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

Table 4

Gear mesh frequencies of original parallel-axis helix stage.

Condition	Input rotation (rpm)	Output rotation (rpm)	Meshing frequency (Hz)
In	8.989	1015	524.42
Rated	16	1806.72	933.47
Out	18.243	2060	1064.33
The actual ratio of the original model is 112.92