用于高效宽带混合振动能量收集的磁耦合谐振器内部共振功能化

Functionalization of Internal Resonance in Magnetically Coupled Resonators for Highly Efficient and Wideband Hybrid Vibration Energy Harvesting.

作者信息

Aouali Kaouthar, Kacem Najib, Bouhaddi Noureddine

机构信息

Department of Applied Mechanics, FEMTO-ST Institute, CNRS/UFC/ENSMM/ UTBM, University Bourgogne Franche-Comté, 25000 Besançon, France.

出版信息

Sensors (Basel). 2022 Oct 9;22(19):7657. doi: 10.3390/s22197657.

DOI:10.3390/s22197657

PMID:36236756

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9573156/

Abstract

The functionalization of internal resonance (IR) is theoretically and experimentally demonstrated on a nonlinear hybrid vibration energy harvester (HVEH) based on piezoelectric (PE) and electromagnetic (EM) transductions. This nonlinear phenomenon is tuned by adjusting the gaps between the moving magnets of the structure, enabling 1:1 and 2:1 IR. The experimental results prove that the activation of 2:1 IR with a realistic excitation amplitude allows the improvement of both the frequency bandwidth (BW) and the harvested power (HP) by 300% and 100%, respectively compared to the case away from IR. These remarkable results open the way towards a very large scale integration of coupled resonators with simultaneous internal resonances.

摘要

基于压电（PE）和电磁（EM）转换的非线性混合振动能量采集器（HVEH）在理论和实验上都证明了内共振（IR）的功能化。通过调整结构中移动磁体之间的间隙来调节这种非线性现象，实现了1:1和2:1的内共振。实验结果表明，与远离内共振的情况相比，在实际激励幅度下激活2:1内共振可分别使频率带宽（BW）和采集功率（HP）提高300%和100%。这些显著结果为耦合谐振器与同步内共振的大规模集成开辟了道路。