| FAST望远镜两轴转向机构结构方案优化 |
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| 引用本文： | 张新宇,李辉,杨世模.FAST望远镜两轴转向机构结构方案优化[J].天文研究与技术,2011(3):220-228. |
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| 作者姓名： | 张新宇 李辉 杨世模 |
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| 作者单位： | 中国科学院国家天文台;中国科学院研究生院; |
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| 基金项目： | 国家自然科学基金(10973023); 中国科学院国家天文台青年人才基金资助 |
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| 摘 要： | FAST馈源支撑系统承载和驱动馈源运动,进行对天体的高精度跟踪观测.在实时的定位调整中,两轴转向机构起着辅助调整接收机姿态角的作用.为满足FAST两轴转向机构的重量及刚度要求,选择了一种空间刚架式的结构构型.提出了反映结构柔顺度及重量约束的目标函数,以各类杆件的截面面积以及整个结构的高度、半径等几何参数作为优化变量,采...
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| 关 键 词： | 结构优化 大射电望远镜 馈源支撑 有限元 形状优化 |
Optimal Designs of the Structure Configuration of the Two-Axis Steering Mechanism of the FAST |
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| Zhang Xinyu ,Li Hui ,Yang Shimo.Optimal Designs of the Structure Configuration of the Two-Axis Steering Mechanism of the FAST[J].Astronomical Research & Technology,2011(3):220-228. |
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| Authors: | Zhang Xinyu Li Hui Yang Shimo |
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| Institution: | Zhang Xinyu 1,2,Li Hui 1,Yang Shimo 1(1.National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100012,China,2.Graduate University of the Chinese Academy of Sciences,Beijing 100049,China) |
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| Abstract: | The feed support system of the Five-hundred-meter Aperture Spherical Telescope(FAST)suspends and drives the receiver to track astronomical objects in high precision for observation.A two-axis steering mechanism has an auxiliary function in the process of real-time adjustment of the feed position and altitude angle.We design such a mechanism of truss configuration to satisfy requirements on mass and rigidity.In numerical optimization of the designs,we use an objective function reflecting constraints on compl... |
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| Keywords: | Structural optimization Five-hundred-meter Aperture Spherical Telescope Feed support system Finite element method Truss structrues |
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