简述了对故障树程序的移植和改进。这些改进是:增加了相关割集重要度计算、割集数大于某值的截断、最小割集故障率计算、相关割集的排队、最小割集故障率排队、以及当割集故障率小于某一值割集的再次截断等功能。计算结果表明,使用改进后的程序在给出同样结果的条件下可大大地节省计算时间。 Briefly described the fault tree transplantation and improvement. These improvements are: increased relevance of cut set calculation, cut set is greater than a certain number of truncation, the minimum cut set calculation of failure rate, the relevant cut set of queuing, the minimum cut set failure rate queuing, and cut set failure rate is less than a A value cut set again cut off and other functions. The calculation results show that using the improved program can save computational time greatly under the condition of giving the same result.