VMD方法在紫金山金铜矿爆破振动信号中的应用

Application of VMD Method in Blasting Vibration Signal of Zijinshan Gold and Copper Mine

随着现代计算机理论技术的发展,许多学者基于计算机理论技术对短时非线性信号分解方面的研究也越来越成熟。变分模态分解(VMD)方法以其具有数学逻辑性强,抗噪性明显的优势已在其他振动领域得到广泛的发展。本文介绍了变分模态分解的基本理论,采用仿真信号对变分模态分解方法进行测试,并与经验模态分解方法进行对比分析,研究结果表明变分模态分解具有精准的识别能力,最后将此方法应用到紫金山金铜矿实测爆破振动信号中,取得了良好的效果。

With the development of modern computer theory and technology,many scholars based on computer theory and technology on short-term nonlinear signal decomposition research is more and more mature.Variational mode decomposition(VMD)method has been widely developed in other vibration fields because of its advantages of strong mathematical logic and obvious noise resistance.This paper introduces the basic theory of variational mode decomposition,tests the variational mode decomposition method with simulation signal,and compares it with empirical mode decomposition method.The research results show that the variational mode decomposition method has accurate identification ability.Finally,this method is applied to the actual blasting vibration signal of Zijinshan Gold and Copper Mine,and good results are obtained.