Research Article
A Novel Method for Identifying Resonance Frequency Band in Weak Bearing Fault Diagnosis of Electric Driving System
Table 3
Operating conditions and states.
| | Serial number | High shaft speed (rpm) | Duration (s) | Motor torque (N·m) | Fault frequency |
| | 1 | 2000 | 10 | 50 | 102.04 Hz | | 2 | 3000 | 10 | 50 | 153.06 Hz | | 3 | 2000 | 10 | 20 | 102.04 Hz | | 4 | 3000 | 10 | 20 | 153.06 Hz | | 5 | 0 ⟶ 5000 ⟶ 0 | 60 | 50 | None |
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