On a doubled-frequency squared-amplitude hybrid energy harvester

IF 2.8 3区工程技术 Q2 MECHANICS

International Journal of Non-Linear Mechanics Pub Date : 2025-06-19 DOI:10.1016/j.ijnonlinmec.2025.105192

Nguyen Ngoc Hung , La Duc Viet , Nguyen Ngoc Linh

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引用次数: 0

Abstract

In this study, a nonlinear piezoelectric-electromagnetic hybrid energy harvester is proposed to combine a linear transverse motion of the piezoelectric bimorph and a nonlinear axial motion of the magnet inside a coil. By simply releasing the axial motion, the hybrid harvester can improve the power harvested in comparison with the optimal piezoelectric harvester. The governing equations contain the partial differential equation modeling the distributed-parameter of piezoelectric harvester and the ordinary differential equations modeling the lumped-parameter model of electromagnetic harvester. Two important phenomena are revealed: the frequency-doubling and squared-amplitude effects. The first phenomenon is used to derive the quartic equation that determines the dimensionless optimal parameters. The second one explains the improved performance of the hybrid harvester. The conclusions drawn from theoretical analysis are verified by simulation using a Multi Flexible Body Dynamics software and by a proof of concept test.

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在双频平方振幅混合能量采集器上

在这项研究中，提出了一种非线性压电-电磁混合能量收集器，结合了压电双晶片的线性横向运动和线圈内磁体的非线性轴向运动。通过简单地释放轴向运动，混合收割机可以比最佳的压电收割机提高收获功率。控制方程包含了模拟压电采集器分布参数的偏微分方程和模拟电磁采集器集总参数模型的常微分方程。揭示了两种重要现象：倍频效应和振幅平方效应。利用第一种现象推导出确定无量纲最优参数的四次方程。第二个解释了混合收割机性能的提高。通过多柔体动力学软件的仿真和概念验证试验，验证了理论分析得出的结论。

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来源期刊

International Journal of Non-Linear Mechanics 物理-力学

CiteScore

5.50

自引率

9.40%

发文量

192

审稿时长

67 days

期刊介绍： The International Journal of Non-Linear Mechanics provides a specific medium for dissemination of high-quality research results in the various areas of theoretical, applied, and experimental mechanics of solids, fluids, structures, and systems where the phenomena are inherently non-linear. The journal brings together original results in non-linear problems in elasticity, plasticity, dynamics, vibrations, wave-propagation, rheology, fluid-structure interaction systems, stability, biomechanics, micro- and nano-structures, materials, metamaterials, and in other diverse areas. Papers may be analytical, computational or experimental in nature. Treatments of non-linear differential equations wherein solutions and properties of solutions are emphasized but physical aspects are not adequately relevant, will not be considered for possible publication. Both deterministic and stochastic approaches are fostered. Contributions pertaining to both established and emerging fields are encouraged.