关键词: 数字孪生, 制造单元, 多维多尺度建模, 边—云协同, 智能车间

Abstract: Multi-dimensional,multi-scale and high-fidelity modeling of a discrete intelligent workshop and its software and hardware configuration and collaboration are still one of the bottleneck problems for the current research and practice of intelligent manufacturing.In response to this problem,a basic realization unit of the discrete intelligent workshop——Digital Twin Manufacturing Cell (DTMC) was taken as the object,and the constituent elements and key points of DTMC empowered by a new generation of information technologies were explored from the perspective of data-knowledge hybrid drive.The multi-dimensional and multi-scale intelligent space model of DTMC and its high-fidelity modeling method were proposed.From the perspective of edge-cloud collaboration,a software and hardware integrated configuration model of DTMC was constructed,and the smart contract-based edge-cloud collaborative operation and intelligent control mechanism of DTMC was established.A prototype system of DTMC was constructed,where an integral impeller was taken as an example to demonstrate the feasibility and effectiveness of the proposed approach.

Key words: digital twin, manufacturing cell, multi-dimensional and multi-scale modeling, edge-cloud collaboration, intelligent workshop