基于SysML的复杂产品系统设计与详细设计增量集成研究

In our country, the innovation ability of product design on system level is far weaker than that on component level. One of the primary reasons is that our country mainly focuses on the introduction of absorption and innovation, ignoring the most innovative design stage: system design. Model based system engineering (MBSE) and the standard modeling language SysML have become important to solve this problem. However, the integration of system design and detailed design (especially in an incremental manner) has become a bottleneck..This project aims to solve the key problem of effective incremental integration of system design and detailed design of the generalized physical subsystem of complex products. According to the extension of SysML, this project first proposes a semantics modeling method to specify the spatial geometric information of complex structure. And then an effective recognition method of heterogeneous model changes is proposed to automatically obtain incremental design change information on different modeling platforms to propagate it among such platforms. Finally, the semantics mapping mechanism between the proposed SysML geometric profile and EXPRESS to transfer information from system design models to detailed design models, which satisfies the requirements of incremental integration of system models. The results of this research have great guideline value and practical significance for effective design and optimization, which improve the innovation ability of engineering complex products.

我国在产品系统层面的创新能力远弱于底层构件的创新能力。根本原因之一是过去我国大多以引进吸收再创新为主，基本放弃了最具创新的整体系统设计。基于模型的系统工程及其标准建模语言SysML已成为解决这一问题的重要途径，然而如何在系统设计与后续的详细设计间进行集成，尤其是增量式的集成已成为瓶颈。.本项目拟解决复杂产品广义物理部分系统设计与详细设计间高效增量集成这一核心问题。通过扩展SysML，建立能统一刻画复杂结构空间几何信息的语义建模方法；通过对异构模型变动的高效识别，自动提取不同建模平台间的增量设计变动信息，进而将其进行传播；通过在SysML空间几何建模语言与跨CAD平台的EXPRESS语言间建立增量语义映射机制，自动完成系统设计模型至详细设计模型的增量转换与传递，满足系统模型增量集成的要求。项目研究成果对于高效实现复杂产品的设计与优化、提升复杂产品设计的创新能力具有重要的指导价值及现实意义。

本项目面向复杂机电产品设计中的系统设计与详细设计集成问题，基于标准系统建模语言SysML对系统需求、系统功能、系统逻辑结构与物理结构等层次设计信息进行规范化表征，建立跨层次、跨领域之间的模型语义追溯关联，形成完整的系统设计架构。该系统架构作为详细设计的系统方案输入，驱动后续领域设计过程。此外，在系统设计模型中对多域关联信息构建依赖模型，通过分析多域协同设计过程中的参数依赖关联机理，提炼其内在依赖关联知识，根据不同粒度要求，提出基于层次化参数关联依赖模型构建方法。该关联依赖模型基于底层关联依赖特征知识库，利用模型映射及结构更新算法，针对设计过程中包括参数值修改、参数添加及删除等各类变更对依赖模型进行动态调整。此外，该模型还可进一步扩展以包含系统相关设计指标，从而描述系统优化信息，支持系统优化设计。本项目所提出的系统模型建模方法，面向领域详细设计的参数依赖建模方法可有效减少设计人员的建模工作量，有助于降低出错率，提高设计效率。