Modeling and experimental parametric study of a tri-leg compliant orthoplanar spring based multi-mode piezoelectric energy harvester

被引：39

作者：

Dhote, Sharvari ^{[1
]}

Yang, Zhengbao ^{[1
]}

Zu, Jean ^{[1
]}

机构：

[1] Univ Toronto, Dept Mech & Ind Engn, 5 Kings Coll Circle, Toronto, ON M5S 3G8, Canada

来源：

MECHANICAL SYSTEMS AND SIGNAL PROCESSING | 2018年 / 98卷

关键词：

Piezoelectric energy harvester; Compliant orthoplanar spring; Multi-mode; Nonlinear vibration; Multiple unimorphs; VIBRATION; GENERATOR; DESIGN;

D O I：

10.1016/j.ymssp.2017.04.031

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

This paper presents the modeling and experimental parametric study of a nonlinear multi frequency broad bandwidth piezoelectric vibration-based energy harvester. The proposed harvester consists of a tri-leg compliant orthoplanar spring (COPS) and multiple masses with piezoelectric plates attached at three different locations. The vibration modes, resonant frequencies, and strain distributions are studied using the finite element analysis. The prototype is manufactured and experimentally investigated to study the effect of single as well as multiple light-weight masses on the bandwidth. The dynamic behavior of the harvester with a mass at the center is modeled numerically and characterized experimentally. The simulation and experimental results are in good agreement. A wide bandwidth with three close nonlinear vibration modes is observed during the experiments when four masses are added to the proposed harvester. The current generator with four masses shows a significant performance improvement with multiple nonlinear peaks under both forward and reverse frequency sweeps. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：268 / 280

页数：13

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