Effect of vibration modes on positions of piezoelectric ceramic patches for cantilever generators

LIU Shu-lin; XU Xiao-yong; Zhai Yu-yi; LIU yan-feng; LI yu-zhen

doi:10.3788/OPE.20111908.1801

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Effect of vibration modes on positions of piezoelectric ceramic patches for cantilever generators

Article | 更新时间：2020-08-12

- Effect of vibration modes on positions of piezoelectric ceramic patches for cantilever generators
- Optics and Precision Engineering Vol. 19, Issue 8, Pages: 1801-1809(2011)
- 作者机构：
  
  上海大学机电工程与自动化学院上海,200072
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20111908.1801
  CLC： TM35;TN384
- Received：10 December 2010，
  
  Revised：15 February 2011，
  
  Published Online：25 August 2011，
  
  Published：25 August 2011
- 稿件说明：
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刘树林, 许小勇, 翟宇毅, 刘彦峰, 李余珍. 振动模态对压电发电机陶瓷片粘贴位置的影响[J]. 光学精密工程, 2011,19(8): 1801-1809

LIU Shu-lin, XU Xiao-yong, Zhai Yu-yi, LIU yan-feng, LI yu-zhen. Effect of vibration modes on positions of piezoelectric ceramic patches for cantilever generators[J]. Editorial Office of Optics and Precision Engineering, 2011,19(8): 1801-1809
刘树林, 许小勇, 翟宇毅, 刘彦峰, 李余珍. 振动模态对压电发电机陶瓷片粘贴位置的影响[J]. 光学精密工程, 2011,19(8): 1801-1809 DOI： 10.3788/OPE.20111908.1801.

LIU Shu-lin, XU Xiao-yong, Zhai Yu-yi, LIU yan-feng, LI yu-zhen. Effect of vibration modes on positions of piezoelectric ceramic patches for cantilever generators[J]. Editorial Office of Optics and Precision Engineering, 2011,19(8): 1801-1809 DOI： 10.3788/OPE.20111908.1801.

摘要

通过对压电单晶悬臂梁振动发电机陶瓷片建模及理论计算

分析了一阶振型与二阶振型状态下陶瓷片不同贴片位置与振动发电机发电能力的关系

利用欧拉伯努利梁模型并通过电机开路电压、短路电流及LED照明试验

得到了最佳贴片位置。试验表明在一阶模态时

陶瓷片贴于悬臂梁根部的电机能够获得最大的发电量

对4种不同贴片位置电机的发电试验显示

陶瓷片贴于根部的电机其开路电压及短路电流分别是其他电机的4倍以上

驱动的LED功率为其他电机的10倍以上。而对于二阶振型

陶瓷片贴于悬臂梁中间位置的电机发电量最大

贴于根部位置的电机次之

6种不同贴片位置电机的发电试验表明

前者开路电压、短路电流分别为后者的1.2倍和1.9倍以上

两者驱动的LED功率相差1.4倍以上。试验结果与计算结果均表明:一、二阶模态时悬臂梁最佳贴附位置分别是根部和中间位置

设计时需根据不同振型选择陶瓷片最佳粘贴位置。

Abstract

By modeling and calculating the piezoelectric ceramic patches of cantilever generators

the effects of different positions of the piezoelectoic patches on the generation ability of the generators were analyzed and the optimum positions of the piezoelectric ceramic patches under the first and second vibration modes were obtained with Euler-Bernoulli model and by testing the open circuit voltages

short-circuit currents of generators and the performance of LED lighting. Experiments indicate that the generators show the optimum performance under the first vibration mode when the piezoelectric ceramic patches locate at the root of the cantilever. Its opening voltage and short current are 4 times and LED power is 10 times of experimental data of other three generators. Moreover

the generation ability is investigated under the second vibration mode. When the ceramic patch respectively locates at the middle and the root of cantilever

the generation ability of the former is superior to that of the latter

and the opening voltage and short current of the former are 1.2 and 1.9 times those of latters respectively through six generator experiments. In addition

LED power of the former is 1.4 times those of the others.It points out that the piezoelectric ceramic patches should be located at the root of beam under the first vibration mode and at the middle of beam under the second mode to improve the generation efficiency.

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references

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