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用于能量收集应用的星形结构的非线性动力学及弹性元件的可变配置

Nonlinear Dynamics of a Star-Shaped Structure and Variable Configuration of Elastic Elements for Energy Harvesting Applications.

作者信息

Margielewicz Jerzy, Gąska Damian, Litak Grzegorz, Wolszczak Piotr, Trigona Carlo

机构信息

Faculty of Transport and Aviation Engineering, Silesian University of Technology, 40-019 Katowice, Poland.

Faculty of Mechanical Engineering, Lublin University of Technology, 20-618 Lublin, Poland.

出版信息

Sensors (Basel). 2022 Mar 25;22(7):2518. doi: 10.3390/s22072518.

DOI:10.3390/s22072518
PMID:35408142
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9003458/
Abstract

The subject of the model research contained in this paper is a new design solution of the energy harvesting system with a star-shaped structure of elastic elements and variable configuration. Numerical experiments focused mainly on the assessment of the configuration of elastic elements in the context of energy harvesting efficiency. The results of computer simulations were limited to zero initial conditions as it is the natural position of the static equilibrium. The article compares the energy efficiency for the selected range of the dimensionless excitation frequency. For this purpose, four cases of elastic element configurations were compared. The results are visualized based on the diagram of RMS voltage induced on piezoelectric electrodes, bifurcation diagrams, Lyapunov exponents, and Poincaré maps, showing the impact of individual solutions on the efficiency of energy harvesting. The results of the simulations show that the harvester's efficiency ranges from 4 V to 20 V depending on the configuration and the frequency range of the excitation, but the design allows for a smooth adjustment to the given conditions.

摘要

本文中模型研究的主题是一种具有弹性元件星形结构和可变配置的能量收集系统的新设计方案。数值实验主要集中在评估弹性元件配置对能量收集效率的影响。计算机模拟结果限于零初始条件，因为这是静态平衡的自然位置。本文比较了选定无量纲激励频率范围内的能量效率。为此，比较了弹性元件配置的四种情况。结果通过压电电极上感应的均方根电压图、分岔图、李雅普诺夫指数和庞加莱映射进行可视化，展示了各个解决方案对能量收集效率的影响。模拟结果表明，根据配置和激励频率范围，能量收集器的效率在4伏至20伏之间，但该设计允许对给定条件进行平滑调整。

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