Research on Feature Extraction of Performance Degradation for Flexible Material R2R Processing Roller Based on PCA

Table 1

Feature vector table of roll vibration signal for flexible material R2R system.

Num	Eigenvector type	Eigenvector expression
1	Average value of vibration signal
2	RMS of vibration signal
3	Kurtosis of vibration signal
4	FC (frequency domain parameters)
5	RMSF (frequency domain parameters)
6	RVF (frequency domain parameters)
7	The energy of IMF1
8	The energy of IMF2
9	The energy of IMF3
10	The energy of IMF4