Reliability Modelling of CNC Machine Tools Based on the Improved Maximum Likelihood Estimation Method

Table 5

Test parameters for three-factor and three-level orthogonal simulation conditions.

Number	Ideal parameters		Test time; T/h	MRCT
	β	η
1	0.8	3000	6000	0.68
2	0.8	4500	5000	0.82
3	0.8	6000	4000	0.90
4	1.2	3000	5000	0.71
5	1.2	4500	4000	0.87
6	1.2	6000	6000	0.86
7	1.6	3000	4000	0.77
8	1.6	4500	6000	0.77
9	1.6	6000	5000	0.91