Table 2 The result of PCA and description of feature vectors.
From: Defect monitoring method for Al-CFRTP UFSW based on BWO–VMD–HHT and ResNet
Name | Description | Accumulated contribution rate | Eigenvalue |
|---|---|---|---|
Vector 1 | 22.5 kHz frequency band | 40.5% | 12.35 |
Vector 2 | 24.0 kHz frequency band | 61.7% | 6.53 |
Vector 3 | 18.4 kHz frequency band | 77.8% | 4.96 |
Vector 4 | 20.6 kHz frequency band | 87.1% | 2.84 |
Vector 5 | 15.6 kHz frequency band | 92.3% | 1.60 |
Vector 6 | 17.2 kHz frequency band | 95.5% | 0.99 |
– | 16.3 kHz frequency band | 96.6% | 0.31 |
