Skip to main content

A compact active control implementation for axial cooling fan noise

Buy Article:

$12.00 plus tax (Refund Policy)

A multi-channel active control system has been applied to the reduction of free-field tonal noise from a small axial cooling fan, typical of those used in personal computers and other technology. Emphasis has been placed on the development of a compact, practical system, with loudspeakers and error microphones located close to the fan, and which is capable of achieving significant global attenuations for the first four harmonics of the blade passage frequency. In addition, the reference sensor and loudspeakers used have been selected based upon their relatively low cost. Experimental results are presented for five different actuator combinations and tonal meansquare pressure reductions are calculated in each case. A comparison of the performance of each configuration indicates that consistent global control of the four targeted harmonics may be achieved with three control channels.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
No Metrics

Keywords: 12.3.4; 38.2

Document Type: Research Article

Affiliations: The Pennsylvania State University

Publication date: 2003-11-01

More about this publication?
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more