关键词: 数字孪生装配, 多人协作, 知识图谱, 增强现实

Abstract: To ensure the first-time success rate and quality consistency of complex products in key assembly stages,an Augmented Reality (AR) multi-person collaborative assembly method based on digital twin was proposed.An AR multi-person collaborative assembly architecture was first proposed based on digital twin,and the assembly sequence was decomposed according to the complexity of collaborative assembly.The assembly process context data was constructed as an assembly process knowledge map,and the transmission and iteration mechanism of collaborative process assembly information was clarified,which improved the working condition adaptability of AR collaborative assembly.On this basis,the collaborative method based on root anchor points was used to realize AR scene collaboration in the multi-person assembly process.Relying on the real-time knowledge provided by the assembly process knowledge graph,the data collaboration was realized,which ensured the quality and efficiency of collaborative assembly.By taking the assembly of a complex rolling mill as an example,a multi-person collaborative digital twin assembly system based on augmented reality was established,and the effectiveness and feasibility of the proposed methods were verified through multi-person collaboration in process assembly.

Key words: digital twin-based assembly, multi-person collaboration, knowledge graph, augmented reality