A theoretical model of a new electrostatic transducer incorporating fluidic amplification

被引：6

作者：

Walker, Alan J. ^{[1
]}

Mulholland, Anthony J. ^{[1
]}

Campbell, Ewan ^{[2
]}

Hayward, Gordon ^{[2
]}

机构：

[1] Univ Strathclyde, Dept Math, Glasgow G1 1XH, Lanark, Scotland

[2] Univ Strathclyde, Ctr Ultrason Engn, Dept Elect & Elect Engn, Glasgow G1 1XH, Lanark, Scotland

来源：

2008 IEEE ULTRASONICS SYMPOSIUM, VOLS 1-4 AND APPENDIX | 2008年

关键词：

D O I：

10.1109/ULTSYM.2008.0342

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

This article concerns the design of a new electrostatic transducer whose backplate consists of a series of drilled pipes. A new one-dimensional model is derived which considers the interaction of the membrane with the air load, the air cavities, and the drilled pipes in the backplate. Dynamic equations for the impedance in each component of the device are calculated analytically and connected using interface conditions of continuity of pressure and radiation conditions into the air load. The model is able to produce solutions to the mechanical impedance of the device and the displacement of the membrane as a function of the device's design parameters. Model results for the output pressure compare well with previous experimental data. The inverse problem of retrieving the design parameters for a desired output is discussed.

引用

页码：1409 / +

页数：2

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