基于EMD及FFT的滚珠丝杠副振动信号分析  

Vibration Signal Analysis of Ball Screw Pair Based on EMD and FFT

作　　者：姚玲峰[1] 宋超[1] 肖世德[2] YAO Lingfeng;SONG Chao;XIAO Shide(Mechanical Department,Chengdu textile college,Chengdu 611731,China;School of Mechanical Engineering,Southwest Jiaotong University,Chengdu 610031,China)

机构地区：[1]成都纺织高等专科学校机械工程学院,成都611731 [2]西南交通大学机械工程学院,成都610031

出　　处：《机械工程师》2019年第8期88-89,94,共3页Mechanical Engineer

基　　金：四川省教育厅自然科学类科研项目(12ZB003)

摘　　要：为了监测滚珠丝杠副的健康状况,对采集到的滚珠丝杠副振动信号做EMD分解,得到包含原始信号固有特征的若干IMF分量,对选定的IMF分量做FFT得到对应的频谱图,从频谱图中可以提取出滚珠丝杠副的特征频率,根据特征频率可以初步判断出滚珠丝杠副的健康状态。由分析可知,利用EMD和FFT对分析非平稳、非线性的滚珠丝杠副离散振动信号是有效的。In order to monitor the health status of ball screw pairs,EMD decomposition is used to perform the collected vibration signals analysis of ball screw pairs,and several IMF components containing the inherent characteristics of the original signals are obtained.The corresponding spectrum is obtained by FFT of selected IMF components.The characteristic frequency is extracted from the spectrum diagram.According to the characteristic frequency,the health state of ball screw pair could be judged preliminarily.As a result of analysis,EMD and FFT are effective in analyzing non-stationary and non-linear discrete vibration signals of ball screw pairs.

关 键 词：滚珠丝杠副 振动信号 EMD分解FFT 

分 类 号：TH132.1[机械工程—机械制造及自动化]