为了校正激光发射设备中激光对准光路的偏差，设计了一种激光对准快速反射镜控制系统。采用步进电机作为驱动，控制快速反射镜在互相垂直的两个方向进行运动，校正激光光路的偏差，达到了精确控制激光光路的目的。对激光对准快速反射镜的工作原理和设计过程进行了详细阐述，并利用对准控制机箱等硬件设备对软硬件设计进行了实验验证，取得了较好的实验数据。结果表明，快速反射镜控制系统在小角度工作范围内方位误差和俯仰误差均方根都小于1″，即控制精度小于1″。该系统能够很好地控制快速反射镜进行2维运动，软件设计和硬件设计都是正确可靠的，能够满足激光对准控制系统精确控制激光光路的要求。

In order to revise the light-route deviation of a laser autocollimator, a fast reflector control system of fast reflector in laser autocollimator control was designed. By adopting a step motor as power element, the movement of fast reflector in 2-D way was controlled, the light-route deviation of laser was eliminated and the light route of laser could be controlled accurately. The hardware and software of the fast reflector control system were expatiated exactly. Using hardware such as the laser autocollimator control box, the hardware and software design of laser autocollimator control system were validated. The experimental results show that root-mean-square of both azimuth errors and elevation direction errors are less than 1″ when the working range of the fast reflector system is small, that is to say, the precision of fast reflector control system is less than 1″. Fast reflector control system can control the movement of fast reflector in 2-D way exactly. The hardware and software of the design is correct and reliable. The fast reflector control system can satisfy the demand of the laser autocollimator control system.