数字孪生驱动的射电望远镜结构热变形补偿系统  

Digital Twin-Driven Structural Thermal Deformation Compensation System for Radio Telescopes

作　　者：雷震 刘宇华 丁凯 陈浩祥 李东伟 Lei Zhen;Liu Yuhua;Ding Kai;Chen Haoxiang;Li Dongwei(School of Construction Machinery,Chang'an University,Xi'an 710064,China;The 39th Research Institute of China Electronics Technology Group Corporation,Xi'an 710006,China)

机构地区：[1]长安大学工程机械学院,陕西西安710064 [2]中国电子科技集团公司第三十九研究所,陕西西安710006

出　　处：《系统仿真学报》2024年第8期1869-1883,共15页Journal of System Simulation

基　　金：国家自然科学基金(12203008);陕西省自然科学基础研究计划(2021JM-150);中央高校基本科研业务费专项资金(300102253204)。

摘　　要：为解决在日照热载荷作用下大型射电望远镜结构变形无法实测与动态补偿的问题,研究了一种数字孪生驱动的射电望远镜结构热变形补偿系统。提出了基于实测数据与仿真数据融合的射电望远镜热温度场构建方法,建立了射电望远镜结构热变形仿真预测机理模型、结构热变形动态补偿机理模型,开发了射电望远镜结构热变形动态补偿数字孪生系统,通过微型实体模型实验对所提出的技术与系统进行了有效性验证。结果表明:将数字孪生技术应用于射电望远镜等大型天文装备,实现了其结构热变形的近实时监测和动态补偿,且补偿方案具有良好的时效性,有助于提升射电望远镜运行性能。The structural thermal deformation of large-scale radio telescopes under solar thermal load cannot be measured in real-time and compensated dynamically.To solve this problem,a digital twin-driven structural thermal deformation compensation method and system is studied.Based on the fusion of measured data and simulation data,a temperature field modeling method is proposed.A simulation and prediction model of structural thermal deformation is established,and a dynamic compensation model of structural thermal deformation is built.A digital twin-driven dynamic structural thermal deformation compensation system for radio telescopes is developed.A micro-experimental model is studied to verify the effectiveness of the proposed method and system.The results show that the application of digital twin technology for largescale astronomical equipment such as radio telescopes realizes the near real-time monitoring and dynamic compensation of structural thermal deformation.The proposed dynamic compensation method has a good time sensitivity,which helps improve the working performance of radio telescopes.

关 键 词：数字孪生 射电望远镜 机械结构 变形补偿 温度场 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术] TH166[自动化与计算机技术—计算机科学与技术]