反射镜式光电系统光路内嵌复合轴稳定误差分析  

Stabilization error analysis of complex axes embedded into optical path for electro-optic system with upside mirror

作　　者：李红光[1] 彭富伦[1] 吴少博 于帅[1] 白创飞 LI Hongguang;PENG Fulun;WU Shaobo;YU Shuai;BAI Chuangfei(Xi’an Institute of Applied Optics,Xi’an 710065,China)

机构地区：[1]西安应用光学研究所,陕西西安710065

出　　处：《红外与激光工程》2024年第8期127-139,共13页Infrared and Laser Engineering

摘　　要：为满足各类装备平台对反射镜式光电系统光路内嵌复合轴高精度稳定的需求,针对实际研制中各类误差源相互耦合难以控制的难题,文中基于反射镜式光电系统光路内嵌复合轴稳定的原理,从理论上分析了快速反射镜角度与瞄准线角度关系线性化、陀螺和快速反射镜安装正交性误差以及快速反射镜测角精度对系统瞄准线稳定误差的影响,建立了瞄准线稳定误差与上述影响因素之间量化数学模型,并根据量化模型开展了计算仿真实验。仿真结果表明,在瞄准线稳定误差要求为2μrad级别时,快速反射镜角度与瞄准线偏转角度关系不能采用简化的线性化处理,陀螺安装误差应小于0.005 mrad,快速反射镜的安装误差应小于0.003 mrad,快速反射镜的测角精度应达到0.001 mrad。在实际应用中,在保证快速反射镜测角精度的基础上,应对陀螺和快速反射镜安装误差进行校准补偿,确保陀螺和快速反射镜安装误差产生的瞄准线稳定误差绝对值之和小于瞄准线稳定精度要求。Objective The photoelectric system with embedded mirror in optical path is one of the main means to achieve high precision stabilization.Due to the complex compensation principle of optical path embedded composite axis stability in the reflector photoelectric system and many error factors in each link of the system,there is a large gap between stability accuracy of the line of sight(LOS)and the actual theoretical value in the actual project development.In order to meet the high precision and stability demands of various weapon platforms for the optical path embedded composite axis of the reflector photoelectric system,and to solve the problem of difficulty in controlling the coupling of various error sources in practical development,this paper analyzes the influence of each error factor on the stability error of the system,in order to provide a theoretical basis for improving the stability accuracy of the composite axis with embedded mirror in the optical path.Methods Firstly,the system composition of the reflector type optical path embedded composite axis stabilization platform is introduced,and the coordinate systems related to the optical path embedded composite axis platform are established(Fig.2).Then,the stability principle of the system is analyzed,and the quantitative relationship between the angle of the mirror and the compensation angle error of the LOS is developed.Next,based on the above principles,the effects of the linearization of the relationship between the angle of the fast steering mirror(FSM)and the compensation angle error of the LOS,the orthogonality error between shafting and the angle measurement accuracy of the FSM,on the compensation angle error of the LOS are analyzed theoretically,and quantitative relationships between above influencing factors and the compensation angle error of the LOS are developed.Finally,based on these quantitative relationships,simulation verifications are carried out(Fig.3-18).Results and Discussions The compensation angle error of the LOS caused by the lineariz

关 键 词：反射镜式光电系统 光路内嵌复合轴 误差分析 瞄准线稳定 

分 类 号：TN201[电子电信—物理电子学] TN29