基于MBSE的综合传动装置需求分析

MBSE-based Requirement Analysis of Transmission System

作为现代特种车辆的核心系统之一,综合传动装置的研制是一项复杂的系统工程,对整车机动性能具有关键影响,其准确和完备的设计需求有助于控制设计风险、降低研发周期和成本等。将基于模型的系统工程方法应用于综合传动装置的需求分析过程,提出一种分研制阶段和结构层级的方法。基于整车运行场景,自顶向下捕获与整车性能相关的综合传动装置及其部件需求,并定义整车需求到综合传动装置需求、再到各部件需求之间的分解追溯关系。该方法结合系统建模语言及相关工具,对某特种车辆的指标类需求进行分析,分别在各研发阶段得到不同系统层级的需求指标及其之间的交联关系。分析结果表明,所提方法可以建立综合传动装置的需求指标体系,为整车性能匹配与优化分析提供方向。

As one of the core systems of modern special vehicles,the transmission system is a complex system engineering and has a key influence on the vehicle mobility performance.Accurate and complete design requirements are helpful to control the design risks,and reduce the development cycle and cost,etc.The model-based systems engineering method is applied to the requirement analysis process of transmission system,and a method characterized by development stages and structure levels is proposed.Based on vehicle operating scenarios,the proposed method is used to capture the requirements of the transmission system and its components related to the vehicle performancefrom top to bottom,and defines the decomposition and traceability relationship among the requirements of the vehicle,the transmission system and its components.With system modeling language and related tools,this method is used to analyze the indicator-kind requirement of a special vehicle,and obtain the requirement indicators and the cross-linking relationships of different system levels in the whole stage of research and development The result shows that the ptoposed method can well build a set of requirement indicators of the transmission system,thus providing a direction for the performance matching and optimization analysis of the vehicle.