Wigner polyspectra: higher-order spectra in time varying signal processing

1991 ◽  
Author(s):  
J.R. Fonollosa ◽  
C.L. Nikias
Keyword(s):  
Signal Processing ◽  
Higher Order ◽  
Time Varying ◽  
Higher Order Spectra

Time-varying higher order spectra

1991 ◽  
Author(s):  
Boualem Boashash ◽  
Peter O'Shea
Keyword(s):  
Higher Order ◽  
Time Varying ◽  
Higher Order Spectra

Faults Diagnosis in Rotating Machines Using Higher Order Spectra

2014 ◽  
Author(s):  
Akilu Yunusa-Kaltungo ◽  
Jyoti K. Sinha
Keyword(s):  
Signal Processing ◽  
Condition Monitoring ◽  
Transverse Crack ◽  
Higher Order ◽  
Vibration Response ◽  
Rotating Machines ◽  
Vibration Signals ◽  
Faults Diagnosis ◽  
Higher Order Spectra ◽  
Recent Attention

Higher order spectra (HOS) and higher order coherences (HOC) are two classes of higher order signal processing tools that have gained recent attention in the area of rotating machines’ condition monitoring (CM). Hence, the current study compares and presents the results of the performances of both HOS and HOC in the diagnosis of rotating machines’ faults, through the numerically simulated vibration signals and the experimentally measured vibration response on a rotating rig with healthy condition and the rotor with a transverse crack.

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