Piezoelectric air transducer for active noise control

Baomin Xu, Qiming Zhang, V. D. Kugel, Leslie E. Cross

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    6 Scopus citations

    Abstract

    A new type of piezoelectric air transducer has been developed for active noise control and other air acoustics applications. The transducer is based on the composite panel structure of a bimorph-based double amplifier, that is, two parallel bimorphs or bimorph arrays with a curved cover plate as an active face attached to the top of the bimorphs. The electro- mechanical and electro-acoustic properties of the double amplifier structure and the transducer are investigated in this paper. The displacement of the cover plate of the double amplifier structure can reach millimeter scale with a relatively low driving voltage, which is more than ten times larger than the tip displacement of bimorphs. The sound pressure level (SPL) of the transducer can be larger than 90 dB (near field) in the frequency range from 50 to 1000 Hz and be larger than 80 dB (far field) from 200 Hz to 1000 Hz, with the largest value more than 130 dB (near field). Because of its light weight and panel structure, it has the potential to be used in active noise control.

    Original languageEnglish (US)
    Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
    EditorsInderjit Chopra
    Pages388-398
    Number of pages11
    StatePublished - Jan 1 1996
    EventSmart Structures and Materials 1996: Smart Structures and Integrated Systems - San Diego, CA, USA
    Duration: Feb 26 1996Feb 29 1996

    Publication series

    NameProceedings of SPIE - The International Society for Optical Engineering
    Volume2717

    Other

    OtherSmart Structures and Materials 1996: Smart Structures and Integrated Systems
    CitySan Diego, CA, USA
    Period2/26/962/29/96

    All Science Journal Classification (ASJC) codes

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics
    • Computer Science Applications
    • Applied Mathematics
    • Electrical and Electronic Engineering

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  • Cite this

    Xu, B., Zhang, Q., Kugel, V. D., & Cross, L. E. (1996). Piezoelectric air transducer for active noise control. In I. Chopra (Ed.), Proceedings of SPIE - The International Society for Optical Engineering (pp. 388-398). (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 2717).