Horizontal Bi-Stable Vibration Energy Harvesting Using Electromagnetic Induction and Power Generation Efficiency Improvement via Stochastic Resonance
Horizontal Bi-Stable Vibration Energy Harvesting Using Electromagnetic Induction and Power Generation Efficiency Improvement via Stochastic Resonance
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DOI：
10.3390/machines10100899
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发表时间：
2022-10
期刊：
影响因子：
2.6
通讯作者：
L. Guo;Wei Zhao;Jingchao Guan;Nobuyuki Gomi;Xilu Zhao
中科院分区：
文献类型：
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作者：
L. Guo;Wei Zhao;Jingchao Guan;Nobuyuki Gomi;Xilu Zhao
在本研究中，首先提出一个由弹性弹簧和质量块组成的水平双稳态振动模型，然后应用由磁铁和线圈构成的电磁感应发电装置，从而开发了一种振动能量采集系统。随后，基于一个考虑磁铁和导电线圈相互位置关系的权重函数，推导出一组同时考虑弹性弹簧弹力和电磁感应洛伦兹力的控制方程。此外，采用龙格 - 库塔方法的数值分析方法被用于同时获得振动响应位移和振动发电电压的数值解。通过实验来验证所提出的双稳态振动能量采集系统所产生的结果。结果表明，测量得到的振动响应位移和振动发电电压与分析结果一致。此外，还全面讨论了包括考虑法向动摩擦力和电磁感应阻尼力相互作用的阻尼系数的确定，以及电磁感应阻尼对振动响应位移的影响等问题。同时向双稳态振动模型添加随机和周期信号会导致随机共振，并提高振动放大效果和振动发电能力。
In this study, a vibration energy-harvesting system is developed by first proposing a horizontal bi-stable vibration model comprising an elastic spring and a mass block and then applying an electromagnetic induction power generation device composed of a magnet and a coil. Subsequently, based on a weight function that considers the mutual positional relationship between the magnet and conducting coil, a set of simultaneous governing equations that consider the elastic force of the elastic spring and the Lorentz force of electromagnetic induction is derived. Additionally, a numerical analysis method employing the Runge–Kutta method is utilized to obtain a numerical solution for the vibration response displacement and vibration power generation voltage simultaneously. Experiments are performed to verify the results yielded by the proposed bi-stable vibration energy-harvesting system. The results shows that the measured vibration response displacement and the vibration power generation voltage are consistent with the analytical results. Moreover, issues including the identification of damping coefficients that consider the mutual effects of normal kinetic friction and electromagnetic induction damping forces, as well as the effects of electromagnetic induction damping on the vibration response displacement, are discussed comprehensively. Simultaneously adding random and periodic signals to the bi-stable vibration model results in stochastic resonance and improves both the vibration amplification effect and vibration power generation.