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为高分辨率太空摄像机设计和分析光学-机械-热系统
Xiaohan Liu1,2, Jian Jiao3, Kaihui Gu1,2
1Jilin Engineering Laboratory for Quantum Information Technology, Jilin Engineering Normal University, Changchun 130052, China.
Sensors (Basel, Switzerland)
|December 31, 2025
概括
这项研究优化了一个太空摄像机.
科学领域:
- 光学和光子学 在光学和光子学.
- 航空航天工程 航空航天工程
- 机械工程 机械工程
背景情况:
- 微纳米卫星光电子有效载荷需要高分辨率,紧的尺寸和超轻型设计,具有高结构稳定性.
- 现有的设计往往面临着平衡这些竞争要求的挑战,特别是关于光热机械稳定性的挑战.
- 在发射和轨道条件下精确的光学性能对于任务的成功至关重要.
研究的目的:
- 为太空摄像机设计和分析一个光热机械系统,以满足严格的微纳米卫星有效载荷要求.
- 为了实现高分辨率,紧的尺寸和超轻的特性,同时保持结构完整性.
- 通过模拟和实验测试验证性能,包括轨道成像.
主要方法:
- 设计了一个同轴三反射器光学系统,具有多个折射路径,用于一个紧,轻量级的结构.
- 开发了主要支结构和镜子的拓和维度优化的数学模型.
- 在环境负荷组合下 (重力,热变化,组装偏差) 进行了稳定状态热分析,热控制设计和系统模拟.
主要成果:
- 优化的设计在模拟环境条件下满足了表面精度,镜子位移和倾斜角度规格.
- 实现了第一阶自然频率156.731 Hz (模拟) 和153.09 Hz (测试),超过了100 Hz的要求.
- 波面偏差测试显示波面误差为0.073λ,满足≤1/14λ规格.
结论:
- 开发的光热机械系统成功地满足了对微纳米卫星光电子有效载荷的苛刻要求.
- 优化的设计确保了在发射和轨道运行期间的高结构稳定性和光学性能.
- 轨道成像验证证实,所有技术规格都得到了满足.
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