A scalable concept for micropower generation using flow-induced self-excited oscillations

被引：104

作者：

St Clair, D. ^{[1
]}

Bibo, A. ^{[1
]}

Sennakesavababu, V. R. ^{[1
]}

Daqaq, M. F. ^{[1
]}

Li, G. ^{[1
]}

机构：

[1] Clemson Univ, Coll Engn & Sci, Clemson, SC 29634 USA

来源：

APPLIED PHYSICS LETTERS | 2010年 / 96卷 / 14期

基金：

美国国家科学基金会;

关键词：

damping; oscillations; piezoelectricity; wind power plants; REED VALVES; VIBRATION;

D O I：

10.1063/1.3385780

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Inspired by music-playing harmonicas that create tones via oscillations of reeds when subjected to air blow, this paper entails a concept for microwind power generation using flow-induced self-excited oscillations of a piezoelectric beam embedded within a cavity. Specifically, when the volumetric flow rate of air past the beam exceeds a certain threshold, the energy pumped into the structure via nonlinear pressure forces offsets the system's intrinsic damping setting the beam into self-sustained limit-cycle oscillations. The vibratory energy is then converted into electricity through principles of piezoelectricity. Experimental and theoretical results are presented demonstrating the feasibility of the proposed concept.

引用

页数：3

共 15 条

[1] Generic architectures and design methods for autonomous sensors [J].