大尺寸长圆形反射镜刃状柔性支撑优化设计  

Optimization Design for Blade Flexure Mounting of Large and Long Circular Mirror

作　　者：杨利伟[1] 李志来[1] 辛宏伟[1] 关英俊[2] 

机构地区：[1]中国科学院长春光学精密机械与物理研究所,吉林长春130033 [2]长春工业大学机电工程学院,吉林长春130012

出　　处：《计算机仿真》2016年第4期250-254,共5页Computer Simulation

摘　　要：为了使大尺寸长圆形反射镜满足成像要求,设计了一种柔性支撑方案,并利用参数优化的方法进行了优化设计。首先,对柔性支撑卸载热载荷与重力载荷的原理进行了论述,指出了大尺寸反射镜柔性支撑设计的难点;其次,根据反射镜的特点及支撑形式,选择刃状柔节作为柔性支撑;然后,根据优化流程,开展了刃状柔节的优化设计;最后,得到了主镜面形畸变RMS值、镜体刚体位移以及组件一阶自然频率随刃状柔节几何参数及刃片角的变化规律,并从中获得的最优结果。优化结果满足设计要求,表明了刃状柔性支撑结构合理,制定的优化方案可行。In order to meet imaging requirements of large and long circular mirrors, we designed a flexure mounting, and launched an optimization design by parameter optimization. Firstly, the principle of flexure mounting unloading thermal and gravitational loads was introduced, and the difficulty in designing flexure mount of large mirror was stated. Secondly, blade flexure was selected as flexure mounting aeeording to mirror feature and supporting form. And then, optimization design of blade flexure was launched according to the flow chart. Last, the regularity of RMS value of surface error, displacement and first natural frequency change with blade flexure parameters or blade angle was obtained, and optimal results were extracted. The optimization results can meet the design requirements, which indicates that the structure of blade flexure mounting is reasonable and the optimization plan for blade flexure mounting is feasible.

关 键 词：长圆形反射镜 柔性支撑 刃状柔节 刃片角 优化设计 

分 类 号：V447.3[航空宇航科学与技术—飞行器设计] TH703[机械工程—仪器科学与技术]