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.
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页数：14
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