Research Article
Wavelet-Based Feature Extraction in Fault Diagnosis for Biquad High-Pass Filter Circuit
Table 4
Diagnosis rate of fault feature by Morelet wavelet at eight different decomposition scales.
| | Fault classes | A (5) | B (11) | C (15) | D (20) | E (30) | F (40) | G (50) | H (100) |
| | Norm | 40% | 60% | 90% | 95% | 95% | 95% | 95% | 95% | | 1↑ | 70% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | | 1↓ | 15% | 35% | 40% | 40% | 50% | 50% | 50% | 65% | | 4↑ | 25% | 25% | 25% | 50% | 90% | 85% | 95% | 95% | | 4↓ | 40% | 30% | 40% | 40% | 40% | 40% | 40% | 40% | | 2↑ | 70% | 55% | 65% | 75% | 80% | 85% | 85% | 85% | | 2↓ | 40% | 70% | 70% | 70% | 70% | 70% | 70% | 70% | | 3↑ | 65% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | | 3↓ | 70% | 85% | 95% | 95% | 100% | 100% | 100% | 100% | | 2↑ | 85% | 95% | 100% | 100% | 100% | 100% | 100% | 100% | | 2↓ | 90% | 85% | 100% | 100% | 100% | 100% | 100% | 100% | | 1↑ | 95% | 90% | 90% | 100% | 100% | 100% | 100% | 100% | | 1↓ | 25% | 25% | 55% | 70% | 95% | 100% | 100% | 100% |
| | Average | 56.2% | 65.8% | 74.6% | 79.6% | 86.2% | 86.5% | 87.3% | 88.5% |
| | Increment | / | 9.6% | 8.8% | 5% | 6.6% | 0.3% | 0.8% | 1.2% |
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