Numerical modeling of alumpedacoustic source actuated by a piezoelectric stack device that is driven by a switching amplifier
conference paper
This paper studies an acoustic source with a relatively small thickness and high bending stiffness. Piezoelectric actuators are used to drive the moving component of the acoustic source. In the current study, a lumped model is used to represent the acoustic source that is excited by a piezoelectric stacked actuator. The equivalent electrical circuit of the lumped acoustic source can directly be connected to the electrical circuit of a switching amplifier. Various methods are used to estimate the radiation impedance of the acoustic source. The effectiveness of these methods is investigated when they are used in combination with the equivalent electrical circuit of the lumped acoustic source, the actuator and the amplifier. Finally, result of a numerical finite element simulation is compared with the results of the fully-lumped equivalent electrical circuit. Copyright © by International Institute of Acoustics & Vibration. All rights reserved.
Topics
Radiation impedanceThin acoustic sourceAcoustic impedanceAcoustic noise measurementAcousticsElectric network parametersEquivalent circuitsPiezoelectricityAcoustic sourcesElectrical circuitEquivalent electrical circuitsFinite element simulationsPiezoelectric stackPiezoelectric stacked actuatorsRadiation impedanceSwitching amplifiersPiezoelectric actuators
TNO Identifier
844230
ISSN
9781510868458
Source
25th International Congress on Sound and Vibration 2018: Hiroshima Calling, ICSV 2018, 8 July 2018 through 12 July 2018, 8, pp. 4683-4690.
Publisher
International Institute of Acoustics and Vibration, IIAV
Source title
25th International Congress on Sound and Vibration 2018, ICSV 2018: Hiroshima Calling
Pages
4683-4690
Files
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