基于数字孪生的航空发动机低压涡轮单元体对接技术研究

提出一种基于数字孪生的航空发动机低压涡轮单元体对接技术，以某型航空发动机总装装配的低压涡轮单元体对接安装关键过程为对象，采用数字孪生技术，通过对环境、工艺过程中的物理对象建模，并使用多传感器进行模型与物理对象之间数据映射与互联，实现航空发动机低压涡轮单元体对接工艺过程与3D虚拟对接仿真过程的物理融合、模型融合、数据融合。通过数据在虚拟仿真环境中的可视化展示与分析，实时预警及决策，并借助物理终端控制实现低压涡轮单元体对接安装过程的实时位姿调整，提高了真实对接过程的可视性、可达性、可操作性和可预测性。基于数字孪生的低压涡轮单元体对接技术可保证在复杂装配条件、高精度要求下，真实单元体装配过程的无磕碰对接，减少操作人员劳动强度。

Research on the Docking Technology of Final Installation for aeroengine Low Pressure Turbine Unit Based On Digital Twin

A Low Pressure Turbine (LPT) unit docking technology for aero-engine final installation based on digital twinning is proposed. The parallel process of both 3D virtual docking simulation and the real docking is given synchronously by digital twin technology. The 3D LPT unit docking simulation platform is realized by modeling the physical object of environment and process. The data between the 3D simulation platform and the physical object are mapping and interconnecting by multi-purpose sensors. Through visualization display and analysis of data in 3D simulation platform, real-time position adjustment decisions for LPT unit docking are making and done by the physical terminal control device. The 3D virtual docking simulation and real time data tracking shows better visibility and predictability of the docking process, which provide data for the onsite technical engineer to do the decision during the installation process, ensuring the precisely installation without collisions, and reducing the labor intensity of the operator.