爆破振动信号的小波包分解及各频段的能量分布特征  

Wavelet Packet Decomposition of Blasting Vibration Signals and Energy Distribution Characteristics of Frequency Bands

作　　者：张耀平[1] 曹平[1] 高赛红[2] 

机构地区：[1]中南大学 [2]江西理工大学

出　　处：《金属矿山》2007年第11期42-47,共6页Metal Mine

摘　　要：在结合爆破振动信号具有非平稳、持时短、时域与频域局部化等特性的基础上,通过对爆破振动信号分析技术的简介,得出了小波包分析技术的特点,并在确定小波包分解层数、优选小波包基的同时,运用能量计算公式在MATLAB7.0的语言环境下进行编程,得出了爆破振动信号能量分布的初步规律,为爆破振动信号的进一步研究奠定了理论基础。In light of the characteristics of blasting vibration signals of non-stability,short duration,and time and fre- quency field localization,and through the brief description of the analysis technology of blasting vibration signals,the paper concludes the features of the wavelet analysis technology.Meanwhile,based on the determination of wavelet decomposition layers and the optimal selection of wavelet packet base,energy calculation formula is used in programming in MATLAB 7.0 language environment,and the prel...

关 键 词：小波包分解 最优小波包基 频带 能量分布 

分 类 号：TD235.1[矿业工程—矿井建设]