Aiming at problems that traditional fault diagnosis methods need to extract features manually and the recognition rate is low, a VMD-CWT-CNN model based on variational modal decomposition ( VMD) and continuous wavelet transform (CWT) combined with convolutional neural network (CNN) ...
A hybrid model based on VMD, CNN and SVM was proposed for rolling bearings diagnosis.The performance of VMD on an analog signal with DC component and noise is studied.Overlap sampling for one-dimensional data reconstructed from IMF components.The validity of the method is verified by different ...