基于自适应遗传算法的摆镜动态优化设计  

Dynamic optimization of tip/tilt mirror based on adaptable genetic algorithm

作　　者：王洪伟[1,2] 阮萍[1] 徐广州[1] 薛彬[1] 

机构地区：[1]中国科学院西安光学精密机械研究所,陕西西安710068 [2]中国科学院研究生院,北京100049

出　　处：《红外与激光工程》2012年第2期506-512,共7页Infrared and Laser Engineering

基　　金：国家自然科学基金(60808028)

摘　　要：为了满足正弦摆动过程中较高面型精度,实现相关跟踪系统摆镜的高度轻量化设计,在直径110 mm圆平面反射镜的设计过程中引入了基于自适应遗传算法的摆镜结构优化。对背部粘结支撑点的大小进行了计算,同时对摆镜的有限元模型进行了轴对称的简化,提高了优化过程中的效率。介绍了自适应遗传算法结构优化的原理及优越性,并提出了两种正弦振动过程中的面型求解方案。最后将自适应遗传算法的结果与传统算法进行了比较。结果证明,基于自适应遗传算法的摆镜动态参数优化方案正确可靠,具有较高的寻优能力,对类似工程结构参数优化具有一定的指导性与借鉴性。In order to meet the strict requirement of surface-shape and realize the ultra-lightweight design of a tip/tilt mirror,the adaptable genetic algorithm optimization method was introduced into the design of a φ110 mm round mirror.The size of support part was figured out.Meanwhile,the finite element model was simplified with axisymmetric method,and the efficiency was improved.Structure optimization principle of adaptable genetic algorithm was proposed,and its advantage was introduced.Tow method of calculating surface profile in sinusoidal vibration process was advanced.Compared with other traditional method,structure optimization based on adaptable genetic algorithm was correct and reliable.Results show that it has strong overall search ability,and has significance instructive and reference for optimization of similar engineering structures.

关 键 词：遗传算法 摆镜 动态优化 轻量化 

分 类 号：V411[航空宇航科学与技术—航空宇航推进理论与工程]