Employment of Double-Panel Casing for Active Reduction of Device Noise

Abstract:

The idea of active casing is an approach to reduce device and machinery noise by controlling vibration of casing walls. The sound insulation efficiency of this technique for a single-plate casing was confirmed by the authors in previous publications. However, under specific circumstances, a dedicated double-panel structure can yield even higher noise reduction. The aim of this paper is to propose and evaluate by means of laboratory experiments the performance of a double-panel casing in comparison with a single-panel casing. An adaptive control strategy based on the Least Mean Square (LMS) algorithm is used to update control filter parameters. A low-frequency noise in the range up to 250 Hz is considered. Obtained results are reported, discussed, and conclusions for future research are drawn.

• Periodical: Solid State Phenomena (Volume 248)
• Pages: 27-34
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.248.27
• Online since: March 2016
• Authors: Stanislaw Wrona*, Marek Pawelczyk
• Keywords: Active Casing, Active Noise Control, Active Structural Acoustic Control, Active Vibration Control, Adaptive Control, Double Panel

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