Research on Fault Evolution Feature Extraction and Identification of Sun Gear Cracks in Planetary Gearbox Based on Volterra High-Order Kernel Generalized Frequency Response Graphic Analysis

Table 1

Planetary gearbox configuration parameters I.

Parameter	Module	Number of solar gear teeth	Number of planetary gear teeth	Number of annular gear teeth	Input torque
	m/mm				/Hz
Digital quantity	2	18	27	72	15