The calculation of uncertainty data based on blind number

This paper illustrates the process of equipment maintenance support information analysis from the input and output of model perspective. It summarizes two kinds of uncertainty forms, probable values and interval values. The entropy theory is used to measure uncertainty in this paper. Then it explains the interval value uncertainty spreading mechanism in equipment maintenance support information analysis. The method of analysis the interval uncertainty based on blind number theory is studied. At last, combining with the uncertainty result of mean maintenance time case proves that the application of blind number theory is feasible.