A feature directly extracted from Intrinsic Mode Functions

摘要

This paper presents a general approach for extracting the specific feature directly from all the Intrinsic Mode Functions (IMF). It is believed that every IMF is possessed with its own physical meaning. However, a detailed signature is a part of the specially determined IMF. Due to various IMF numbers as well as IMF frequency mean deviations, it costs much time to choose the certain IMF, which is also easy to make mistakes. In this study, in order to prevent from making the mistake of frequency mean deviations, a novel algorithm is put forward on the basis of the analysis between adjacent IMFs with the support of the mathematical statistics method. According to the numerical results, the proposed algorithm is in a good conformity to the simulation one.