Rolling bearings fault diagnosis based on energy operator demodulation approach

The Hilbert transfer is usually used for demodulated resonance analysis (DRA). But in this paper an energy operator demodulation method (EODM) is used for DRA to extract features of rolling bearings for fault diagnosis. The principle of DRA is first introduced. Then the energy operator and EODM are discussed in detail. Finally, experiments on 406 rolling bearings are carried out to analyze the high-frequency resonance signal with EODM. The results show that EODM is an effective method in rolling bearing fault diagnosis.