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文章应用集成建模思想对某型高分辨率空间相机进行了微振动影响的结构-光学集成分析。首先分别建立了该空间相机的微振动载荷模型、结构有限元模型和光学系统模型。然后对微振动载荷作用下的结构有限元模型进行动力学分析,获得空间相机各光学元件的响应位移,并输入到Code V光学模型中做光学系统仿真分析,得出MTF下降和像移情况。通过结果数据的对比分析表明,空间相机对沿坐标轴平动和转动的6种微振动载荷具有不同的响应敏感性,为改进设计、隔振抑振提供了参考。
The article applies integrated modeling idea to the micro-vibration structure of a high-resolution space camera: optical integrated analysis. Firstly, the micro-vibration load model, the structure finite element model and the optical system model of the space camera are respectively established. Then the dynamic finite element model of the structure under the micro-vibration load is analyzed and the response displacement of each optical element of the space camera is obtained. The displacement is input into the Code V optical model to do the optical system simulation analysis, and the MTF drop and image shift are obtained. The comparative analysis of the result data shows that the space camera has different response sensitivity to the six kinds of micro-vibration loads along the axis of translation and rotation, which provides a reference for improving the design and vibration isolation.