Abstract

In this paper, the biaxial flexural mount is presented according to the requirements of the large aspect ratio mirror of an off-axis three-mirror anastigmatic (TMA) space-borne telescope, and the process of the optimal design of the flexural mount structure is discussed in detail. From the perspective of mechanics-based design of space-borne mirror assembly structure and integrated optical-mechanical analysis, the optimal axial mounting position, the optimal mounting angle and the optimal structural critical dimensions of the flexure hinge were determined to improve the surface shape accuracy. Finally, the mechanical vibration test further proved the rationality of the structure design and the accuracy of the simulation analysis. The flexural mount proposed in this paper is can be applied to other reflective optics with high surface figure requirements. The optimization method proposed in this paper can also be applied to the optimization of other forms of flexural mount.

摘要

本文针对离轴三反像散(TMA)星载望远镜大纵横比镜的要求，提出了双轴挠曲支架，挠曲支架结构优化设计的过程为详细讨论。从星载反射镜组装结构的力学设计和光机一体化分析的角度，确定了柔性铰链的最佳轴向安装位置、最佳安装角度和最佳结构临界尺寸，以提高面形精度. 最后，机械振动试验进一步证明了结构设计的合理性和仿真分析的准确性。本文提出的弯曲安装座可应用于其他具有高表面图形要求的反射光学元件。本文提出的优化方法也可以应用于其他形式的弯曲支架的优化。