Application Acoustic Emission and Empirical Mode Decomposition to Faults Diagnosis of Bearing
Hui Li · Proceedings of the CSEE · 2006
A novel method to fault diagnosis of bearing based on acoustic emission,empirical mode decomposition(EMD)and envelope spectrum is presented.EMD method is self-adaptive to non-stationary and non-linear data processing.Firstly,the experimental data is decomposed into a finite and often small number of intrinsic mode functions,using the empirical mode decomposition.Then the envelope spectrum is applied to the selected intrinsic mode function which stands for the bearing faults.The basic principle is introduced in detail.The EMD is applied in the research of the faults diagnosis of the bearing.The experimental results show that this method based on acoustic emission,EMD and envelope spectrum can effectively diagnosis the faults of bearing.