A theoretical model of a new electrostatic transducer incorporating fluidic amplification

Alan Walker, A.J. Mullholland, E. Campbell, G. Hayward

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

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Abstract

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
Original languageEnglish
Title of host publication2008 IEEE Ultrasonics Symposium
Subtitle of host publicationProceedings of a meeting held 2-5 November 2008, Beijing, China
PublisherInstitute of Electrical and Electronics Engineers
Pages1409-1412
ISBN (Electronic)9781424424801
DOIs
Publication statusE-pub ahead of print - 1 Jan 2009
Event IEEE International Ultrasonics Symposium, Beijing, China, 2008 - Location unknown - please update
Duration: 1 Jan 20091 Jan 2009

Conference

Conference IEEE International Ultrasonics Symposium, Beijing, China, 2008
Period1/01/091/01/09

Keywords

  • electrostatic transducer
  • resonating conduits

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