WAVELET PACKET AND FRACTAL TECHNOLOGY IN THE APPLICATION RESEARCH OF BLASTING VIBRATION SIGNAL ANALYSIS

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Journal of Vibration and Shock ›› 2011, Vol. 30 ›› Issue (1) : 11-15.

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WAVELET PACKET AND FRACTAL TECHNOLOGY IN THE APPLICATION RESEARCH OF BLASTING VIBRATION SIGNAL ANALYSIS

XIE Quan-min1,2; LONG Yuan1; ZHONG Ming-shou1; LIU Hao-quan1; ZHOU xiang1

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Abstract

Based on the comparability of wavelet packet and fractal technology, wavelet packet and fractal combination technology is proposed to analyze blasting vibration signals. Using wavelet packet to decom-pose blasting vibration signals, through the analysis of the main wavelet packet reconstruction coefficients of blasting vibration signals, the fractal characteristics were verified, through the analysis and comparison to the box-counting dimension of the main wavelet packets, the fractal dimension changes of different blasting vi-bration signal frequency components can be analyzed further. The combination analysis shows that, box-counting dimension changes with wavelet components frequency of blasting vibration signals，so we put the box counting dimension as an important parameter, which reflect frequency characteristic of blasting vi-bration signals. Wavelet packet and fractal technology will provide us new ideas for the fractal features re-search of blasting vibration signals.

Key words

wavelet packet transform / fractal / box-counting dimension / combination analysis

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XIE Quan-min;LONG Yuan;ZHONG Ming-shou;LIU Hao-quan;ZHOU xiang. WAVELET PACKET AND FRACTAL TECHNOLOGY IN THE APPLICATION RESEARCH OF BLASTING VIBRATION SIGNAL ANALYSIS[J]. Journal of Vibration and Shock, 2011, 30(1): 11-15