摘要：【中文】本发明提出了一种基于数字孪生技术的卫星部装装配精度控制方法，首先基于数字孪生技术在虚拟空间中搭建卫星产品的装配孪生模型并以此进行装配工艺设计，然后分析影响产品装配精度的相关数据，在信息平台上构建装配精度信息模型并进行卫星整体装配精度仿真及预测，再依据装配精度仿真结果进行装配工艺优化，之后进入装配实施阶段，在卫星部装装配过程中不断更新装配信息模型和预测卫星整体装配精度，根据每次的预测结果实现对卫星整体装配精度的控制。本发明解决了传统装配过程中由于零件误差、零件选配、人员操作和工装夹具等问题导致的装配偏差累积问题，实现了对装配偏差超差的提前预警以及对装配精度的控制，提高了装配工作效率和装配成功率。 【EN】The invention provides a satellite partial assembly precision control method based on a digital twinning technology, which comprises the steps of firstly building an assembly twinning model of a satellite product in a virtual space based on the digital twinning technology, carrying out assembly process design according to the assembly twinning model, then analyzing relevant data influencing the assembly precision of the product, building an assembly precision information model on an information platform, carrying out satellite overall assembly precision simulation and prediction, carrying out assembly process optimization according to an assembly precision simulation result, then entering an assembly implementation stage, continuously updating the assembly information model and predicting the satellite overall assembly precision in the satellite partial assembly process, and realizing the control of the satellite overall assembly precision according to the prediction result of each time. The invention solves the problem of assembly deviation accumulation caused by part errors, part matching, personnel operation, tool fixtures and other problems in the traditional assembly process, realizes early warning on the out-of-tolerance of the assembly deviation and control on the assembly precision, and improves the assembly work efficiency and the assembly success rate.