大口径反射镜分析驱动设计与优化  

Analysis Led Design and Optimization for Large Aperture Mirror

作　　者：胡海飞[1,2] 关英俊[3] 赵思宏[4] 郑立功[1,2] 

机构地区：[1]中国科学院长春光学精密机械与物理研究所,长春130033 [2]中国科学院光学系统先进制造技术重点实验室,长春130033 [3]长春工业大学机电工程学院,长春130012 [4]空军航空大学作战指挥系,长春130022

出　　处：《系统仿真学报》2013年第5期990-994,共5页Journal of System Simulation

基　　金：国家973计划(2011CB013205)

摘　　要：提出基于高精度有限元分析和优化算法的分析驱动设计方法,实现了大口径反射镜的快速设计。首先使用商业CAD软件设计反射镜的概念模型,其模型的构型只受少数关键参数控制。然后针对概念模型进行高精度有限元分析,得到能够权衡计算精度和计算代价的有限元模型。接着对反射镜的概念模型进行布局优化设计。最后提出反射镜的详细模型,并对其进行参数优化设计。该设计流程通过Isight平台集成后自动运行,并回避了传统上光机结构设计流程依赖于几何模型的不足。基于该集成流程,设计了一个1.5 m口径反射镜,分析得到其面形PV值小于λ/12,RMS值小于λ/56(λ=632.8 nm)。设计结果表明,该方法具有很高的设计效率和实用性。Analysis Led Design method, driven by high precision finite element analysis （H-FEA） and optimization algorithm, was introduced for the fast design of large aperture mirror. Firstly, the mirror＇s abstract model, whose configuration depended on several geometric parameters, was drawn by commercial CAD software. Then, the H-FEA was carried out to get the adequate FEA model by considering both computational precision and cost. With the very FEA model, layout optimization of the abstract model was implemented to update the CAD model. Finally, the mirror＇s detailed model was drawn and optimized parametrically. All procedures and iterations were driven automatically in an automatic integrated flow without manual interruption. A 1.5m aperture mirror design example, achieving λ/12 PV and λ/56 RMS （λ=632.8 nm）, shows the high efficiency of the method.

关 键 词：大口径反射镜 分析驱动设计 概念模型 结构优化 快速建模 

分 类 号：TU311.41[建筑科学—结构工程] TP391.9[自动化与计算机技术—计算机应用技术]