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针对高速运动的车辆对光电系统的需求,提出利用快速反射镜代替原有平面反射镜,构建上反射镜式光电系统复合轴稳定平台,并通过理论分析,推导出该平台的瞄准线矢量方程,分析瞄准线的运动特性、复合轴稳定补偿原理及控制方法,并且比较了其与传统一级稳定平台在系统带宽、隔离度方面差异,最后,针对实际工程应用,研究复合轴二级平台轴系安装误差对系统误差的影响。研究结果表明:上反射镜式光电系统稳定复合轴平台实现了对一级平台稳定误差的补偿,系统带宽接近快速反射镜带宽,约为200 Hz,大幅度提升了系统稳定精度,但是系统对二级平台的安装误差相对比较高,其误差需要小于0.05 mrad。
In order to meet the demand of photovoltaic system for high-speed vehicles, a fast mirror is used to replace the original plane mirror to build a composite shaft stabilized platform of the upper mirror-type photoelectric system. The theoretical vector equation of the line of sight of the platform is deduced through theoretical analysis. Analyze the motion characteristics of the line of sight, the compensation principle and the control method of the composite shaft stability, and compare the difference between the system and the traditional first-class stable platform in system bandwidth and isolation. Finally, according to the practical engineering application, Influence of installation error on system error. The results show that the stability of the first-stage platform is compensated by the stabilized composite shaft platform of the upper mirror photoelectric system, the bandwidth of the system is close to the fast-reflector bandwidth of about 200 Hz, which greatly improves the stability of the system. However, The installation error of the platform is relatively high, and its error needs to be less than 0.05 mrad.