中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊

重庆交通大学学报(自然科学版) ›› 2018, Vol. 37 ›› Issue (12): 133-137.DOI: 10.3969/j.issn.1674-0696.2018.12.20

• 载运工具与机电工程 • 上一篇    下一篇

内置压电悬臂梁流致振动能量收集实验研究

张敏,张鸿鑫,刘永臻,雷林   

  1. (重庆交通大学 航运与船舶工程学院,重庆 400074)
  • 收稿日期:2017-06-05 修回日期:2017-11-15 出版日期:2018-12-09 发布日期:2020-07-10
  • 作者简介:张敏(1982—),男,山东泰安人,讲师,博士,主要从事计算流体力学、能量收集方面的工作。E-mail:zhangmin@cqjtu.edu.cn。
  • 基金资助:
    重庆市教委科学技术研究项目(KJ1705142);重庆交通大学实验教学改革与研究基金项目(syjg201513);重庆交通大学研究生科研创新项目 (2017S0112)

Experimental Research on Internal Piezoelectric Cantilever Energy Harvesting From FIV

ZHANG Min, ZHANG Hongxin, LIU Yongzhen, LEI Lin   

  1. (School of Shipping and Naval Architecture, Chongqing Jiaotong University, Chongqing 400074, P. R. China)
  • Received:2017-06-05 Revised:2017-11-15 Online:2018-12-09 Published:2020-07-10

摘要: 为了研究内置式压电能量收集装置的性能,首先对压电悬臂梁在不同负载电阻下进行自由振动衰减实验,确定压电悬臂梁的主要集总参数如固有频率、等 效刚度、机电耦合系数等,得到了压电悬臂梁固有频率、阻尼、输出电压及功率随负载电阻变化的规律,确定了压电悬臂梁输出最大功率的最佳电阻。之后在风 洞中进行了流致振动能量收集实验,研究结果表明:在实验风速范围内,外圆筒的振动频率基本保持稳定,而振幅随着风速的增加而增大;在外部圆筒的激励下 ,内置的压电悬臂梁做受迫振动,其输出电压和功率随风速增加而增大随着风速的提高,圆筒的振动频率变化较小,振幅随之增大。

关键词: 机电工程, 流致振动, 内置压电悬臂梁, 能量收集

Abstract: In order to study the performance of the internal piezoelectric cantilever device, the free vibration attenuation experiment of the piezoelectric cantilever was carried out to determine the main parameters such as natural frequency, effective stiffness and electromechanical coefficients. The variation law of the natural frequency, damping, output voltage and power changing with the load resistance was obtained, and the optimum resistance of the piezoelectric cantilever beam to output the maximum power was determined. Then the FIV energy harvesting experiment was carried out in the wind tunnel. The results show that the vibration frequency of the external cylinder almost keeps stable within the experimental wind speed, whereas the amplitude increases as the wind speed increases; with the excitation of the external cylinder, the internal piezoelectric cantilever beam is forced to vibrate, and its output voltage and power increase as the wind speed increases. With the increase of wind speed, the vibration frequency of the cylinder changes little and the amplitude increases.

Key words: electromechanical engineering, flow induced vibration, internal piezoelectricity cantilever, energy harvesting

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