0
RESEARCH PAPERS

Active Reduction of Radiated Noise From a Baffled Piston Using a Volume Velocity, Feedforward Controller

[+] Author and Article Information
K. Naghshineh, J. W. Kamman

Mechanical and Aeronautical Engineering Department, Western Michigan University, Kalamazoo, MI 49008

V. B. Mason

2564 Greer Road, Palo Alto, CA 94303

J. Vib. Acoust 120(2), 484-490 (Apr 01, 1998) (7 pages) doi:10.1115/1.2893855 History: Received January 01, 1996; Online February 26, 2008

Abstract

A new active noise-control technique has been developed for control of low-frequency sound generated by vibrating surfaces which is based on minimizing the volume velocity. Noise reduction is achieved by distributing an array of control devices over the surface of the radiating structure. Each device consists of a motion-sensing mechanism, an analog control circuit, and a loudspeaker. The loudspeaker is driven such that it reduces the volume velocity of the radiating structure within its close proximity. This paper briefly presents the theory behind this approach as well as controller design issues. Finally, a discussion of the experimental verification of this concept using a 10-in. uniformly vibrating circular plate (i.e., a baffled piston) and a single noise-control device is given. Broadband (50–500 Hz) sound reductions in the range of 10–20 dB were achieved over a wide spatial area.

Copyright © 1998 by The American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.

References

Figures

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In