FDR验证试验的故障样本分配策略研究  

Research on Fault Sample Allocation Strategy for Fault Detection Rate Verification Test

作　　者：王志 李星新 王成 于永利 WANG Zhi;LI Xingxin;WANG Cheng;YU Yongli(Shijiazhuang Campus,Army Engineering University of PLA,Shijiazhuang 050003,China)

机构地区：[1]陆军工程大学石家庄校区,石家庄050003

出　　处：《计算机测量与控制》2022年第7期298-303,共6页Computer Measurement &Control

摘　　要：故障率作为测试性验证试验故障样本分配的主要影响因素,针对一些情况下使得故障样本分配结果的合理性不足的问题,以故障检测率(FDR,Fault Detection Rate)作为验证指标,提出了一种考虑严酷度的样本故障模式选取方法;利用基于模糊证据推理的方法解决了故障模式严酷度排序问题;通过对相关标准中涉及的故障样本分配策略进行梳理,针对现行多因子综合加权比例分配方法不足之处,根据故障模式种类与验证样本量的数量关系,区分不同情况,借助预选样本集随机抽样、考虑严酷度的取整策略,以及动态概率调整,合理改善了故障率主体分配方案进行故障模式选取时样本分配集中不合理的状况;以某装备单元的FDR验证试验为例,验证了所提故障样本分配方法的可行性合理性。Aiming at the problem that the failure rate is the main influencing factor of failure sample allocation in testability verification test,which makes the rationality of failure sample allocation result insufficient in some cases,and the failure detection rate(FDR)is taken as the verification index,a sample failure mode selection method considering severity is proposed.Based on fuzzy evidential reasoning,the method is used to solve the problem of fault mode severity ranking.By sorting out the fault sample allocation strategies involved in the relevant standards,aiming at the shortcomings of the current multi factor comprehensive weighted proportional allocation method,different situations are distinguished according to the quantitative relationship between the type of fault mode and the number of verification samples,with the help of random sampling of preselected sample set,rounding strategy of considering the severity,and dynamic probability adjustment,It reasonably improves the unreasonable condition of sample distribution concentration when the failure rate subject allocation scheme selects the failure mode.Taking the testability verification test of a certain unit as an example,the feasibility and rationality of the proposed fault sample allocation method are verified.

关 键 词：测试性验证 故障检测率 样本分配策略 严酷度 模糊证据推理 

分 类 号：TP806[自动化与计算机技术—检测技术与自动化装置]