Aircraft final assembly line modeling based on digital twin

doi:10.3785/j.issn.1008-973X.2021.05.005

Journal of ZheJiang University (Engineering Science)

2021, Vol. 55

Issue (5): 843-854 DOI: 10.3785/j.issn.1008-973X.2021.05.005

Aircraft final assembly line modeling based on digital twin

Shou-guo ZHENG1(

),Yong-de ZHANG2,Wen-tian XIE1,Hu FAN2,Qing WANG1,*(

)

1. Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, College of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China
2. Xi’an Aircraft Industrial (Group) Co. Ltd, Xi’an 710089, China

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Abstract

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.

Key words： aircraft final assembly cyber-physical fusion digital twin technology WebGL virtual-real mapping

Received: 13 August 2020 Published: 10 June 2021

CLC:

TP 391

Fund: 国家重点研发计划资助项目（2019YFB1707501）；国家自然科学基金资助项目（51975520）

Corresponding Authors: Qing WANG E-mail: sgzheng@zju.edu.cn;wqing@zju.edu.cn

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Cite this article:

Shou-guo ZHENG,Yong-de ZHANG,Wen-tian XIE,Hu FAN,Qing WANG. Aircraft final assembly line modeling based on digital twin. Journal of ZheJiang University (Engineering Science), 2021, 55(5): 843-854.

URL:

http://www.zjujournals.com/eng/10.3785/j.issn.1008-973X.2021.05.005 OR http://www.zjujournals.com/eng/Y2021/V55/I5/843

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.

关键词： 飞机总装生产线, 信息物理融合, 数字孪生技术, WebGL, 虚实映射

Fig.1 Logic diagram of aircraft assembly line business

Fig.2 Modeling framework of aircraft assembly line based on digital twin

Fig.3 Relationship of six elements

Fig.4 Network topology of element information collect

Fig.5 Flowchart of database operation

Fig.6 Technical flow chart of 3D visualization and information integration platform for aircraft assembly production line

Fig.7 Three-dimensional scene display of aircraft assembly line

Tab.1 Assembly environment requirements and state changes of assembly objects in different assembly stages

Fig.8 Interface of files operation for MES system

Fig.9 Interface of files operation for field device

Fig.10 Realtime data of FP1

Fig.11 History data of FP1

Fig.12 Fault information inquiry of FP1


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