空间光学敏感器成像组件抗力学稳定性分析与评价

摘要： 成像组件是空间光学敏感器和光学相机的核心组件，其抗力学稳定性直接影响单机的测量精度.为了提高其抗力学性能，本文首先对成像组件结构进行了力学分析，并通过试验验证了分析方法的有效性.由于仿真分析只能对抗力学稳定性进行定性评价，本文设计了实验来定量评价，并提出了一种成像组件抗力学稳定性评价方法.最后，应用该评价方法对三种结构进行了抗力学稳定性分析、试验和测试.结果表明，本文提出的评价方法与力学仿真结合试验的评价方法对三种结构的评价结论是一致的.而本文的量化评价方法可以给出结构力学试验后的滑移值和机械基准变化值，为产品的研制提供数据参考.该方法可应用于对位置变化敏感的空间光学仪器的研制过程.

Mechanical Stability Analysis and Improvement ofImage Component for Space Optical Sensor

Abstract： Image component is the key of space optical sensor and camera. Therefore, the anti mechanical properties directly affect measurement accuracy. In order to improve the mechanical properties, mechanical analysis of the image component is carried out firstly, which indicates that stiffness and strength meet the requirement. Since simulation analysis can only be used to evaluate the stability qualitatively, experimental method is applied for quantitative evaluation in this paper. Accordingly, a mechanical stability evaluation method is proposed for image component, which includes two indicators, structure slip and optical axis change. Lastly, the evaluation method is applied for mechanical stability analysis, test and measurement. It is confirmed that the evaluation method proposed in this paper is consistent with the evaluation results of the three structures by simulation and experimental. The method can be applied to the space optical instruments which are sensitive to position changes. Keywords： space optical sensor; image component; mechanical stability; mechanical analysis; quantitative evaluation method