Non-contact magnetic cantilever-type piezoelectric energy harvester for rotational mechanism

被引：50

作者：

Wu, Wen-Hsiang ^{[1
]}

Kuo, Kai-Chun ^{[1
]}

Lin, Yu-Hsiang ^{[1
]}

Tsai, Yao-Chuan ^{[1
]}

机构：

[1] Natl Chung Hsing Univ, Dept Bioind Mechatron Engn, Taichuang 402, Taiwan

来源：

MICROELECTRONIC ENGINEERING | 2018年 / 191卷

关键词：

Piezoelectric energy harvester; Magnetic force; Rotational mechanism; Resonant frequency; Duty ratio;

D O I：

10.1016/j.mee.2018.01.026

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this work, a piezoelectric energy harvester excited by the magnetic force was proposed and developed for the rotational mechanism applications. The non-contact magnetic force was employed for exciting the piezoelectric cantilever vibration and avoiding power frictional loss. The different directions and configurations of magnetic force, attractive force and repulsive force, were designed and optimized for the piezoelectric energy harvesting system. The different exciting frequencies and duty ratios were carried out by the rotational mechanism for achieving the high power generation. When the exciting frequency approaches the natural frequency of piezoelectric cantilever beam and the duty ratio is larger, the highest power 1.23 mW was achieved by the alternate attractive and repulsive magnetic forces. (C) 2018 Elsevier B.V. All rights reserved.

引用

页码：16 / 19

页数：4

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