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Research Article

Digital twin for geometric feature online inspection system of car body-in-white

, , , &
Pages 752-763 | Received 31 Mar 2019, Accepted 16 Feb 2020, Published online: 12 Mar 2020
 

ABSTRACT

With the development of digital twin, the research on the fusion of intelligent manufacturing system and digital twin technology attracts more attention. In this paper, the realization of digital twin is studied for geometric feature online inspection system of body-in-white (BIW). A three-level virtual modeling approach of Element-Behavior-Rule is proposed for the physical environment modeling in a digital environment. An element model, behavior model and rule model are defined, respectively, and the relationship among the three-layer model is given for real-time communication. A three-layer communication architecture of the digital twin system is designed for the real-time mapping between physical and virtual space, and the process of the online inspection digital twin system is analyzed. Finally, on the basis of the online inspection physical experimental platform and JHIM (Jiangheng Intelligent Manufacturing) software platform, the digital twin system for geometric feature online inspection of BIW is developed, which shows that the virtual model can be driven in real time by real-time physical inspection data. Digital twin technology provides a feasible way for real-time monitoring of the online inspection system.

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work was supported by the Shanghai Key lab of Advanced Manufacturing Environment, the Ministry of Industry and Information Technology of China under Grant [No. [2017]614-9]; and Aerospace Science and Technology Joint Fund under Grant [No. 6141B06310301].

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