Application of EMD and SLS in time integration of blasting vibration acceleration

LU Fan-dong;FANG Xiang;CHEN Yong;LI Dong

Journal of Vibration and Shock ›› 2012, Vol. 31 ›› Issue (9) : 90-93.

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PDF(1880 KB)
Journal of Vibration and Shock ›› 2012, Vol. 31 ›› Issue (9) : 90-93.
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Application of EMD and SLS in time integration of blasting vibration acceleration

  • LU Fan-dong, FANG Xiang, CHEN Yong, LI Dong
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Abstract

The analysis of measured differences showed that the distribution of peak vibration velocity value was more regular than that of acceleration under the influence of external factors, and main frequency distribution of vibration acceleration signals was more scattered. A time integration algorithm of acceleration signal was put forward: based on Empirical Mode Deposition, the signal was processed by residual elimination, mean remove and high-frequency de-noising; velocity components by time integration which exist drift phenomena were revised by Least Square method. Research showed: IMF components should be treated separately; to achieve better de-noising effect, threshold vilified coefficient k should be adjusted; Segment Least Square was superior to signal Segment Least Square and Empirical Mode Deposition towards the eliminating ability of drift phenomena. At last, the algorithm was vilified by new global and local parameters in this paper.

Key words

Empirical Mode Deposition / Segment Least Square / Time integration / Evaluation parameters

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LU Fan-dong;FANG Xiang;CHEN Yong;LI Dong. Application of EMD and SLS in time integration of blasting vibration acceleration[J]. Journal of Vibration and Shock, 2012, 31(9): 90-93
PDF(1880 KB)

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