微小型滚仰式红外导引头光机轴系一体化设计  

Design of Micro-miniature Infrared Seeker with Roll-Pitch Structure

作　　者：马俊林[1] 邢妍[1] 高群[1] 杜杰[1] 刘英[1] MA Junlin;XING Yan;GAO Qun;DU Jie;LIU Ying(Changchun Institute of Optics,Fine Mechanics,and Physics,Chinese Academy of Sciences,Changchun 130033,China)

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

出　　处：《红外技术》2021年第5期411-416,共6页Infrared Technology

基　　金：吉林省科技发展计划项目(20180201048GX)。

摘　　要：针对导弹口径微小化的需求,为解决微小型导引头无法全方位扫描的问题,提出一种微小型滚仰式红外导引头光机轴系一体化结构。该光机结构把经典滚仰式导引头两根独立俯仰轴与光机结构本体设计成一体,通过红外探测器固定连接的方式让整体结构更加紧凑并兼具焦距微调功能,在保证成像质量的同时大大减小了光机结构的体积。将建模后的光机结构进行有限元热力耦合分析,在导引头温度、位置和角度等8组极限工作情况下,得到结构件和镜片的热变形。分析结果表明,提出的光机结构满足微小型(80 mm)、抗冲击(10g)和高低温(-40℃~60℃)工作要求,可以预测实际使用时的工作情况,对设计具有重要的指导意义。To meet the requirements of the micro-miniature air-to-air missile and solve the problem of not reaching full field angle,this paper presents a micro-miniature infrared seeker with roll-pitch structure,applying the integration philosophy of optical-mechanical structure and pitching shaft.Compared with the classic roll-pitch frame,this new structure combines two individual pitch shafts;additionally,the optical-mechanical structureusesonly one mechanical part,thus greatly reducing its size.Moreover,this new structure has a focus function that could improve the image quality.After structure design,we conducted thermo-mechanical coupling analysis on structure parts and lens under eight extreme conditions.The results show that the optical-mechanical structure meets the requirement of micro-miniature(80 mm),shock resistance(10g),and high low temperature test(-40℃~60℃).The simulated analysis can predict real conditions and has great guiding significance for optical-mechanical structure design.

关 键 词：红外导引头 滚仰式 有限元 仿真分析 

分 类 号：TH745[机械工程—光学工程]