A piezoelectric unimorph power harvester operating with coupled extension and flexure modes

Author

Zi-yang Lian ; Lin Hu ; Jun Cheng ; Yu-jue Wang ; Hong-ping Hu ; Yuan-tai Hu ; Ji Wang

Author_Institution

Dept. of Mech., Huazhong Univ. of Sci. & Technol., Wuhan, China

fYear

2012

fDate

23-25 Nov. 2012

Firstpage

415

Lastpage

418

Abstract

We have set up a model of a piezoelectric unimorph power harvester (PUPH). The PUPH consists of a piezoelectric layer and a metal layer. One end of the PUPH is fixed on a vibration base, the other end is connected by a concentrated mass. The PUPH scavenges energy from coupled extension and flexure vibration when excitation is inclined with the horizontal direction. We present a theoretical analysis on the basic behaviors of the PUPH by the theory of linear piezoelectricity. The theoretical results agree well with that of finite element method.

Keywords

bending; energy harvesting; finite element analysis; piezoelectric transducers; vibrations; PUPH; concentrated mass; coupled extension vibration; energy scavenging; finite element method; flexure vibration mode; linear piezoelectricity; metal layer; piezoelectric layer; piezoelectric unimorph power harvester; vibration base; Density measurement; Educational institutions; Metals; Power generation; Power system measurements; Resonant frequency; Vibrations; Coupling vibration; Piezoelectric power harvester; Unimorph;

fLanguage

English

Publisher

ieee

Conference_Titel

Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA), 2012 Symposium on

Conference_Location

Shanghai

Print_ISBN

978-1-4673-4814-0

Type

conf

DOI

10.1109/SPAWDA.2012.6464122

Filename

6464122