空间可展开天线铰链热变形分析与试验验证

杨智杰; 张从发; 赵瑞杰; 王春洁; 赵军鹏

doi:10.13700/j.bh.1001-5965.2022.0219

空间可展开天线铰链热变形分析与试验验证

doi: 10.13700/j.bh.1001-5965.2022.0219

1.
北京航空航天大学机械工程及自动化学院，北京 100191
2.
北京空间飞行器总体设计部，北京 100094
3.
北京航空航天大学虚拟现实技术与系统国家重点实验室，北京 100191

基金项目: 国家自然科学基金(51635002)

详细信息

通讯作者:
E-mail：zhaojunpeng@buaa.edu.cn

中图分类号: V443.4
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- 被引次数: 0
出版历程
- 收稿日期: 2022-04-06
- 录用日期: 2022-05-14
- 网络出版日期: 2022-06-07
- 整期出版日期: 2024-01-31

Thermal deformation analysis and experimental verification of spatial deployable antenna hinge

1.
School of Mechanical Engineering and Automation，Beihang University，Beijing 100191，China
2.
Beijing Institute of Spacecraft System Engineering，Beijing 100094，China
3.
State Key Laboratory of Virtual Reality and Systems，Beihang University，Beijing 100191，China

Funds: National Natural Science Foundation of China (51635002)

More Information

Corresponding author: E-mail：zhaojunpeng@buaa.edu.cn

摘要

摘要:
在轨热变形是影响空间可展开天线精度的关键因素之一，因此，空间可展开天线结构的在轨热变形分析具有十分重要的意义。随着空间探测任务要求的不断提高，铰链热变形对空间可展开天线指向精度的影响已经不可忽略。以某空间可展开天线的根部铰链和臂间铰链为研究对象，建立其有限元模型，计算铰链主弯方向和侧弯方向在温度每变化10 ℃时相对角度的变化。基于高低温箱和电子经纬仪构建铰链精度测试系统，开展铰链热变形试验。试验结果表明：根部铰链和臂间铰链在主弯方向和侧弯方向呈现纯结构热变形特性，仿真结果与试验分析结果基本一致，验证有限元模型和试验分析方法的正确性。根据铰链主弯和侧弯方向角度相对变化，评估热变形对铰链变形的影响。该建模和试验分析方法可为同类型空间可展开天线设计、分析和优化及类似可展开机构精度影响因素的分析提供参考。
- 可展开天线 /
- 有限元分析 /
- 铰链 /
- 热变形 /
- 高低温环境
Abstract:
The in-orbit thermal deformation analysis of space-deployable antennae is very important because it is one of the major factors impacting the accuracy of these antennae.With the increasing requirements of space exploration missions, the influence of hinge thermal deformation on the pointing accuracy of space-deployable antennae cannot be ignored. In order to calculate the relative angle changes of the main bending direction and side bending direction of the hinges with each temperature change of 10 ℃, a finite element model of the root and arm hinges of a spatial deployable antennae was established. The hinge precision test system was constructed based on the high and low-temperature chamber and electronic theodolite, and the hinge thermal deformation test was carried out. The experimental results show that the root hinge and the interarm hinge exhibit pure structural thermal deformation characteristics in the main and side bending directions. The simulation results are basically consistent with the experimental results, which verify the validity of the finite element model and experimental analysis method. According to the relative Angle changes of the main and side bending directions of the hinge, the effect of thermal deformation on hinge deformation was assessed. The modeling and experimental analysis method can provide a reference for the design, analysis, and optimization of deployable antennas in the same space and the analysis of the factors affecting the accuracy of similar deployable mechanisms.
- deployable antenna /
- finite element analysis /
- hinge /
- thermal deformation /
- high and low temperature environment

HTML全文

图 1 某空间可展开天线

Figure 1. A spatially deployable antenna

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图 2 根部铰链和臂间铰链结构

Figure 2. Root hinge structure and interarm hinge structure

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图 3 某空间可展开天线有限元模型

Figure 3. Finite element model of a space deployable antenna

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图 4 铰链边界条件设置

Figure 4. Hinge boundary condition setting

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图 5 铰链热变形云图

Figure 5. Hinge thermal deformation cloud image

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图 6 法线向量转角示意图

Figure 6. Schematic diagram of normal vector angle

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图 7 铰链精度测试系统

Figure 7. Hinge accuracy test system

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图 8 单个温度循环试验流程

Figure 8. Flow chart of single temperature cycle test

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图 9 臂间铰链试验安装状态

Figure 9. Experiment installation state of interarm hinge

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图 10 根部铰链主弯方向相对角度变化

Figure 10. Relative angle changes of main benddirection of root hinge

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图 11 根部铰链侧弯方向相对角度变化

Figure 11. Relative angle changes of lateral benddirection of root hinge

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图 12 臂间铰链主弯方向相对角度变化

Figure 12. Relative angle changes of main bend direction of interarm hinge

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图 13 臂间铰链侧弯方向相对角度变化

Figure 13. Relative angle changes of lateral bend direction of interarm hinge

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表 1 铰链刚度参数

Table 1. Hinge stiffness parameters

关节	R_x/(10³ Nm·rad⁻¹)	R_y/(10³ Nm·rad⁻¹)	R_z/(10³ Nm·rad⁻¹)	x向平移刚度/(10⁶ N·m⁻¹)	y向平移刚度/(10⁵ N·m⁻¹)	z向平移刚度/(10⁵ N·m⁻¹)
根部铰链	5	5	5	1	5	5
臂间铰链	5	5	5	1	5	5

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表 2 铰链热变形分析与试验结果的转动角度

Table 2. Rotation angle of hinge thermal deformation analysis and test results (°)

结果类型	根部铰链主弯方向	根部铰链侧弯方向	臂间铰链主弯方向	臂间铰链侧弯方向
分析值	0.005 4	0.004 1	0.004 4	0.001 0
试验值	0.004 2	0.002 6	0.004 6	0.000 6

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