基于运行场景的结构化民机系统功能需求捕获方法

Structured functional requirement capture method of civil aircraft system based on operation scenario

基于场景的需求捕获方法存在需求偏差和缺失、可追溯性和一致性不足等问题。本文基于模型的系统工程(MBSE,model-based system engineering)在体系结构框架下建立可视化视点模型,形成“运行场景—功能需求”过程的映射关系,提出基于运行场景的结构化民机系统功能需求捕获方法。以平视显示器(HUD,head-up display)系统为例,构建多维度、多层次场景和多视图体系结构模型,实现系统功能需求开发的“正向设计”,验证了该方法的可操作性和有效性。该方法对提升民机系统需求分析能力及系统开发思路具有重要参考意义。

The scenario based requirement capture method has problems such as deviation and lack of requirement,insufficient traceability and consistency.This article establishes a visual viewpoint model based on model-based system engineering(MBSE)within the architecture framework,forms a mapping relationship between the"operation scenario-functional requirement"process,and proposes a structured functional requirement capture method of civil aircraft system based on operation scenario.Taking head-up display(HUD)system as an example,a multi-dimensional,multi-level scene and multi-view architecture model are constructed to achieve the"forward design"of system functional requirement development,and the operability and effectiveness of this method are verified.This method has important reference significance for improving the requirement analysis ability and system development ideas of civil aircraft system.