Computed Order Tracking and its Application to NVH

Xiao Bing Wu

doi:10.4028/www.scientific.net/AMM.321-324.692

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 321-324Computed Order Tracking and its Application to NVH

Computed Order Tracking and its Application to NVH

Abstract:

Analysis of vibration or acoustic signals from rotating machines is often preferred in terms of order spectra rather than frequency spectra. An order spectrum gives the amplitude and/or the phase of the signal as a function of harmonic order of the rotation frequency. Order tracking requires sampling of the vibration signal at constant angular increments and hence at a rate proportional to the shaft speed. Most commercial software for signal processing has the built-in capability of computed order tracking, such as the 7702 order tracking software of B&K Pulse. The order tracking result of interior noise of cab is presented in this paper. From order tracking analysis on the noise of interior cab, we found that the noise mainly comes from the second order excitation of engine, and that the overall noise with respect to engine speed

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Periodical:

Applied Mechanics and Materials (Volumes 321-324)

Pages:

692-696

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.321-324.692

Citation:

Cite this paper

Online since:

June 2013

Authors:

Xiao Bing Wu

Keywords:

Angle Interpolation, Computed Order Tracking, Constant Angle Sampling, Rotary Vector

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