基于设计特性覆盖的测试性定量分析方法

针对目前测试性分析基于故障分析的现状，提出了一种基于系统结构、性能、功能的测试性定量分析方法。定义了系统设计特性覆盖测试模型,系统结构、功能、性能及测试关联模型,性能覆盖率、功能覆盖率、结构覆盖率的定量计算模型。建立了基于设计特性覆盖的测试性定量分析流程，主要包括系统基本信息建立、信息间直接关联关系生成，测试覆盖率定量计算及测试未覆盖项分析。以某飞机舵机系统为例进行了应用，结果验证了方法的可行性和有效性。

Quantitative analysis of system testability based on design characteristics

Aiming at the situation that current testability analysis methods are based on failure analysis, a quantitative testability analysis method based on system structure, performance and function is proposed. Mathematical definitions of this method are established, including the test set of system design characteristics, the direct relationship set among system function sets, performance sets, structure sets and test sets. Performance coverage rate, function coverage rate, and unit coverage rate are also defined. The engineering operation flow of this method is established, which includes establishing basic information, generating direct relationship between the information, calculating of test coverage rate, analyzing the design characteristics of terms which are not tested. A plane’s servo system is taken as an example for the engineering application, which shows that this method is feasible and effective.