利用Galfenol薄片的环境振动能量收集装置

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摘要针对小功耗电子设备供电的需求，本文拟对生活中存在的丰富振动能量进行利用，设计一种以Galfenol材料的磁致伸缩逆效应和法拉第电磁感应的耦合特性为实现原理，以薄片状Fe-Ga合金为核心元件，对振动进行收集并转换为电能的装置。以Jiles-Atherton磁化模型为基础，结合悬臂梁弯曲理论建立了振动能量收集装置的感应电压与应力及力和加速度间的数学关系模型；分析了振动薄片内部总应力与运动状态间的数学关系。实验表明该装置产生的电压幅值可达到201mv，并且在低频段发电效果最佳。研究成果为实现小功耗电子元件的无源供电提供一种新方法。

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	刘慧芳1
	2
	刘成龙1
	谷艳玲1
	赵俊杰1
	张靖1

关键词 ：环境振动, 能量收集, Galfenol, 薄片

Abstract：In order to meet demands of current supply for electronic devices with low power consumption, abundant vibration energy existing in environment will be utilized by mankind.Here, taking the coupling property between Galfenol material’s magnetostrictive inverse effect and Faraday electromagnetic induction as the realizing principle and flaky Fe-Ga alloy as the core element, a vibrating energy collecting device to collect environment vibration energy and convert it into electric one was designed.Based on Jiles-Atherton magnetization model and the cantilever beam bending theory, a mathematical relation model among induced voltage, stress, force and acceleration was established to analyze the mathematical relation between the total internal stress in a vibrating strip and its motion state.Tests showed that the voltage amplitude generated by the device can reach 201mv, and the power generation effect is the best within a low frequency range; the study results provide a new method for

Key words： environmental vibration energy harvesting Galfenol slice

收稿日期: 2018-03-08 出版日期: 2019-07-28

引用本文:

刘慧芳1,2,刘成龙1,谷艳玲1,赵俊杰1,张靖1. 利用Galfenol薄片的环境振动能量收集装置[J]. 振动与冲击, 2019, 38(15): 202-208.
LIU Huifang1,2, LIU Chenglong1, GU Yanling1, ZHAO Junjie1, ZHANG jing1. An environmental vibration energy harvesting device using Galfenol slices. JOURNAL OF VIBRATION AND SHOCK, 2019, 38(15): 202-208.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2019/V38/I15/202

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