Research Article
A Study on Coupling Faults’ Characteristics of Fixed-Axis Gear Crack and Planetary Gear Wear
Table 3
Dimensionless characteristic frequencies of gear transmission system (Hz).
| Characteristic frequency | Dimensionless frequency |
| Meshing frequency of 1st-stage fixed-axis gear f1 | 1 | Meshing frequency of 2nd-stage fixed-axis gear f2 | 0.3599 | Meshing frequency of planetary f3 | 0.0877 | Fault frequency of 1st-stage fixed-axis gear fd | 0.0345 | Planetary fault frequency fr | 0.0024 |
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