Performance of bistable piezoelectric cantilever vibration energy harvesters with an elastic support external magnet

被引：108

作者：

Gao, Y. J. ^{[1
]}

Leng, Y. G. ^{[1
,2
]}

Fan, S. B. ^{[1
]}

Lai, Z H ^{[1
]}

机构：

[1] Tianjin Univ, Sch Mech Engn, Tianjin 300072, Peoples R China

[2] Tianjin Univ, Minist Educ, Key Lab Mech Theory & Equipment Design, Tianjin 300072, Peoples R China

来源：

SMART MATERIALS AND STRUCTURES | 2014年 / 23卷 / 09期

基金：

中国国家自然科学基金;

关键词：

energy harvesting; bistable oscillation; piezoelectric cantilever; elastic support;

D O I：

10.1088/0964-1726/23/9/095003

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Based on the research results of conventional rigid support nonlinear energy harvesters, in this paper we conceive a kind of structure with an elastic support external magnet with the intent to keep the system in the state of bistable oscillation, even under low-intensity excitation conditions. It has been proved that elastic support systems have better power output performance than rigid support systems when excited at low-intensity vibrations. In addition, elastic support nonlinear energy harvesters do not need real-time adjustment of the magnet interval towards the variable-intensity random excitation source, consequently achieving maximum power output and sufficient electromechanical energy conversion of the system.

引用

页数：14

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