考虑不确定因素的系统测试性建模与分析方法研究

Research on System Testability Modeling and Analysis Method Considering Uncertainty Factors

为建立系统更加准确合理的测试性模型,使系统测试性分析结果更加准确,论文综合分析系统故障传播过程的不确定性和测试的不确定性,用故障-测试概率相关性矩阵描述系统的不确定因素,然后给出了测试性指标的具体分析过程和算法。最后通过对某供电系统进行实例验证,结果表明根据故障-测试概率相关性矩阵计算得到的测试性指标更加符合实际,可以指导系统测试性设计工作。

In order to establish the testability of system more accurate and reasonable model,make the system testability analysis results more accurate,uncertainties in the process of the propagation of system failure and the uncertainty of the test are comprehensive analyzed.By using fault test probability correlation matrix,the uncertain information in the system is described,and then a specific analysis process and algorithm of testability index are given,the last of a power supply system is carried out by example.The results show that the calculated test index based on the fault-test probability correlation matrix is more practical and can provide a reference for the design of test performance.