期刊
JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES
卷 28, 期 5, 页码 578-594出版社
SAGE PUBLICATIONS LTD
DOI: 10.1177/1045389X16651152
关键词
energy harvesting; diamagnetic levitation; low frequency; nonlinear
资金
- National Science Foundation [CMMI-1300684]
- Directorate For Engineering
- Div Of Civil, Mechanical, & Manufact Inn [1300684] Funding Source: National Science Foundation
This article identifies and studies key parameters that characterize a horizontal diamagnetic levitation mechanism-based low frequency vibration energy harvester with the aim of enhancing performance metrics such as efficiency and volume figure of merit. The horizontal diamagnetic levitation mechanism comprises three permanent magnets and two diamagnetic plates. Two of the magnets, lifting magnets, are placed co-axially at a distance such that each attracts a centrally located magnet, floating magnet, to balance its weight. This floating magnet is flanked closely by two diamagnetic plates which stabilize the levitation in the axial direction. The influence of the geometry of the floating magnet, the lifting magnet, and the diamagnetic plate is parametrically studied to quantify their effects on the size, stability of the levitation mechanism, and the resonant frequency of the floating magnet. For vibration energy harvesting using the horizontal diamagnetic levitation mechanism, a coil geometry and eddy current damping are critically discussed. Based on the analysis, an efficient experimental system is setup which showed a softening frequency response with an average system efficiency of 25.8% and a volume figure of merit of 0.23% when excited at a root mean square acceleration of 0.0546 m/s(2) and at a frequency of 1.9 Hz.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据