An equipment-level digital twin method for industrial robots for machining
提出一种低成本的设备级轻量化工业数字孪生系统，详细阐述了物理实体与虚拟模型在空间坐标建立和转换上的同步机制，并通过辅助动力单元舱门装配面磨削实验验证了方法的实用性和有效性。
The machining and assembly processes of high-end industrial equipment require high precision and efficiency. Digital twin (DT) can enable real-time simulation and monitoring, allowing for the timely prediction and adjustment of operations to enhance production efficiency and quality. Current research shows that the synchronisation of data and models in DT has not been elaborated in detail. This study proposes a low-cost equipment-level lightweight industrial DT system, elucidating the spatial coordinate establishment and conversion mechanisms in synchronisation between physical entities and virtual models. A detailed data and model interaction method compatible with multi-version modelling and data processing software is proposed, which realises the lightweight of virtual models, reduces the cost of DT, and improves the synchronisation speed. Taking the assembly surface grinding process of the auxiliary power unit (APU) hatch as an example, the practicality of the proposed method is verified, and the effectiveness of the proposed method is validated through point cloud scanning technology. The results show that the proposed method can achieve synchronisation of physical entities and virtual models’ movements and ensure working accuracy. This study reduces the requirements of DT for industrial software configuration, enhances the efficiency of DT and facilitates further development of DT in industry.