Abstract:Abstract: Application on the characteristics of that the ensemble empirical mode decomposition (EEMD) can effectively suppress the phenomenon of mode mixing, and according to the product of the energy density of intrinsic mode functions (IMFs) from the white noise by EMD and the corresponding averaged period of IMFs is a constant, an automatic algorithm of choose IMF components to reconstruct signal was designed, and an adaptive de-noising method based on EEMD for vibration signal was proposed. The simulate signal and bearing vibration signal were used to test and the results showed that the EEMD-based noise cancellation method presented here had feasibility and validity.