Publications
Global control of sound radiation from a plate using several adaptive vibration neutralisers with local control schemes
Michael R. F. Kidner, Richard I. Wright (2005)
Proceedings of Acoustics 2005, Busselton, Western Australia, Australia, 9-11 November, p55-60Abstract:
Adaptive tuned vibration neutralisers are common solutions to controlling a single but variable frequency disturbance, such as the interior sound field in a turbo prop aircraft. This paper presents a study of feedback control of several adaptive vibration neutraliser to minimize tonal sound radiation from a modally dense rectangular plate. It is shown that several adaptive vibration neutraliser's using local feedback loops can be managed by a simple global algorithm to minimize the sound radiation from a plate. As an adaptive passive approach is used, each individual adaptive vibration neutraliser can be constrained to be stable and the resulting global system is also stable. Spatially averaged single frequency reductions of up to 22dB are experimentally demonstrated in the radiated field.
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