Root Crack Identification of Sun Gear in Planetary Gear System Combining Fault Dynamics with VMD Algorithm

Table 1

Design parameters of planetary gear system.

Types of gears	Ring gear	Planet gear	Sun gear
Number of teeth	100	36	28
Module (mm)	1	Pressure angle (°)	20
Tooth width (mm)	10	Material	Steel
Young’s modulus (Pa10^11)	2.07	Siméon Denis Poisson	0.29
Input speed (rpm)	1800