Smart Sand-a wide bandwidth vibration energy harvesting platform

被引：105

作者：

Marinkovic, Bozidar ^{[1
]}

Koser, Hur ^{[1
]}

机构：

[1] Yale Univ, Dept Elect Engn, New Haven, CT 06520 USA

来源：

APPLIED PHYSICS LETTERS | 2009年 / 94卷 / 10期

基金：

美国国家科学基金会;

关键词：

energy harvesting; piezoelectric transducers; vibrations; FABRICATION; GENERATOR;

D O I：

10.1063/1.3097207

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We propose a concept for true wide bandwidth vibration energy harvesting. Our approach exploits nonlinear stretching of fixed-fixed beams in an off-resonance mode, effectively expanding the operational frequency range well beyond the narrow bandwidth of linear resonators. Our initial prototype demonstrates operation between 160-400 Hz, without the need for frequency tuning. A simple dynamic model shows good agreement with measurements. Optimized device geometry will allow for even lower frequency operation (starting at 60 Hz) at strain levels above 1e-3 (ideal for piezoelectric transduction).

引用

页数：3

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