软件可靠度的模糊故障树评定方法

软件可靠性的定量评价是软件可靠性工程的关键问题之一,采用故障树方法对软件进行定性和定量分析,提出了两类情况下对影响软件可靠性的主次因素划分及其模糊权重的计算方法。在此基础上,建立多级模糊评价模型,提出了增广和聚合算法,并给出了软件可靠度算式。选择某型航空装备软件进行了测试实例分析,实验结果表明了该方法评价结构的合理性与评价算法的有效性,适用于软件质量及开发过程控制的工程实践。

Method for software reliability assessment based on fuzzy fault tree analysis

The quantitative assessment of software reliability is one of the most important problem for software reliability project, this paper used firstly the qualitative and quantitative analyzing based on fault tree analysis of software, it proposed the method for fuzzy weight calculating and the primary and secondary ingredients compartmentalizing. It established the multi-grade fuzzy assessment model, discussed the enhanced and converging arithmetic, and proposed the expressions of reliability. This method presented its rationality of assessment configuration and validity of assessment arithmetic through testing and analyzing of an aero equipment's software, it could be used on quality and exploitation control engineering for software.