| 引用本文: | 李俊英， 吴文志， 任开锋， 于坤鹏， 张 平. 星载天线热变形游离设计的试验验证与有限元模型修正[J]. 雷达科学与技术, 2025, 23(3): 313-316.[点击复制] |
| LI Junying, WU Wenzhi, REN Kaifeng, YU Kunpeng, ZHANG Ping. Experimental Verification and Finite Element Model Updating of Thermal Deformation Free Design for Spaceborne Antenna[J]. Radar Science and Technology, 2025, 23(3): 313-316.[点击复制] |
|
| 摘要: |
| 星载天线在轨热变形对天线电性能有显著影响。因此，为确保星载天线在轨可靠服役，需采取合理热变形控制措施，并对其在轨热变形进行准确预示。星载天线采取了基于游离设计的热变形控制方法，为评估该游离设计的有效性，本文结合其模块化、阵列化的特点，以缩减尺寸的天线试验件为对象，利用摄影测量系统，开展了有限工况下的热变形试验。依据试验结果，开展了天线热变形有限元模型修正，并以修正后的模型预示了天线在轨热变形。结果表明，采用游离设计可显著降低天线阵面热变形；基于热变形试验修正的有限元模型可较为准确地预示天线在轨热变形。 |
| 关键词: 星载天线 热变形 游离设计 有限元仿真 摄影测量 模型修正 |
| DOI：DOI:10.3969/j.issn.1672-2337.2025.03.008 |
| 分类号:TN965+.2；TH122；O242.21 |
| 基金项目:国防科工局基础科研项目（No.JCKY2021210B007） |
|
| Experimental Verification and Finite Element Model Updating of Thermal Deformation Free Design for Spaceborne Antenna |
|
LI Junying, WU Wenzhi, REN Kaifeng, YU Kunpeng, ZHANG Ping
|
|
The 38th Research Institute of China Electronics Technology Group Corporation, Hefei 230088, China
|
| Abstract: |
| The on-orbit thermal deformation of the spaceborne antenna has a significant effect on the electrical performance. In order to ensure the reliable service of the antenna, it is necessary to take reasonable control measures to reduce the thermal deformation and accurately predict its thermal deformation in orbit. The thermal deformation control method based on free design is adopted for the space-borne antenna. To evaluate the effectiveness of the free design, combined with its modular and arrayed characteristics, the thermal deformation test under limited operating conditions is carried out by using the photogrammetry system with the reduced-size antenna test model as the object. The test results are used for updating the finite element model, and based on this modified model, the on-orbit thermal deformation is calculated. The results indicate that the free design can significantly reduce the thermal deformation, and by updating the finite element model through thermal deformation test, the on-orbit thermal deformation can be predicted more accurately. |
| Key words: spaceborne antenna thermal deformation free design finite element simulation digital photogrammetry model updating |
