Risk Analysis of Coupling Fault Propagation Based on Meta-Action for Computerized Numerical Control (CNC) Machine Tool

Table 6

Comparison of meta-action risk analysis results.

Code	Traditional risk criticality analysis S×E	Ranking	Risk criticality after propagation C(Ai) [27]	Ranking	The proposed method CRC(Ai)	Ranking
A1	1.992	8	18.713	9	1.141	9
A2	58.24	1	452.066	6	60.577	5
A3	24.96	5	683.235	4	65.591	4
A4	1.992	8	14.851	10	0.906	10
A5	37.408	3	928.92	1	120.760	1
A6	16.7	7	735.527	3	67.668	3
A7	37.5	2	511.567	5	50.645	6
A8	36	4	908.612	2	89.953	2
A9	1.992	8	6.413	12	0.391	11
A10	24.528	6	35.376	7	2.830	7
A11	1.5	9	7.5	11	0.315	12
A12	0.996	10	32.804	8	1.509	8