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介绍了在民用飞机系统顶层设计中基于模型的系统工程方法的应用。该流程由需求分析、功能分析和设计综合阶段构成。对每一个用例的功能分析中得到活动图、顺序图和可执行的状态机。执行状态机可验证需求的符合性,同时形成系统功能和非功能性需求。储存在数据库中的需求逐条与模型元素建立链接关系,保证可追溯性。黑盒模型完成之后,将功能与流程分配系统架构中,形成子系统白盒模型和子系统接口。相比传统设计方法,该流程更好地保证了系统可测试性、可追溯性和功能的完整性。
The application of the model-based system engineering method in the top-level design of civil aircraft system is introduced. The process consists of requirements analysis, functional analysis and design synthesis phase. The activity diagrams, sequence diagrams, and executable state machines are obtained from the functional analysis of each use case. The execution state machine verifies the compliance of the requirements, forming both system and non-functional requirements. The requirements stored in the database establish linkages with the model elements one by one to ensure traceability. After the black box model is completed, the functions and processes are assigned to the system architecture to form a subsystem white box model and subsystem interface. Compared to traditional design methods, this process better guarantees system testability, traceability and functional integrity.