The Effect of Parallel-Axis Helix Gear Pair on Wind Turbine Gearbox Vibration Control

Table 11

Gear mesh frequencies of optimal parallel-axis helix stage.

Condition	Input rotation (rpm)	Output rotation (rpm)	Meshing frequency (Hz)
In	9	1015	372.17
Rated	16	1804.16	661.53
Out	18.27	2060	755.33
The actual ratio of the optimal model is 112.76