The Application of Vibration Signal Model and Divergence in Fault Diagnosis of Rolling Bearing
On the basis of analyzing the vibration signal characteristics of rolling machinery rolling bearings,the theoretical model of the bearing vibration signal is first established and verified by experiments.Then the divergence value between the sample to be diagnosed and the vibration signal model under various typical conditions is calculated.The comparison of the degree value shows the bearing fault location and the change of the fault degree.Finally,the validity and practical value of this method are verified by analyzing the data of the test bench and the data of the experimental prototype of the wind farm.The diagnosis method adopts the bearing with certain stability.The characteristic frequency of the local fault is a characteristic parameter,and it does not need to process the original vibration signal,nor does it require a large number of signal samples with typical faults as basic support.These three characteristics determine the real-time and robustness of this diagnostic method.Superiority,so it is very suit-able for on-line monitoring and automatic fault diagnosis of rolling machinery rolling bearings.
Rolling BearingFault Signal ModelDivergenceFault Characteristic Frequency
万方数据
维普
