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对TEAMS和eXpress两款主流测试性建模与分析软件所采用的测试性框图模型——多信号模型和混合诊断模型,从产品结构单元表示、端口表示、功能(信号)表示、故障模式表示、测试表示等多个方面进行了深入比较研究,并对二者进行了综合评价;在此基础上,综合两者特性提出了一种新的测试性框图模型改进方案——端信号模型;通过将组元端口所通过信息流直接视作信号、引入结点、扩充信号映射定义、允许定义多值测试等多种设置,端信号模型方案能够支持基于电路网表创建模型和更为精确化的故障-测试关联性描述。
The test block diagram models of multi-signal model and hybrid diagnosis model used by TEAMS and eXpress, two mainstream test modeling and analysis softwares, from the product structure unit representation, port representation, function (signal) representation, fault mode representation, Test and other aspects of a number of in-depth comparative study, and a comprehensive evaluation of the two; On this basis, based on the characteristics of the two proposed a new test block diagram model to improve the program - the signal model; The information flow through the component ports is directly treated as a signal, the introduction of nodes, the expansion of the signal mapping definition, allowing the definition of multi-value test and other settings, the end signal model program to support the network based on the netlist to create models and more accurate fault - Test relevancy description.