Contribution Study on Cab Noise Source of Construction Machinery

Jing Tao Zhang; Yi Qi Zhou

doi:10.4028/www.scientific.net/AMM.863.189

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 863Contribution Study on Cab Noise Source of...

Contribution Study on Cab Noise Source of Construction Machinery

Abstract:

NVH control in construction machinery is multi-disciplinary, comprehensive and complex. In order to achieve noise and vibration control, it is necessary to identify the main noise sources, vibration sources and the corresponding characteristics. To establish a relationship between the machine vibration with the noise sources of an excavator cab, the ICA (independent component analysis) method is employed to separate the multi-channel noise signals into statistically independent components, then utilize time-frequency analysis and correlation analysis to determine the distinct independent noise sources. By introducing energy calculation factor and the mixing matrix A, the contribution corresponding to each noise source can be obtained, which can be utilized to determine the main noise sources. Then by introducing simulation, the correction of the contribution can be verified. By analysis and simulation validation, the effectiveness of our proposed method is demonstrated. Finally, the main noise source is found. Our proposed method can offer an effective guidance to the practical engineering.

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Periodical:

Applied Mechanics and Materials (Volume 863)

Pages:

189-194

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.863.189

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Online since:

February 2017

Authors:

Jing Tao Zhang, Yi Qi Zhou*

Keywords:

Contribution Degree, Independent Component Analysis, Multichannel Signal, Source Separation

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