Envelope analysis plays an essential role in fault diagnostics of rotating machinery. One
popular method to attain the envelope spectrum is to integrate the spectral coherence over a …

Rolling element bearings are widely used in machines to support rotating shafts and their
health conditions degrade over time due to harsh working conditions. Once a fault occurs on …

The order-frequency spectral coherence and its integrated spectra (eg improved envelope
spectrum, squared envelope spectrum) are some of the most powerful methods for …

Spectral coherence (SCoh) is one of the most dedicated methods for characterizing the
second-order cyclostationarity of bearing faults. Under the assumption of second-order …

Condition monitoring is usually performed over long periods of time when critical rotating
machines such as wind turbine gearboxes are monitored. There are many potential signal …

The vibration signal of a faulty rolling bearing exhibits typical non-stationarity–often in the
form of cyclostationarity. The spectrum tools often used to characterize cyclostationarity …

Bearing failure is one of the most common reasons of machine breakdowns and accidents.
Therefore, the fault diagnosis of rolling element bearings is of great significance to the safe …

Early fault identification of the rolling element bearings remains difficult because the
repetitive transient signature generated via localized incipient damage is easily submerged …

Wind industry experiences a tremendous growth during the last few decades. As of the end
of 2016, the worldwide total installed electricity generation capacity from wind power …

Cepstrum is a kind of powerful and widely used method in the fields of speech signal
processing, echo signal detection, building acoustics, seismic analysis, condition monitoring …