首次火星探测70米天线结构保型设计
Structure Preservation Design of 70-meter Antenna for the First Mars Exploration
摘要
详细介绍了首次火星探测70 m天线结构保型设计的实现方法和关键要素：用伞形支撑结构实现反射体等刚度支撑，达到结构变形均匀化，提高主反射面的吻合精度，为保型设计奠定坚实基础； 用三自由度调整机构实现副反射面随动控制，补偿主反射面最佳吻合以及副面支撑结构变形带来的电性能下降，为保型设计提供有力保障。工程中用到的等刚度设计理念为国内鲜有的设计理念，对我国后期大口径天线设计具有参考意义。三自由度调整机构能够有效补偿副面支撑结构变形以及主反射面最佳吻合后焦点位置调整带来的电性能下降。
Abstract
In this paper, the method and key elements of the 70 m antenna structure preservation design for the first Mars exploration are introduced in detail. The umbrella-like support structure is used to realize the equal stiffness support of the reflector, so as to achieve the effect of uniform deformation of the structure, improve the anastomosing accuracy of the main reflector, and lay a solid foundation for the preservation design. Three degrees of freedom adjusting mechanism is used to realize the effect of the secondary reflector following control, compensate the best fit of the main reflector and the electrical performance decline caused by the deformation of the secondary support structure, and provide a strong guarantee for the shape preservation design. The design concepts of equal stiffness used in this project are rare design concepts in China and have reference significance for later large-aperture antenna design in our country. The three degree of freedom adjusting mechanism can effectively compensate the electrical performance degradation caused by the deformation of the auxiliary support structure and the adjustment of the focus position after the best fit of the main reflector.关键词
保型设计/等刚度设计/最佳吻合技术/副面随动控制/大口径天线Key words
preservation design/equal stiffness design/best fitting technique/secondary surface follow-up control/large aperture antenna引用本文复制引用
李大涛,李 燕,赵武林.首次火星探测70米天线结构保型设计[EB/OL].(2023-10-17)[2026-04-05].https://chinaxiv.org/abs/202311.00016.学科分类
无线电设备、电信设备/雷达
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