A Software Based on Multi-Signal Flow Graph Model for PHM-Oriented Design for Testability

This paper introduced a new software named Design and Analysis System for Testability Engineering (DASTE)developed for PHM-oriented design for testability (DFT)aiming at assisting developers improve their designs. First, we developed a visual development environment based on multi-signal flow graph model. Second, we got a failure-test dependency matrix by analyzing the relationship between failures and symptoms, and the relationship between tests and symptoms. Next, we analyzed the testability indices according the dependency matrix and fault propagation time. Last, an amplifier circuit as an example is used to verify the function of the DASTE.