| 赵庆玲,宋汝君,罗莲健,王郭泰,周海安.双L支架回扣式压电俘能器：设计与实验[J].电子测量与仪器学报,2024,38(6):34-41 |
| 双L支架回扣式压电俘能器：设计与实验 |
| Double L bracket buckle type piezoelectric energyharvester: Design and experiment |
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| DOI： |
| 中文关键词: 振动能 双L支架 磁力 压电 俘能 |
| 英文关键词:vibration energy double L bracket magnetic force piezoelectricity energy harvesting |
| 基金项目:山东省自然科学基金(ZR2021ME211)、山东省自然科学基金(ZR2022ME053)、山东省高等学校青年创新团队发展计划(2022KJ234)项目资助 |
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| Author | Institution |
| Zhao Qingling | School of Mechanical Engineering, Shandong University of Technology, Zibo 255000, China |
| Song Rujun | School of Mechanical Engineering, Shandong University of Technology, Zibo 255000, China |
| Luo Lianjian | School of Mechanical Engineering, Shandong University of Technology, Zibo 255000, China |
| Wang Guotai | School of Mechanical Engineering, Shandong University of Technology, Zibo 255000, China |
| Zhou Haian | School of Mechanical Engineering, Shandong University of Technology, Zibo 255000, China |
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| 中文摘要: |
| 为了获得一种便携式、简单的振动俘能器，克服传统俘能器输出低、频率高等问题，提出了一种双L支架回扣式压电俘能器，结合了张拉结构的非线性特性与压电技术，有效提高了俘能系统的动态响应和输出性能。对俘能器进行实验探究，分析了外接电阻值、磁距、激振加速度和角度等因素对俘能器输出性能的影响。实验结果表明，俘能器存在最优外接电阻值使输出功率达到峰值，最优外接电阻值为200 kΩ。磁力的引入能显著提高俘能器的输出性能。在磁铁距离为18 mm时，俘能器俘获的能量最多，其最佳输出性能在12.1 Hz时达到1.12 mW。此外，激振加速度对俘能系统的输出特性有着显著影响，激振加速度越大，俘能器的输出电压与输出功率也随之增大。在激振加速度为0.4 g，频率为12 Hz的条件下，俘能系统达到了1.39 mW的最大输出功率。双L支架回扣式俘能器在0°~45°角度范围内具有良好的输出电压与输出功率，具有在不确定激振方向条件下工作的优势。实际应用实验进一步证明，该俘能器能够持续输出较大且稳定的电压，为解决传统俘能器输出低等问题提供了有效的解决方案。 |
| 英文摘要: |
| In order to obtain a portable and simple vibration energy harvester and overcome the problem of low output of traditional energy harvesters, a double-L bracket kickback piezoelectric energy harvester was proposed, which combined the nonlinear characteristics of the tensile structure with piezoelectric technology, which could effectively improve the dynamic response and output performance of the energy harvester. The effects of external resistance, magnetic distance, excitation acceleration and angle on the output performance of the harvester were analyzed. The experimental results show that the output power reaches the peak value of the harvester at the optimal external resistance value, and the optimal external resistance value is 200 kΩ. The introduction of magnetic force can significantly improve the output performance of the energy harvester. At a magnetic distance of 18 mm, the harvester captures the most energy, and its optimal output performance reaches 1.12 mW at 12.1 Hz. In addition, the excitation acceleration has an obvious impact on the output characteristics of the energy harvesting system, and the output voltage and output power of the energy harvester also increase with the larger the excitation acceleration, and the maximum output power of the energy harvesting system reaches 1.39 mW under the condition of the excited acceleration of 0.4 g and the frequency of 12 Hz. The harvester has good output voltage and output power in the angle range of 0°~45°, and has the advantage of working under the condition of uncertain excitation direction. Practical application experiments further prove that the energy harvester can continuously output a large and stable voltage, which provides an effective solution to solve the problem of low output of traditional energy harvester. |
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