第2期 2018年2月
组合机床与自动化加工技术
ModularMachineTool&AutomaticManufacturingTechnique
文章编号：10012265(2018)02008703
D0I:10.13462/j.cnki.mmtamt.2018.02.022
互相关法对主轴振动信号提取的研究
王展",2，朱峰龙1,2，涂伟1,2
No.2 Feb.2018
（1.沈阳建筑大学机械工程学院，沈阳110168；2.高档石材数控加工装备与技术国家地方联合工程实验室，沈阳110168）
摘要：为解决高速主轴因质量不平衡造成的振动，破坏加工精度，影响产品表面质量等问题，对谐波信号、噪声等干扰下主轴同频振动信号进行提取研究。利用LabVIEW虚拟软件模拟均匀白噪声、高斯白噪声、直流电平、各种谐波下等不同类型振动信号，与基准信号互相关运算，提取与主轴同频振动信号幅值和相位。对比主轴系统在实验条件下和模拟条件下的振动响应，验证了互相关算法提取幅值和相位的准确性。实验条件下对比互相关法算法与整周期截取DFT法，结果表明：互相关法算法完整提取振动信息、运算快、准确性高，为求取影响系数、校正质量等提供更准确输入，为高速主轴在线动平衡调控提供重要信息。
关键词：振动信号：互相关算法；影响系数：在线动平衡
中图分类号：TH113.2;TG506
文献标识码：A
The Spindle Vibration Signal Extracting Research Basing on Cross-correlation Algorithm
WANG Zhan'-2,ZHU Feng-long'-2,TU Weil.2
(1. School of Mechanical Engineering, Shenyang Jianzhu University, Shenyang 110168, China ;2. National-lo cal Joint Engineering Laboratory of NC Machining Equipment and Technology of High-Grade Stone , Shenyang 110168，China)
Abstract: In order to solve problems such as machining precision deterioration or the product surface dis-qualification which are caused by the mass unbalance vibration, the spindle synchronization frequency vibra-tion signal abstracting research was made among all kinds of harmonic signals and interference noise signals The extracting to the spindle synchronization vibration signal was done after the cross-correlation algorithm between the standard signal and uniform white noise, gaussian noise and direct current signal basing on the LabVIEW software. The cross-correlation algorithm in extracting the spindle synchronization amplitude and phase was tested under the working and simulating conditions. Under the experiment contrast between the cross-correlation algorithm and the whole cycle capture DFT algorithm, results indicated that the cross-corre-lation algorithm could completely extract the vibration information, stands faster operation and higher accura-cy. The influence coefficient magnitude, correcting weight and some other parameters could be achieved by applying the cross-correlation analysis. Such achievements hold a significant meaning in providing informa-tion to the online dynamic balancing control.
Key words: the vibration signal; cross-correlation algorithm; influence coefficient; online dynamic balan cing
0引言
测量高速主轴振动过程申，传感器探测到的振动信号有各种频率成分的谐波信号、主轴系统本身共振、环境、噪声等，特别是当微弱振动信号不易测出时，干
扰信号会掩盖掉主轴同频振动信号1]，这对于研究由于质量不平衡引起的主轴振动造成了极大困难。为将主轴同频振动信号在微弱时能快速、精确检测和提取要求测试系统拥有良好选频、准确相位信息等特性2]。基频信号幅值、相位提取方法有快速傅里叶变换
收稿日期：2017-03-16；修回日期：2017-05-22
*基金项目：辽宁省自然科学基金（201602638）；沈阳市科技计划项目（F16-096-1-00）；辽宁省教育厅科学研究项目（LJZ2016013）；沈阳建筑
大学重点实验室开基金（SJSC-2015-14）；辽宁省自然科学基金(20170540745）
作者简介：王展(1984一），男，辽宁鞍山人，沈阳建筑大学副教授，硕士生导师，博士，研究方向为高速主轴在线动平衡方面的研究，（E－mail)ju
en1126@163.com；通讯作者：朱峰龙（1992一），男，内蒙古赤峰人，沈阳建筑大学硕士研究生，研究方向为高速主轴在线动平衡，（E-万有数据4069265@163.com。