Sensor scheme design for active structural acoustic control

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    Efficient sensing schemes for the active reduction of sound radiation from plates are presented based on error signals derived from spatially weighted plate velocity or near-field pressure. The schemes result in near-optimal reductions as compared to weighting procedures derived from eigenvector or singular vector analysis of the radiation operator. Efficient control configurations are suggested using a, possibly analog, front-end implementing a bank of spatial weighting functions and a digital controller with a minimized number of input and output channels. The performance of different weighting functions is compared, as well as the performance of different frequency-dependent filtering functions. Design rules are given for the sensor spacing, the number of weighting functions, the number of actuators, and the corresponding controller dimensionality.
    Original languageUndefined
    Article number10.1121/1.1286514
    Pages (from-to)1037-1045
    Number of pages9
    JournalJournal of the Acoustical Society of America
    Issue number3
    Publication statusPublished - Sep 2000


    • IR-62315
    • EWI-12782

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