Testability modeling and analysis of cabin pressure control system based on multi-signal flow graphs

In order to verify the testability of the cabin pressure control system and ensure the testability parameters such as the fau lt detection rate and isolation rate meet the design requirements, the multi-signal flow graphs model is built to evaluate the system testability performance using testability simulation software, and the system architecture and FMEA results of the cabin pressure control system are also analyzed. The results show that the improved testability design can serve for the syst em requirements, and the multi-signal flow graphs modeling and analysis method is effective for testability analysis and evaluation.