大型天线装配测量与实时反馈调整技术

针对大型天线在装配过程中共轴铰链空间位置难以准确定位和测量、传统测量方法容易受到天线杆件的干涉影响测量精度等问题，通过搭建大型天线装配测量与实时反馈调整系统，采用数字摄影测量技术对天线的面板、铰链和杆件的装配精度进行了测量，并将测量结果实时反馈给六自由度自动执行机构调整共轴铰链的空间位置，实现大型天线的柔性化、自动化和精准化装配。试验结果表明数字摄影测量相机的精度与激光跟踪仪的精度偏差不大于0.01 mm；六自由度自动执行机构对共轴铰链的位姿调整位移精度优于0.02 mm，角度精度优于0.01°，能够满足大型天线的装配和测量要求，该方法可以提高大型天线装配效率和自动化技术水平，为尺寸更大和结构更复杂的天线集成装配奠定技术基础。

Assembly Measurement and Real-Time Feedback Adjustment Technology of Large Antenna

Aiming at the problems in the assembly process of large antenna, for example, the spatial location of coaxial hinge is difficult to adjustment accurately, and the measurement accuracy of traditional measurement methods is affected by the interference of antenna poles. The paper builds the system of assembly measurement and real-time feedback adjustment for large antenna. The assembly accuracy of antenna hinges and poles are measured by digital photogrammetry. The measured results are feedback to the 6-DOF automatic actuator to adjust the spatial location of coaxial hinge, thus the automatic assembly of large antenna can be realized. Experimental results show that the measurement accuracy between the digital photogrammetry and laser tracker is no more than 0.01 mm; the displacement accuracy of the 6-DOF automatic actuator to adjust the spatial location of coaxial hinge is better than 0.02 mm, and angle accuracy is better than 0.01°. It can meet the assembly and measurement requirements of large antenna. The method can improve the assembly efficiency and automation level of large antenna. It lays technology foundation for antenna assembly with larger size and more complex structure.