淡江大學機構典藏:Item 987654321/124675
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    题名: Enhancing Electrical Generation Efficiency through Parametrical Excitation and Slapping Force in Nonlinear Elastic Beams for Vibration Energy Harvesting
    作者: Wang, Yi-ren
    关键词: energy harvester;parametric excitation;nonlinear vibration;method of multiple scales
    日期: 2023-09
    上传时间: 2023-10-25 12:05:19 (UTC+8)
    出版者: MDPI
    摘要: This study aims to enhance conventional vibration energy harvesting systems (VEHs) by
    repositioning the piezoelectric patch (PZT) in the middle of a fixed–fixed elastic steel sheet instead
    of the root, as is commonly the case. The system is subjected to an axial simple harmonic force at
    one end to induce transversal vibration and deformation. To further improve power conversion,
    a baffle is strategically installed at the point of maximum deflection, introducing a slapping force
    to augment electrical energy harvesting. Employing the theory of nonlinear beams, the equation
    of motion for this nonlinear elastic beam is derived, and the method of multiple scales (MOMS)
    is used to analyze the phenomenon of parametric excitation. This study demonstrates through
    experiments and theoretical analysis that the second mode yields better power generation benefits
    than the first mode. Additionally, the voltage generation benefits of the enhanced system with the
    added baffle (slapping force) surpass those of traditional VEH systems. Overall, the proposed model
    proves feasible and holds promising potential for efficient vibration energy harvesting applications
    in various industrial sectors.
    關聯: Sensors 2023 23(17),　7610
    DOI: 10.3390/s23177610
    显示于类别:[航空太空工程學系暨研究所] 期刊論文

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