Table 5.
Parameters tuned by the GA for each SAE structure that is considered for each domain of analysis for the stator current signature used in the stacked AE; all technology materials.
| Material | Feature Domain | Hyperparameters | ||
|---|---|---|---|---|
|
L2 Regularization |
Sparsity Regularizatio |
Sparsity Proportion |
||
| Metallic | Time (T2 group) | 2.277 × 10−5 | 7.108 × 10−5 | 0.3228 |
| Frequency (F2 group) | 1.077 × 10−5 | 8.433 × 10−5 | 0.2026 | |
| Time–Frequency (TF2 group) | 2.277 × 10−5 | 7.108 × 10−5 | 0.3228 | |
| Ceramic | Time (T2 group) | 1.675 × 10−5 | 6.944 × 10−5 | 0.4743 |
| Frequency (F2 group) | 1.320 × 10−5 | 4.897 × 10−5 | 0.546 | |
| Time–Frequency (TF2 group) | 1.821 × 10−5 | 4.950 × 10−5 | 0.678 | |
| Hybrid | Time (T2 group) | 2.228 × 10−5 | 2.824 × 10−5 | 0.332 |
| Frequency (F2 group) | 1.625 × 10−5 | 4.365 × 10−5 | 0.391 | |
| Time–Frequency (TF2 group) | 3.384 × 10−5 | 7.621 × 10−5 | 0.4227 | |