Active noise control in cars based on utilising ElectroMechanical Film (EMFi) based actuators: (invited)

Hannu Nykänen, Marko Antila, Jukka Lekkala, Roberto Aimasso, Paolo Delzanno, Görgun Necati

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

    Abstract

    In the European Union funded FACTS project the development of Active Noise Control (ANC) systems for vehicles utilising distributed actuators based on ElectroMechanical Film (EMFi) technology was started. Two car demonstrations were built, one for the "traditional" active engine order noise control and one for the attenuation of broad band noise radiation of the dash panel, caused by the vibrations of the panel. Results show that noise reduction using membrane mode EMFi actuators is fully effective at higher engine orders (the noise peaks are reduced to background noise level), when the frequencies are above 200 Hz and the noise levels are reasonable (below 80 dB). Also the broad band noise radiation caused by the dash panel vibrations could be attenuated some 5 dB in the frequency range 150 - 300 Hz, but some amplification was present at higher frequencies
    Original languageEnglish
    Title of host publicationInternoise 2001: Proceedings of the 2001 International Congress and Exhibition on Noise Control Engineering
    PublisherInstitute of Noise Control Engineering
    Pages1564-1569
    Number of pages6
    ISBN (Print)90-806554-2-2, 90-806554-3-0
    Publication statusPublished - 2001
    MoE publication typeB3 Non-refereed article in conference proceedings
    EventInternational Congress and Exhibition on Noise Control Engineering, Inter-Noise 2001 - The Hague, Netherlands
    Duration: 27 Aug 200130 Aug 2001

    Conference

    ConferenceInternational Congress and Exhibition on Noise Control Engineering, Inter-Noise 2001
    CountryNetherlands
    CityThe Hague
    Period27/08/0130/08/01

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  • Cite this

    Nykänen, H., Antila, M., Lekkala, J., Aimasso, R., Delzanno, P., & Necati, G. (2001). Active noise control in cars based on utilising ElectroMechanical Film (EMFi) based actuators: (invited). In Internoise 2001: Proceedings of the 2001 International Congress and Exhibition on Noise Control Engineering (pp. 1564-1569). Institute of Noise Control Engineering.