Research Article

Roller Bearing Fault Diagnosis Based on Adaptive Sparsest Narrow-Band Decomposition and MMC-FCH

Table 3

Statistical parameters.

Frequency domain statistical parametersTime-domain statistical parameters

MeanSkewnessSpectral amplitude meanSpectral root 4/2-moment ratio
Root mean squareKurtosisSpectral amplitude standard deviationSpectral standard deviation frequency
Square root amplitudeCrest factorSpectral amplitude skewnessSpectral frequency skewness
Mean amplitudeClearance factorSpectral amplitude kurtosisSpectral frequency kurtosis
Maximum peakShape factorSpectral gravity frequency
Standard deviationCrest factorSpectral root mean square frequency