A Magnet-Coil-Type Bistable Vibration Energy Harvester for Random Wave Environment
A Magnet-Coil-Type Bistable Vibration Energy Harvester for Random Wave Environment
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DOI：
10.1155/2022/3552941
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发表时间：
2022-04
影响因子：
1.6
通讯作者：
Wei Zhao;Xuguang Zhang;N. Kawada;Xilu Zhao
中科院分区：
文献类型：
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作者：
Wei Zhao;Xuguang Zhang;N. Kawada;Xilu Zhao
在本研究中，首次提出了由弹簧和质量块组成的双稳态振动模型，然后应用由线圈和磁铁组成的振动发生器，开发了一种新的双稳态振动能量采集系统。建立了振动能量采集系统的非线性运动方程，分析了系统的静态势能分布。从理论上研究了双稳态振动的特性和可能发生随机共振的周期激励频率的预测方法，并在此基础上发展了基于电磁感应的双稳态振动能量采集系统。我们预测了在1.543赫兹处最有可能发生随机共振现象的激励值。我们还进行了以预测值为中心的1.15赫兹、1.50赫兹和1.85赫兹的实验。因此，所有的实验案例都发生了随机共振。发电效率分别提高125.03%、149.05%和95.39%。
In this study, a new bistable vibration energy harvesting system is developed by originally proposing a bistable vibration model comprising a spring and a mass block and then applying a vibration generator composed of a coil and a magnet. The nonlinear equations of motion for this vibration energy harvesting system are developed and the static potential energy distribution is analyzed. The bistable vibration characteristics and the method for prediction of the periodic excitation frequency at which stochastic resonance is likely to occur are investigated theoretically, and the electromagnetic induction-based bistable vibration energy harvesting system is then developed. We predicted the excitation value that the stochastic resonance phenomenon is most likely to occur at 1.543 Hz. We also conducted experiments at 1.15 Hz, 1.50 Hz, and 1.85 Hz, which are centered on the predicted value. As a result, stochastic resonance occurred in all experimental cases. The power generation efficiency was improved by 125.03%, 149.05%, and 95.39%, respectively.