介绍了一种超大口径、长焦距、折反式光学系统的新型敏感器。为验证其结构设计的可靠性和稳定性, 使用大型通用有限元软件MSC Patran建立了整机有限元分析模型, 用MSC Nastran对其进行了模态分析和随机振动分析。分析结果表明, 星敏感器性能稳定可靠, 可对一些关键部件的设计提供理论依据。

One kind of star sensor with heavy-calibre, long-focus and refraction-reflection optical system is introduced. In order to verify the reliability and stability of the star sensor, MSC Patran is used to create the FEM model, the mode and sinusoidal vibration analysis of the structure are performed by MSC Nastran. The analysis result shows that the star sensor is reliable and steady, and the theoretical foundation can be provided for some design of critical components.