In the process of logistics distribution of manufacturing enterprises, the automatic scheduling method based on the algorithm model has the advantages of accurate calculation and stable operation, but it excessively relies on the results of data calculation, ignores historical information and empirical data in the solving process, and has the bottleneck of low processing dimension and small processing scale. Therefore, in the digital twin (DT) system based on virtual and real fusion, a modeling and analysis method of production logistics spatio-temporal graph network model is proposed, considering the characteristics of road network topology and time-varying data. In the DT system, the temporal graph network model of the production logistics task is established and combined with the network topology, and the historical scheduling information about logistics elements is stored in the nodes. When the dynamic task arrives, a multi-stage links probability prediction method is adopted to predict the possibility of loading, driving, and other link relationships between task-related entity nodes at each stage. Several experiments are carried out, and the prediction accuracy of the digital twin-based temporal graph network (DTGN) model trained by historical scheduling information reaches 99.2％ when the appropriate batch size is selected. Through logistics simulation experiments, the feasibility and the effectiveness of production logistics spatio-temporal graph network analysis methods based on historical scheduling information are verified.

College of Mechanical Engineering,Donghua University,Shanghai 201620,China;Shanghai Frontier Science Research Center for Modern Textiles,Donghua University,Shanghai 201620,China;Guangzhou Zhijing Information Technology Co.,Ltd.,Guangzhou 510220,China

[1]ZHENG Longhui;SUN Yicheng;ZHANG Huihui;BAO Jinsong;CHEN Xiaochuan;ZHAO Zhenhong;CHEN Zhonghao;GUAN Ruifeng-.Modeling and Analysis of Production Logistics Spatio-Temporal Graph Network Driven by Digital Twin)[J].东华大学学报（英文版）,2022(05):461-474

DTGN

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