The natural intermittent impulses created by impeller in case of centrifugal pump, and
reciprocating motions of piston in case of axial pump exhibit strong cyclo-stationary …

Spectral coherence (SCoh) consists of spectral and cyclic frequencies and exhibits unique
merits in simultaneously revealing the resonance frequency band and the fault characteristic …

Spectrum correlation (SC), as a typical demodulation algorithm, has been investigated for
fault extraction by restraining interference components. However, SC ignores the uneven …

Enhanced envelope spectrum (EES) and improved envelope spectrum (IES) generated from
spectral coherence (SCoh) are proven to be more robust fault detection tools than squared …

In this study, unsupervised and supervised pattern recognition were implemented in
combination to achieve real-time health monitoring. Unsupervised recognition (k-means++) …

Resonance demodulation of vibration signals is an essential strategy for rolling bearing fault
diagnosis. However, most resonance demodulation methods focus on searching for only …

Fault components extraction is crucial to machinery fault diagnosis (MFD). As of today, most
existing fault components extraction methods cannot provide an optimal estimation of fault …

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 …

As a powerful algorithm, fast spectral correlation (Fast-SC) is widely used in bearing fault
diagnosis. However, the interference of strong background noise and the existence of …

Rolling bearings are critical and easily damaged components of mechanical equipment. In
practical engineering applications, the collected signals typically contain a large amount of …