Research On Vibration Monitoring And Analysis Method Of Rolling Bearing

The vibration signal of rolling element contains abundant fault information,it can reflect the running state of the bearing,so the acquisition and analysis of the condition monitoring is crucial to the vibration signal of rolling bearing.This paper adopts the data acquisition and analysis system of vibration test based on LabVIEW of rolling bearing,with the vibration data acquisition card provided by national instruments company and sensors,acquire the vibration signal of rotor system to the computer,and then analyze the data by computer.By combining the hardware and software of the data acquisition,collection of the vibration signal in the sensor can be transformed into the fault feature information we need.The data acquisition and analysis system based on LabVIEW is realized by software,so it is convenient to update,which can modify the original function and add the new function to the system.Based on the research of vibration monitoring method of rolling bearing,the data acquisition and analysis system of rolling bearing vibration monitoring based on Lab VIEW is developed in this paper.The main research work of this paper is as follows:(1)First,propose to divide the interval of rolling bearing vibration in rotating machinery,and the rolling bearing occurred spectrum characteristics of different fault damage degree are summarized,and then introduced the amplitude modulation phenomenon of rolling bearing vibration signal,and its application in spectrum analysis.(2)Secondly,we study the transient information of rotating machinery in the process of analysis of the order tracking technique based on,and according to the analysis of rolling bearing vibration signal acquisition system design and development process of Lab VIEW,and then test the function of each function module of the virtual instrument,verify the correctness of the function,in order to achieve the desired effect.(3)Finally,the rolling bearing vibration monitoring data acquisition and analysis system is applied to the vibration of CUT-2 rotor bearing test rig(rolling bearing),online data acquisition and analysis of vibration signal of rolling bearing of the test bench,the online real-time monitoring to extract the fault feature information and operation state,in order to verify its practicality.