光学精密工程2012，Vol.20Issue(5)：1002-1008,7.DOI:10.3788/OPE.20122005.1002
基于流固耦合作用的压电液压振动俘能器
Piezo-hydraulic energy harvester based on solid-fluid coupling vibration
摘要
Abstract
A Piezo-hydraulic Energy Harvester (PHEH) was presented based on solid-fluid coupling vibration to harvest low-frequency and high-level vibration energy, and its structure as well as working principle were introduced. With an established energy-conversion model, the influence factors on the piezo-hydraulic harvester were analyzed. The theoretic results show that the output performance of the PHEH depends on the vibration frequency/level, the structure and size of piezodisc/cylinder, liquid volume/performance, and system backpressure. The desired performance can not be achieved unless the above parameters are matched well. By a piezodisc with a diameter of 60 mm and a thick- ness of 0. 9 mm and a cylinder with a diameter of 16 cm and a length of 100 cm, a PHVI was fabricated and tested by taking water as liquid medium at different frequencies/backpressures/exciter-amplitudes. The test results suggest that there is an optimal vibration frequency (8 Hz) for the PHEH to achieve the maximal output voltage, which rises with the increasing of backpressure and vibration level. In the case of unvaried other parameters, the achieved voltage from the PHEH under 0 . 4 MPa is 1, 65 times that under 0 . 2 MPa.关键词
压电-液压/俘能器/流固耦合/振动能量/能量回收Key words
piezo-hydraulic/ energy harvester/ solid-fluid coupling/ vibration energy energy harvesting分类
信息技术与安全科学引用本文复制引用
李征,万杰,阚君武,王淑云,杨志刚,程光明..基于流固耦合作用的压电液压振动俘能器[J].光学精密工程,2012,20(5):1002-1008,7.基金项目
国家自然科学基金资助项目(No.51075371,51175478) （No.51075371,51175478）
浙江省自然科学基金资助项目(No.Y4110315,Y1110529) （No.Y4110315,Y1110529）
