考虑FDR的测试性测定试验及其相关方法

Concept of testability determine test and relative method for FDR

针对装备研制过程中,缺乏试验手段测定产品测试性水平,确定其与规定要求间的差距的情况,界定了测试性试验和测试性测定试验的概念,在仅考虑测定故障检测率(FDR,Fault Detection Rate)的情况下,研究给出了基于功能相关特征矩阵和重要度特征的故障特征建模方法,构建了二元组故障特征模型,用于测定FDR试验的试验样本选取.在该种试验样本选取方法中,为了减少进行故障注入试验时,注入不同故障样本的工作量和复杂度,充分考虑了试验样本间的等效关系,定义了等价集合和等效样本的概念,并在此基础上给出了考虑等效样本存在的试验结果评估方法.该研究在某型导弹飞控系统中取得了很好的应用.

To solve absence problem of the method in determining the product＇s testability level and find the difference between the practical testability situation and the requirements, the concepts of testability test and testability determine test was proposed. With the only consideration of fault detection rate （ FDR ）, the method to establish fault character model （FCM） was given, which is based on the fault-function relation matrix and fault weightiness. Two-tuples FCM was illustrated and the flow to select sample based on two-tuples FCM in testability determine test was given. To simplify the workload and the complexity of the fault injection test, the equivalent relation between test samples were researched. The equivalent set and the equivalent injection sample （EIS） were defined. The relative method of result evaluation for FDR was researched. An example on a control system in some missile was illustrated, and the results show that the methods introduced are correct and feasible.