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空间遥感相机长条反射镜较圆反射镜的整体刚度相差很大,整个组件在随火箭发射过程中因力学环境引起的自身位置改变导致面形的微小畸变从而对成像质量造成严重影响。因此,反射镜组件的设计就成为整个相机系统研制的重点与难点之一。对其进行科学、严谨的力学环境仿真是设计中的有效辅助手段。对某相机的长条反射镜组件动力学响应进行了较为深入的研究,借助MSC-patran,用有限元法进行了求解。获得了组件的动力学特性。
The overall stiffness of the long-range mirror is much different from that of the circular mirror. The whole component has a serious impact on the image quality due to the small deformation of the profile due to the change of position caused by the mechanical environment during the rocket launching. Therefore, the design of the mirror assembly has become the focus of the entire camera system development and one of the difficulties. Its scientific and rigorous simulation of mechanical environment is an effective aid to the design. The dynamics response of the long mirror assembly of a camera has been studied in more depth. The finite element method is used to solve the problem with MSC-patran. Obtained the dynamic characteristics of the components.