科研之友
微信
新浪微博
Facebook
分享链接
摘要
In analyzing signals from a wind turbine gearbox this paper suggests a new signal processing procedure named as CMF-EEMD method which is formed by applying conventional EEMD to a new type of combined mode CMF). This CMF consists of a low frequency CMF, denoted as C-L, and a high frequency CMF, denoted as C-h. Then it optimizes the amplitude of the added noise in decomposing C-h and C-L using EEMD. Finally, it calculates cyclic autocorrelation CAF) for every characteristic IMF from EEMD. The proposed procedure is applied to analyze the multi-faults of a wind turbine gearbox and the results confirm better performances in resolving different signal components by the proposed method than that from the cyclic autocorrelation CAF) of a direct EEMD analysis.
