Optimal configurations of bistable piezo-composites for energy harvesting

被引：126

作者：

Betts, D. N. ^{[1
]}

Kim, H. A. ^{[1
]}

Bowen, C. R. ^{[1
]}

Inman, D. J. ^{[2
]}

机构：

[1] Univ Bath, Dept Mech Engn, Bath BA2 7AY, Avon, England

[2] Univ Michigan, Dept Aerosp Engn, Ann Arbor, MI 48109 USA

来源：

APPLIED PHYSICS LETTERS | 2012年 / 100卷 / 11期

基金：

英国工程与自然科学研究理事会;

关键词：

GENERATOR;

D O I：

10.1063/1.3693523

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

This paper presents an arrangement of bistable composites combined with piezoelectrics for broadband energy harvesting of ambient vibrations. These non-linear devices have improved power generation over conventional resonant systems and can be designed to occupy smaller volumes than magnetic cantilever systems. This paper presents results based on optimization of bistable composites that enables improved electrical power generation by discovering the optimal configurations for harvesting based on the statics of the device. The optimal device aspect ratio, thickness, stacking sequence, and piezoelectric area are considered. Increased electrical output is found for geometries and piezoelectric configurations, which have not been considered previously. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.3693523]

引用

页数：4

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