On a self-tuning sliding-mass electromagnetic energy harvester
On a self-tuning sliding-mass electromagnetic energy harvester
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DOI：
10.1063/5.0005430
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发表时间：
2020-09-01
期刊：
影响因子：
1.6
通讯作者：
Zuo, L.
中科院分区：
文献类型：
--
作者：
Bukhari, M.;Malla, A.;Zuo, L.
先前的研究已经研究了能够通过使用滑动质量进行自调谐的谐振器。这种被动调谐机制可用于改善振动控制；然而，人们对振动梁和滑动质量之间的非线性动态相互作用知之甚少，特别是当这些相互作用应用于振动能量收集应用时。本文通过数值和实验研究电磁自调谐能量收集器的响应来研究这个问题。我们使用扩展的哈密顿原理提出了带有滑动质量的电磁悬臂梁的控制方程。然后使用伽辽金方法对这些方程进行离散化并进行数值求解。进行实验以验证数值分析。进行参数研究以检查不同系统参数对自调节采集器性能的影响。
Prior research has investigated resonators capable of self-tuning through the use of a sliding mass. This passive tuning mechanism can be utilized to improve vibration control; however, little is known about the nonlinear dynamic interactions between the vibrating beam and sliding mass, particularly as these apply to vibration energy harvesting applications. This paper investigates this problem by numerically and experimentally examining the response of an electromagnetic self-tuning energy harvester. We present the governing equations of this electromagnetic cantilever beam with a sliding mass using the extended Hamilton principle. These equations are then discretized using the Galerkin method and solved numerically. An experiment is carried out to validate the numerical analysis. Parametric studies are conducted to examine the effect of different system parameters on the performance of the self-tuning harvester.