|本期目录/Table of Contents|

 压电液压隔振器的能量回收特性分析与测试(PDF)

《纳米技术与精密工程》[ISSN:1672-6030/CN:12-1351/O3]

期数:
2013年3期
页码:
196-201
栏目:
微机电系统
出版日期:
2013-05-15

文章信息/Info

Title:
 Energy Harvesting Performance of a Piezo-Hydraulic Vibration Isolator
作者:
 阚君武1 徐海龙1 王淑云1 王鸿云 1 李 征2万 杰2
 (1. 浙江师范大学精密机械研究所, 金华321004;
2. 吉林大学机械科学与工程学院, 长春130022)
Author(s):
 Kan Junwu1 Xu Hailong1 Wang Shuyun1 Wang Hongyun1 Li Zheng2 Wan Jie2
 (1. Institute of Precision Machinery, Zhejiang Normal University, Jinhua 321004, China;
2. College of Mechanical Science and Engineering, Jilin University, Changchun 130022, China )
关键词:
隔振器 压电液压 能量回收
Keywords:
vibration isolator piezo-hydraulic energy harvesting
分类号:
TH384
DOI:
-
文献标识码:
A
摘要:
为实现高性能的振动主动控制、振动能量回收以及基于能量回收的自供电半主动振动控制,提出一种压电液压隔振器.基于实际流体的可压缩性,建立了压电液压隔振器的能量回收系统模型并进行了模拟仿真分析,获得了相关要素对发电量的影响规律.结果表明,压电液压隔振器的发电能力随系统背压及液压缸振幅的增加而增加,且存在最佳压电振子直径、厚度以及直径-厚度比使发电量最大.采用Ф60×1.6 mm3单晶压电振子及Ф16×100 mm3液压缸制作了试验样机,并以水为工作介质进行了不同频率、背压、激振器振幅条件下的试验测试.试验所获得的压电液压隔振器的最佳工作频率仅为6 Hz,可用于低频振动能量回收.在频率为6 Hz、激振器输入电压为9 V、背压为0.4 MPa时,发电量为2.42 mJ;当其他条件相同,背压为0.4 MPa时的发电量约为无背压时的20倍.
Abstract:
 A piezo-hydraulic vibration isolator (PHVI) was presented for active vibration control, vibration energy harvesting, and self-powered semi-active vibration control based on energy harvesting. A theoretical model for the PHVI to harvest vibration energy was established and simulated based on the compressibility of actual liquid. The analytical results show that the electrical energy generated from the PHVI depends greatly on system parameters, the obtained electrical energy increases with the increase of backpressure and vibration amplitude of the cylinder, and there exist the optimal diameter and thickness of piezodisc and their ratio for the PHVI to achieve the maximal energy. A PHVI prototype was fabricated with a piezodisc measuring Ф60×1.6 mm3 and a cylinder measuring Ф16×100 mm3. It was tested with water as liquid medium at different frequencies, backpressures, and exciter-amplitudes. The optimal frequency for the PHVI to achieve peak energy is 6 Hz, which is desirable for low-frequency vibration energy harvesting. When the exciter is driven at 6 Hz, 9 V and 0.4 MPa, the obtained electrical energy is 2.42 mJ. The electric energy under the backpressure of 0.4 MPa is about 20 times greater than that without backpressure.

参考文献/References

备注/Memo

备注/Memo:
 收稿日期: 2012-02-12.
基金项目: 国家自然科学基金资助项目(51075371,51175478);浙江省自然科学基金资助项目(Y4110315,Y1110529).
作者简介: 阚君武(1965— ),男,教授,博士,jutkjw@yahoo.com.cn.
通讯作者: 王淑云,教授,wshy888@yahoo.com.cn.
更新日期/Last Update: 2013-05-22