基于数字孪生的飞机总装生产线建模

为了实现飞机制造企业总装生产线车间物理空间与信息空间的实时交互与深度融合，通过分析飞机总装生产线组成单元与生产业务逻辑，提出基于数字孪生的飞机总装生产线车间建模框架. 从“人、机、料、法、环、测”六维视角出发，阐述生产线关键要素建模与实现，并提出飞机总装生产线三维可视化及信息集成平台实现技术流程. 在CATIA中建立车间三维数字模型，基于浏览器和WebGL技术建立虚拟空间，通过采集生产现场过程数据实现物理实体向虚拟空间的实时映射. 以某型飞机总装生产线车间为例，实现总装现场与虚拟可视化的同步映射、WebServices服务、信息查询服务及装配工艺过程查询服务，有效提高作业效率并为工作人员决策提供科学参考.

Aircraft final assembly line modeling based on digital twin

The components of the aircraft assembly line and the business logic were analyzed, and a digital twin based modeling framework for the aircraft assembly line was proposed, in order to realize the real-time interaction and deep integration of physical space and information space in the final assembly line of aircraft manufacturers. The modeling and the implementation of the key elements of assembly line were elaborated from the six-dimensional perspective of “human, machine, material, method, environment, and measurement”. Correspondingly, the technical process of the three-dimensional visualization and the information integration platform of the aircraft assembly line was proposed. A three-dimensional digital model of the workshop was established in CATIA. Then, a virtual space was built up based on the browser-based framework and WebGL technology and the real-time mapping of physical entities to virtual space was achieved by collecting process data from the shop-floor. An aircraft final assembly line was taken as an example, the synchronous mapping between the assembly workshop and virtual visualization, webServices service and information query service were realized, which improves the assembly efficiency and can provide scientific references for manual decision.