Research Article

Rolling Bearing Diagnosis Based on Adaptive Probabilistic PCA and the Enhanced Morphological Filter

Table 1

Classification of the morphology operators.

Noise reduction-type operationsFeature extraction-type operations

DilationMG (dilation-erosion)
ErosionWTH (signal-opening)
OpeningBTH (closing-signal)
ClosingPBTH (signal-closing)
FCO (closing, opening)DIF (closing-opening)
FOC (opening, closing)GCO&OC (FCO-FOC)
AVG (average of closing and opening)NWTH (opening-signal)
CMF (average of FCO and FOC)ā€‰