Condition-Based Maintenance Optimization for Motorized Spindles Integrating Proportional Hazard Model with SPC Charts

Table 6

Estimation results for the selected PHMs.

Model						K-S
			(RMS)	(kurtosis)	(crest factor)
1	1.7634	162.2420	—	—	—	0.3028	0.4551
2	2.0046	151.3602	1.0768	—	—	0.2190	0.8255
3	2.2251	124.7858	—	0.0822	—	0.2595	0.6442
4	2.0661	168.8726	—	—	0.1218	0.2846	0.5302