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

Table 3

Attribute comparison of fault analysis methods.

Method	Structural characteristic analysis	Analysis with propagation	Analysis with hierarchy	Analysis with uncertainty	Comprehensive consideration of analysis indicators
FTA	×	×	√	×	×
FMEA	×	×	√	√	×
Petri net	×	√	√	×	×
The proposed method	√	√	√	√	√