Abstract： If the ratio of signal’s energy and frequency is much larger than some value, this paper presents the new integrated method of Empirical Mode Decomposition and Independent Component Analysis. It can seprate the Overlapped information, decompose accurately the Intrinsic Mode Functions. recover the character of the Intrinsic Mode Function, and perfect the deficiency of Empirical Mode Decomposition’s capability. This method can ensure the validity of Empirical Mode Decomposition. The feasibility of this method is demonstrated by the application of simulated signals and practical signals. The results show that this method has wide application prospect in the condition signal procession and fault diagnosis of mechanical equipment.
2009, Vol. 28 
