Power loss consideration in wireless piezoelectric acoustic-electric power feedthru

被引：9

作者：

Chang, Zensheu ^{[1
]}

Bao, Xiaoqi ^{[1
]}

Doty, Benjamin J. ^{[1
]}

Sherrit, Stewart ^{[1
]}

Bar-Cohen, Yoseph ^{[1
]}

Badescu, Mircea ^{[1
]}

Aldrich, Jack ^{[1
]}

机构：

[1] CALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91109 USA

来源：

SENSORS AND SMART STRUCTURES TECHNOLOGIES FOR CIVIL, MECHANICAL, AND AEROSPACE SYSTEMS 2007, PTS 1 AND 2 | 2007年 / 6529卷

关键词：

piezoelectric devices; acoustic wave; electric power supply; wireless power feed; Lamb wave;

D O I：

10.1117/12.716433

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

Piezoelectric acoustic-electric power feedthru devices that are able to transfer electric power through metallic/ferromagnetic wall are investigated. Electric energy is converted to acoustic energy by piezoelectric transducer at one side of the wall. The acoustic wave propagates through the wall and, then, it is converted back to electric energy by another transducer on the other side. For high efficient transmission, it is critical that all the energy loss should be minimized. In addition to the electrical, mechanical and electromechanical loss in the transducers and the thickness of the wall, Lamb (plate) waves are excited by the transducers in the wall and they also result in energy losses. In this study, the energy loss caused by the Lamb waves are analyzed analytically and by finite element simulations. The results and the methods to reduce the loss are presented and discussed in this presentation.

引用

页数：6

共 4 条

[1]

BAO X, 2007, SPIE SMART STRUCT MA, V6529

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[3] Efficient electromechanical network models for wireless acoustic-electric feed-throughs [J].

Sherrit, S ;

Badescu, M ;

Bao, XQ ;

Bar-Cohen, Y ;

Chang, ZS .

SMART STRUCTURES AND MATERIALS 2005: SMART SENSOR TECHNOLOGY AND MEASUREMENT SYSTEMS, 2005, 5758 :362-372

[4]

Sherrit S, 1999, ULTRASON, P921, DOI 10.1109/ULTSYM.1999.849139

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