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 frequencyDimensionless frequency

Meshing frequency of 1st-stage fixed-axis gear f11
Meshing frequency of 2nd-stage fixed-axis gear f20.3599
Meshing frequency of planetary f30.0877
Fault frequency of 1st-stage fixed-axis gear fd0.0345
Planetary fault frequency fr0.0024