Low-frequency Vibration-based Energy Harvester Using a Piezoelectric Composite Beam

被引：0

作者：

Dhakar, Lokesh ^{[2
]}

Liu, Huicong

Tay, F. E. H. ^{[2
,3
]}

Lee, Chengkuo ^{[1
]}

机构：

[1] Natl Univ Singapore, Dept Elect & Comp Engn, Singapore 117548, Singapore

[2] NUS Grad Sch Integrat Sci & Engn, Singapore, Singapore

[3] Natl Univ Singapore, Dept Engn Mech, Singapore 117548, Singapore

来源：

2013 8TH ANNUAL IEEE INTERNATIONAL CONFERENCE ON NANO/MICRO ENGINEERED AND MOLECULAR SYSTEMS (IEEE NEMS 2013) | 2013年

基金：

新加坡国家研究基金会;

关键词：

Energy harvester (EH); low frequency; high power output; composite cantilever beam; bandwidth widening; GENERATOR;

D O I：

暂无

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

A composite beam based piezoelectric energy harvester (EH) is designed and characterized which can be used to harvest energy with low frequency vibrations. This kind of EH is demonstrated to be 3.12 times and 1.32 times (at 0.1g) more efficient at output power generation than a standalone piezoelectric bimorph and piezoelectric bimorph with a proof mass at the free end, respectively. The resonant frequency of the EH is reduced from 275 Hz (for standalone bimorph) to 36 Hz by using the soft spring. With the aid of spring hardening effect using a stopper, the operating bandwidth is increased from 5.25 Hz to 16.4 Hz.

引用

页码：939 / 942

页数：4

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