基于自适应VMD-MPE算法的矿山爆破地震波信号降噪方法研究

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摘要实测矿山爆破地震波信号含有大量高频噪声，一定程度上掩盖了真实信号特征，不利于爆破有害效应分析。为了有效降低实测信号的噪声成分，提出了基于自适应VMD-MPE算法的矿山爆破地震波信号降噪方法。将原信号进行变分模态分解（VMD）获得本征模态函数（IMF），利用能量差参数ξ自适应确定模态数K，对IMF分量进行多尺度排列熵（MPE）的随机性检测，准确区分出真实IMF和噪声IMF，去除原信号中的噪声IMF以达到降噪目的。对3组实测矿山爆破地震波信号进行降噪处理，结果表明该模型能够较好地去除高频噪声，保留了信号真实成分；其降噪效果均优于EEMD-MPE、CEEMDAN-MPE算法，验证了自适应VMD-MPE降噪方法的有效性。
关键词：矿山爆破；地震波信号；自适应VMD算法；多尺度排列熵

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	彭亚雄1
	刘广进1
	苏莹1
	陈春晖2
	刘运思1

关键词 ：矿山爆破, 地震波信号, 自适应VMD算法, 多尺度排列熵

Abstract：The measured seismic wave signal in mine blasting contains a lot of high frequency noise, which covers up the real signal characteristics to some extent, and it is not conducive to analyzing the harmful effects of blasting. In order to effectively reduce the noise component in measured signal. A denoising method of mine blasting seismic wave signal based on adaptive VMD-MPE algorithm is proposed. The intrinsic mode function (IMF) was obtained by variational mode decomposition (VMD) for the original signal, and the mode number K can be adaptively determined by the energy difference parameter ξ. The IMF was randomly detected by multi-scale permutation entropy (MPE) to accurately distinguish the real IMF and the IMF noise, and the IMF noise was removed to achieve the purpose of denoising. The processing of three groups of measured mine blasting seismic wave signals shows that the model can effectively remove the high frequency noise and retain the real component of the signals. Moreover, its denoising effect is better than that of EEMD-MPE and CEEMDAN-MPE algorithms, which verifies the effec-tiveness of the adaptive VMD-MPE denoising method.
Key words: Mine blasting; Seismic wave signal; Adaptive variational mode decomposition; Multi-scale permutation entropy

Key words： Mine blasting Seismic wave signal Adaptive variational mode decomposition Multi-scale permutation entropy

收稿日期: 2021-03-22 出版日期: 2022-07-15

引用本文:

彭亚雄1，刘广进1，苏莹1，陈春晖2，刘运思1. 基于自适应VMD-MPE算法的矿山爆破地震波信号降噪方法研究[J]. 振动与冲击, 2022, 41(13): 135-141.
PENG Yaxiong1, LIU Guangjin1, SU Ying1, CHEN Chunhui2, LIU Yunsi1. Noise reduction method of mine blasting seismic wave signal based on adaptive VMD-MPE algorithm. JOURNAL OF VIBRATION AND SHOCK, 2022, 41(13): 135-141.

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http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2022/V41/I13/135

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