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Investigation on the Noise Separation in Watt Balance Experiments

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Abstract:

The detection of stationary and non-stationary noise in environmental vibration data is an important issue when considering the precision of the Watt balance, an electromechanical apparatus for the new definition of the kilogram in the international system of Units (SI). In this paper, the authors propose a frequency histogram method to find the structure of the stationary noise from large amount of datasets. For the non-stationary noise, the authors propose a wavelet based denoising methods to distinguish the transient events from the background “noise”, to find their duration and content and to identify their location in time.

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Periodical:

Key Engineering Materials (Volumes 381-382)

Pages:

619-622

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.381-382.619

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Online since:

June 2008

Authors:

W. Zeng, Xiang Qian Jiang, P. Scott, L. Blunt

Keywords:

De-Noising, Signal Processing, Vibration Analysis (VA), Watt Balance, Wavelet Transform (WT)

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© 2008 Trans Tech Publications Ltd. All Rights Reserved

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References

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