X Jiang et al 2007 Meas. Sci. Technol. 18 1487 doi:10.1088/0957-0233/18/5/039
X Jiang1, W Zeng1, I M Smith2, P Scott1,3 and F-X Malétras2
Show affiliationsThe detection of transient behaviour 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 have developed a two-stage method for the analysis of large numbers of datasets containing measured vibration data. In the first stage, all the datasets are explored and statistical methods used to identify those datasets that potentially contain transient events. In the second stage, the transient events are separated from the background noise. This stage is implemented using a biorthogonal wavelet technique with Bayesian denoising.
07.10.Lw Balance systems, tensile machines, etc.
07.07.Df Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing
Issue 5 (May 2007)
Received 2 October 2006, in final form 2 February 2007
Published 27 March 2007
X Jiang et al 2007 Meas. Sci. Technol. 18 1487
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