Fault Diagnosis Method of the Construction Machinery Hydraulic System Based on Artificial Intelligence Dynamic Monitoring

Table 1

Characteristic parameters of hydraulic vibration signals.

	Xmax	Xff	Xms	Sf	Cf	If	CLf
Normal	0.6402	0.7153	0.6287	0.4326	0.6482	0.6447	0.64471	0.4960
Loose ball head	0.4034	0.3758	0.3674	0.3377	0.4320	0.4181	0.4193	0.4617
Worn flow plate	0.3373	0.3886	0.6298	0.6240	0.3280	0.3096	0.3121	0.3478
Loose boot failure	0.4457	0.3914	0.6147	0.6140	0.4004	0.4662	0.4654	0.3633
Cylinder wear	0.5444	0.6166	0.4797	0.4546	0.3768	0.4488	0.4415	0.5101
Cylinder wear	0.4418	0.5355	0.3074	0.2877	0.5215	0.4776	0.4758	0.7458
Leakage	0.5526	0.4656	0.4630	0.4685	0.5285	0.5818	0.5867	0.4351