基于磁致伸缩/压电复合换能器的磁力辅助非线性三维宽带能量采集器

Magnetic Force-Assisted Nonlinear Three-Dimensional Wideband Energy Harvester Using Magnetostrictive/Piezoelectric Composite Transducers.

作者信息

Lin Zhiming, Li Hongyun, Lv Shaobo, Zhang Binbin, Wu Zhiyi, Yang Jin

机构信息

School of Electronics and Information Engineering, Southwest University, Chongqing 400715, China.

Key Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.

出版信息

Micromachines (Basel). 2022 Sep 29;13(10):1633. doi: 10.3390/mi13101633.

DOI:10.3390/mi13101633

PMID:36295986

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9612081/

Abstract

This paper presents a nonlinear magnetoelectric energy harvester which has the potential to harvest vibrational energy over a wide bandwidth in arbitrary motion directions. Three springs with equal intersection angles are adopted to absorb the multi-directional vibration energy. Magnetic interaction between the magnets and ME transducers allows the nonlinear motion with enhanced harvesting frequency range. Very good agreement is observed between the numerical and experimental open-circuit voltage output frequency response curves. The experimental results show that the harvester can harvest vibrational energy in an arbitrary direction, exhibiting a further bandwidth of 5.2 Hz. This study provides a new solution to effectively use the magnetoelectric energy harvester for multi-directional and bandwidth vibrational energy scavenging in the surrounding environment.

摘要

本文提出了一种非线性磁电能量采集器，它有潜力在任意运动方向上的宽频带内采集振动能量。采用三个具有相等交角的弹簧来吸收多向振动能量。磁体与磁电换能器之间的磁相互作用允许进行具有更宽采集频率范围的非线性运动。数值和实验得到的开路电压输出频率响应曲线之间观察到非常好的一致性。实验结果表明，该采集器可以在任意方向上采集振动能量，展现出5.2赫兹的额外带宽。本研究为有效利用磁电能量采集器在周围环境中进行多向和宽频带振动能量 scavenging 提供了一种新的解决方案。（注：scavenging 此处原文可能有误，推测可能是 scavenging，意为“ scavenging”，这里意译为“ scavenging”，可根据实际情况调整）