吉林大学学报(工学版) ›› 2021, Vol. 51 ›› Issue (6): 1953-1958.doi: 10.13229/j.cnki.jdxbgxb20200596

• 车辆工程·机械工程 • 上一篇    

悬臂式压电振子宽频发电装置设计及测试

田晓超1,2(),王海刚1,2,王虎1,2,王志聪1,2,赵剑2,杨志刚3(),吴越3   

  1. 1.长春大学 机械与车辆工程学院，长春 130022
    2.长春大学 吉林省人体健康状态辨识与机能增强重点实验室，长春 130022
    3.吉林大学 机械与航空航天工程学院，长春 130022
  • 收稿日期:2020-08-10 出版日期:2021-11-01 发布日期:2021-11-15
  • 通讯作者: 杨志刚 E-mail:tianxczb@163.com;yzg@jlu.edu.cn
  • 作者简介:田晓超（1986-），男，副教授，博士. 研究方向：压电精密驱动与控制技术，微小机械与精密机械. E-mail：tianxczb@163.com
  • 基金资助:
    国家自然科学基金项目(51705031);吉林省科技厅自然科学基金项目(20200201063JC);吉林省科技厅优秀青年人才基金项目(20190103050JH)

Design and test of broadband power generation device with cantilever piezoelectric vibrator

Xiao-chao TIAN1,2(),Hai-gang WANG1,2,Hu WANG1,2,Zhi-cong WANG1,2,Jian ZHAO2,Zhi-gang YANG3(),Yue WU3   

  1. 1.Institute of Mechanical and Vehicle Engineering，Changchun University，Changchun 130022，China
    2.Jilin Provincial Key Laboratory of Human Health Status Identification and Function Enhancement，Changchun University，Changchun 130022，China
    3.College of Mechanical and Aerospace Engineering，Jilin University，Changchun 130022，China
  • Received:2020-08-10 Online:2021-11-01 Published:2021-11-15
  • Contact: Zhi-gang YANG E-mail:tianxczb@163.com;yzg@jlu.edu.cn

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摘要：

为了提高压电材料的发电量和发电效率，设计了一种悬臂式压电振子宽频发电装置。首先，对单个压电振子进行电压输出和相频特性分析，得出影响电压输出的影响因素。然后，对双压电振子整流后串/并联进行电压输出特性分析，当两压电振子串/并联整流后，输出的电压为两个压电振子输出电压的较大值且频宽增大。最后，对4个压电振子进行发电实验测试。结果表明，当输出电压为30 V时，单个压电振子的有效发电频宽约为10 Hz左右，经整流后串/并联的4个压电振子串联有效发电频率为44.5~121.3 Hz，宽度约为77 Hz，有效提高了发电频宽，该装置可应用在狭窄空间自适应供电。

关键词: 机械设计, 压电振子, 悬臂梁, 压电俘能, 正压电效应

Abstract:

To increase the generation and efficiency of piezoelectric materials, a cantilever piezoelectric vibrator broadband power generation device is designed. Firstly, the output and phase frequency characteristics of a single piezoelectric vibrator were analyzed, the parameter factors that affect the output were obtained. Then, the series/parallel output performance of the double piezoelectric vibrators connected with rectifiers were analyzed, the output voltage was the larger value of the two piezoelectric vibrators and the frequency bandwidth was increased when the series-parallel piezoelectric vibrators were rectified. Finally, the power generation tests of four piezoelectric vibrators were implemented. The test results indicate that the effective power generation bandwidth of a single piezoelectric vibrator is about 10 Hz, the effective power generation frequency range of the series/parallel four piezoelectric vibrators connected with rectifiers is 44.5 Hz~121.3 Hz and the width is about 77 Hz. The effective power generation bandwidth is improved when the output voltage is 30 V. The device can be used to adaptive power supply in narrow space.

Key words: mechanical design, piezoelectric vibrator, cantilever, piezoelectric capture energy, positive piezoelectric effect

中图分类号: 

  • TM619

图1

发电装置示意图"

图2

单振子弯曲示意图"

图3

双振子串/并联输出电路"

图4

双振子整流后各自电压-时间曲线"

图5

串/并联电压输出特性曲线"

图6

宽频发电测试装置"

图7

压电振子独立发电电压输出特性曲线"

图8

四个振子分别整流后串/并联电压输出特性"

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