A theoretical model of a new electrostatic transducer incorporating fluidic amplification

Alan J. Walker; Anthony Mulholland; Ewan Fraser Campbell; G. Hayward

A theoretical model of a new electrostatic transducer incorporating fluidic amplification

Alan J. Walker, Anthony Mulholland, Ewan Fraser Campbell, G. Hayward

Department of Engineering Mathematics

Research output: Chapter in Book/Report/Conference proceeding › Conference Contribution (Conference Proceeding)

6 Citations (Scopus)

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 language	English
Title of host publication	2008 IEEE International Ultrasonics Symposium, Beijing, China, 1/01/00
Publication status	Published - 2008

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https://pureportal-staging.strath.ac.uk/en/publications/770b7e6e-c4fe-40e5-81d0-061911459d92

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title = "A theoretical model of a new electrostatic transducer incorporating fluidic amplification",

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.",

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AU - Mulholland, Anthony

AU - Campbell, Ewan Fraser

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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.

UR - https://pureportal-staging.strath.ac.uk/en/publications/770b7e6e-c4fe-40e5-81d0-061911459d92

M3 - Conference Contribution (Conference Proceeding)

BT - 2008 IEEE International Ultrasonics Symposium, Beijing, China, 1/01/00

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