Active Control of Sound Transmission Into Three-Dimensional Enclosures - Free Final Year Project's

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Feb 8, 2010

Active Control of Sound Transmission Into Three-Dimensional Enclosures

Active control of sound transmission into three dimensional enclosures is a Mechanical thesis and its aim is to understand active control of sound fields inside a three-dimensional rectangular enclosure. To this end, analytical and numerical studies have been conducted. In the modeling efforts, a spherical wave excitation, which is generated by a noise source located in the near field of the flexible panel, is considered. Piezoelectric patches, which are bonded symmetrically to the top and bottom surfaces of the panel, are used as actuators. You can also Subscribe to FINAL YEAR PROJECT'S by Email for more Projects. Use this for your reference only.

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Microphones located inside and outside the enclosure serve as pressure sensors. The efforts account for panel interactions with both the external sound field and the enclosed sound field, and this feature makes it appealing for model-based active control schemes. The feasibility of implementing two zero spillover schemes for active structural-acoustic control systems has been studied through analysis and experiments. These schemes have been developed to ensure that spillover does not occur outside the control bandwidth.

Author: Al-Bassyiouni, Moustafa



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