Ensemble empirical mode decompirison(EEMD) and hilbert transform(HT) are used for gearbox fault diagnosis.Firstly the collected vibration acceleration signal is decomposed by using EEMD,and the former 4 IMFs,their power being greater,are extracted,then the analytic signal obtained by implementing HT for the 4 IMFs is carried out spectrum anslysis.The result shows that the method based on EEMD and HT can avoid mode mixing efficiently,improve the frequency resolution and the diagnosis result for gearbox is ri...
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