Fault Diagnosis of Vibrating Screen Bearing Based on Empirical Modal Decomposition Stopping Criterion
In the numerical control vibrating screen running speed greatly increased on the bearing operation stability puts forward higher requirements,the analysis of its fault signal and timely diagnosis is the key.In order to make up for the empirical modal decomposition EMD method still has the problems of modal overlapping,excessive envelope and insufficient envelope,the screen introduces the decomposition stopping criterion to strengthen its iterative calculation,and designs a bearing fault diagnosis method based on the empirical modal decomposition stopping criterion.It is obtained through simulation signal analysis that the method obtains fewer IMF and RMSE values,which is advantageous at the algorithmic time level.The proposed method is robust to decomposition of signals in noisy environments.
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