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http://dx.doi.org/10.5050/KSNVE.2011.21.9.834

Estimation of Vibration Source and Sound Radiation of a Refrigerator Fan by using Measured Acceleration Signals  

Jung, Byung-Kyoo (부산대학교 대학원 기계공학부)
Jeong, Weui-Bong (부산대학교 기계공학부)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.21, no.9, 2011 , pp. 834-841 More about this Journal
Abstract
Obtaining the real exciting force is important for the analysis of structural vibration or sound radiation to represent the actual condition. But in most cases, it is so difficult to get the actual force signals by direct measurement using sensors due to complex geometry. This paper suggests advanced source identification method which can be applied to the prediction of radiated noise considering correlations between measured signals. This method was implemented to the identification of the fan force in the refrigerator. The analysis of structural vibration and radiated noise caused by the fan force was also performed. The comparison between predicted SPL and measured SPL of the radiated noise by the refrigerator fan showed good agreement.
Keywords
Source Identification; Singular Value Decomposition; Auto/Cross Spectrum; Radiated Noise; Refrigerator Fan;
Citations & Related Records
Times Cited By KSCI : 10  (Citation Analysis)
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6 LMS, LMS Virtual.Lab REV9 NVH Standard Training.
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