A Study on Defect Identification of Planetary Gearbox under Large Speed Oscillation

Table 4

Relationship between the rotational frequency of high speed shaft and the characteristic frequencies of all other components.

Characteristics frequency	Expression
Planet carrier frequency
Meshing frequency of gear pairs 1-2 and 2-3
Meshing frequency of gear pair 4-5
Meshing frequency of gear pair 6-7

stands for rotational frequency of high speed shaft.