG Hong-yan;XIE Tao;SHAN Xiao-biao;YUAN Jiang-bo

Journal of Vibration and Shock ›› 2011, Vol. 30 ›› Issue (12) : 129-134.

PDF(1623 KB)
PDF(1623 KB)
Journal of Vibration and Shock ›› 2011, Vol. 30 ›› Issue (12) : 129-134.
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Effect of electrode configuration on electricity generating capacity of piezoelectric cantilever

  • WANG Hong-yan1,2; XIE Tao1; SHAN Xiao-biao1; YUAN Jiang-bo1
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Abstract

The strain distribution characteristic of a piezoelectric cantilever with a tip mass in the multimode vibration is studied in this paper. The effect of the location of electrode pairs on the voltage output of the piezoelectric cantilever is analyzed by the coupled piezoelectric-circuit finite element method. With the aim to measure the electricity generating capacity of the piezoelectric cantilever using the configuration with the segmented electrodes and the continuous electrodes around the first and second resonant frequency, an experiment measuring system was established, and the amplitude of the power output is compared. The results show that the power output of the segmented electrodes is closed to the power output of the continuous electrodes at the first vibration mode, but the peak power output of the segmented electrodes is increased about 900% at the second vibration mode. Compared with the continuous electrodes configuration, the segmented electrodes configuration can result in a significant increase of the electricity generating capacity of the piezoelectric cantilever at high frequency vibration.

Key words

Piezoelectric cantilever / Strain nodes / Electrode configuration / Energy harvesting

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WANG Hong-yan;XIE Tao;SHAN Xiao-biao;YUAN Jiang-bo. Effect of electrode configuration on electricity generating capacity of piezoelectric cantilever[J]. Journal of Vibration and Shock, 2011, 30(12): 129-134
PDF(1623 KB)

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