Open Access
Review
Table 5
Comparison of multi-source signal fusion strategies in fault diagnosis of nuclear power pumps.
| Fusion strategy | Signal types | Key features | Accuracy improvement (%) | Application scenarios |
|---|---|---|---|---|
| Vibration-current fusion | Vibration and motor current | WPT energy entropy, kurtosis | 96.8(↑11.5) | Concurrent fault diagnosis [15] |
| Acoustic emission–thermal imaging fusion | Acoustic emission & infrared thermography | Acoustic emission RMS value, thermal gradient | 94.2(↑17.3) | Early crack detection [40] |
| Pressure–flow fusion | Pressure pulsation & flow fluctuation | Residual function features | 91.7 (↑8.9) | Diagnosis of impeller, bearing, and pump body seal faults [41] |
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