高精度光学系统光机热耦合分析方法与实现  

Opto-mechanical-thermal Coupling Analysis Method and Implementation of High-precision Optical System

作　　者：赵亮 张志刚 孙瑶 Zhao Liang;Zhang Zhigang;Sun Yao(AECC Beijing Institute of Aeronautical Materials,Beijing 100095,China;Shanghai Suochen Information Technology Co.,Ltd,Shanghai 201204,China)

机构地区：[1]中国航发北京航空材料研究院,北京100095 [2]上海索辰信息科技股份有限公司,上海201204

出　　处：《系统仿真学报》2023年第6期1381-1394,共14页Journal of System Simulation

摘　　要：高精度光学系统容易受到空间环境的影响,在高温、结构载荷等作用下光学系统像质变差,需要进行光机热耦合分析。但光学、结构、热学仿真等学科的独立发展,导致数据不能有效地耦合和传递。提出了一种跨学科耦合分析方法。采用集成分析思想,以多项式拟合为接口,解决了光学元件表面的不规则变形问题。通过最佳拟合刚体位移、最佳拟合曲率半径、多项式拟合等过程,实现了有限元分析工具与光学分析工具的耦合分析。以卡塞格林系统作为测试研究对象,验证了该方法的有效性。为评估在极端工况下光机系统的光学性能以及系统的设计优化提供了参考。High-precision optical system is easy to be affected by space environment.Under the condition of high temperature,structural load,etc.,the image quality of the optical system becomes poor,and the opto-mechanical-thermal coupling analysis is needed.Due to the independent development of the optical simulation,structure simulation,thermal simulation and others,the simulation data can not be effectively coupled and transferred.An interdisciplinary coupling analysis method is proposed,in which the integrated analysis idea is adopted and the polynomial fitting is used as the interface to solve the irregular deformation of optical element surface.Through the implement of the best fitting rigid body displacement,the best fitting radius of curvature,polynomial fitting,etc.,the coupling analysis between finite element analysis tool and optical analysis tool is realized.Taking Cassegrain system as the test object,the effectiveness of the method is verified.The method provides a reference to the optical performance evaluation of the optical-mechanical system and the design optimization of the system under extreme conditions.

关 键 词：卡塞格林系统 集成分析 光机系统 面形拟合 ZERNIKE多项式 光学评价 

分 类 号：TP317[自动化与计算机技术—计算机软件与理论]