摘要
在说明仅用一种分形维数来描述岩石爆破振动信号不足的基础上,利用多分形分析的方法对典型岩石爆破振动信号的奇异谱进行分析。给出了基于小波变换的多分形谱计算方法,并将此方法应用到岩石爆破振动信号中,讨论了信号的多分形特征,认为信号的突变主要集中在α<1的奇异指数上,而信号的奇异指数也主要集中在0 .2 8～0 .72之间;
The result was inaccurate and incomprehensive if only one fractal dimension was used to analyze blasting vibration signal of rock;and the multifractal was used to analyze singular spectrum. The method based on wavelet transform was discussed in the paper. Then a typical blasting vibration signal of rock was analyzed with the method. At the same time, the multifactal features of the signal were discussed. And the sudden changes of the signal are considered to center on α <1, and the singular exponent α of the signal ranges from 0.28 to 0.72. An important conclusion is provided that the blasting vibration signal is almost singular everywhere though the signal is continuous.
出处
《解放军理工大学学报（自然科学版）》
EI
2005年第2期158-161,共4页
Journal of PLA University of Science and Technology(Natural Science Edition)
