A Chaotic Vibration Energy Harvester Using Magnetic Material
A Chaotic Vibration Energy Harvester Using Magnetic Material
复制标题
使用磁性材料的混沌振动能量收集器
DOI：
10.1088/0964-1726/24/2/025033
复制
发表时间：
2015
影响因子：
4.1
通讯作者：
Hajime Igarashi
中科院分区：
文献类型：
--
作者：
Takahiro Sato;Hajime Igarashi
本文提出了一种新型宽带电磁振动能量采集器（VEH），该采集器由嵌入线圈轴线的磁芯组成。磁芯产生一种非线性磁力，这就导致了动磁系统的非线性行为。此外，磁芯增加了与线圈的磁链。这些特性提高了VEH的工作带宽和输出功率。数值分析和实验测量结果表明，该系统的工作带宽在30 Hz以上，输出功率保持在0.1 mW左右。此外，由于振子受到非线性力的作用，所提出的VEH以复杂振荡的方式运行。对测量振荡的李雅普诺夫指数的评估表明，所提出的VEH产生混沌振荡。
This paper presents a new wideband electromagnetic vibration energy harvester (VEH) composed of a magnetic core embedded into the coil axis. The magnetic core generates a nonlinear magnetic force, which gives rise to the nonlinearity in the behavior of the VEH. Moreover, the magnetic core increases the flux linkage with the coil. These features improve the operational bandwidth and output power of the VEH. Numerical analysis and experimental measurements reveal that the operational bandwidth of the proposed VEH is over 30 Hz in which the output power is kept about 0.1 mW. Moreover, the proposed VEH operates by complicated oscillation due to nonlinear forces acting on the oscillator. Evaluation of the Lyapunov exponent for the measured oscillation suggests that the proposed VEH produces chaotic oscillation.