A theoretical model of a new electrostatic transducer incorporating fluidic amplification

Alan J. Walker, A.J. Mulholland, Ewan Campbell, G. Hayward

Research output: Contribution to conferencePaper

5 Citations (Scopus)
71 Downloads (Pure)

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
Pages1409-1412
Number of pages3
Publication statusPublished - 2008
Event2008 IEEE International Ultrasonics Symposium - Beijing, China
Duration: 1 Jan 1900 → …

Conference

Conference2008 IEEE International Ultrasonics Symposium
CityBeijing, China
Period1/01/00 → …

Fingerprint

fluidics
transducers
electrostatics
air
mechanical impedance
membranes
output
continuity
impedance
cavities
radiation
interactions

Keywords

  • electrostaic transducer
  • fluidic amplification

Cite this

Walker, A. J., Mulholland, A. J., Campbell, E., & Hayward, G. (2008). A theoretical model of a new electrostatic transducer incorporating fluidic amplification. 1409-1412. Paper presented at 2008 IEEE International Ultrasonics Symposium, Beijing, China, .
Walker, Alan J. ; Mulholland, A.J. ; Campbell, Ewan ; Hayward, G. / A theoretical model of a new electrostatic transducer incorporating fluidic amplification. Paper presented at 2008 IEEE International Ultrasonics Symposium, Beijing, China, .3 p.
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Walker, AJ, Mulholland, AJ, Campbell, E & Hayward, G 2008, 'A theoretical model of a new electrostatic transducer incorporating fluidic amplification' Paper presented at 2008 IEEE International Ultrasonics Symposium, Beijing, China, 1/01/00, pp. 1409-1412.

A theoretical model of a new electrostatic transducer incorporating fluidic amplification. / Walker, Alan J.; Mulholland, A.J.; Campbell, Ewan; Hayward, G.

2008. 1409-1412 Paper presented at 2008 IEEE International Ultrasonics Symposium, Beijing, China, .

Research output: Contribution to conferencePaper

TY - CONF

T1 - A theoretical model of a new electrostatic transducer incorporating fluidic amplification

AU - Walker, Alan J.

AU - Mulholland, A.J.

AU - Campbell, Ewan

AU - Hayward, G.

PY - 2008

Y1 - 2008

N2 - 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.

AB - 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.

KW - electrostaic transducer

KW - fluidic amplification

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Walker AJ, Mulholland AJ, Campbell E, Hayward G. A theoretical model of a new electrostatic transducer incorporating fluidic amplification. 2008. Paper presented at 2008 IEEE International Ultrasonics Symposium, Beijing, China, .