Research Article
Bearing Condition Recognition and Degradation Assessment under Varying Running Conditions Using NPE and SOM
Table 1
Bearing feature generation.
| Time domain features | Frequency domain features |
| Mean square |
amplitude at rotating frequency | Kurtosis | amplitude at | Mean | amplitude at BPFI | Skewness | amplitude at 2BPFI | Peak value | amplitude at BPFO | Rms | amplitude at 2BPFO | Waveform factor | amplitude at FTF | Crest factor | amplitude at 2FTF | Impulse factor | amplitude at BSF | Clearance factor | amplitude at 2BSF |
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