Numerical modeling of a lumped acoustic source actuated by a piezoelectric stack device that is driven by a switching amplifier

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    Abstract

    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.

    Original languageEnglish
    Title of host publication25th International Congress on Sound and Vibration 2018 (ICSV 25)
    Subtitle of host publicationHiroshima Calling
    PublisherInternational Institute of Acoustics and Vibration (IIAV)
    Pages4683-4690
    Number of pages8
    ISBN (Electronic)9781510868458
    Publication statusPublished - 1 Jan 2018
    Event25th International Congress on Sound and Vibration ICSV 2018 - The Grand Prince Hotel Hiroshima, Hiroshima, Japan
    Duration: 8 Jul 201812 Jul 2018
    Conference number: 25
    https://www.iiav.org/icsv25/

    Conference

    Conference25th International Congress on Sound and Vibration ICSV 2018
    Abbreviated titleICSV 2018
    CountryJapan
    CityHiroshima
    Period8/07/1812/07/18
    Internet address

    Keywords

    • Radiation impedance
    • Thin acoustic source

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  • Cite this

    Tajdari, F., Berkhoff, A. P., & de Boer, A. (2018). Numerical modeling of a lumped acoustic source actuated by a piezoelectric stack device that is driven by a switching amplifier. In 25th International Congress on Sound and Vibration 2018 (ICSV 25): Hiroshima Calling (pp. 4683-4690). International Institute of Acoustics and Vibration (IIAV).