Remaining Useful Life Prediction of Quay Crane Hoist Gearbox Bearing under Dynamic Operating Conditions Based on ARIMA-CAPF Framework

Table 2

State prediction MAEs of four methods.

Predict time step (group)	Method	1	10	20	30
MAE (%)	ARIMA-CAPF	0.37	0.42	1.08	1.50
	M1	0.36	1.93	3.66	5.84
	M2	0.96	1.77	2.44	3.56
	M3	0.72	1.53	2.10	2.44