In order to observe the polarization properties of the neutral region of the atmosphere and to obtain the STOKES parameters of the atmospheric polarization,a high precision and accurate positioning observation control system is designed for the atmospheric polarization observation system.The system using position type high precision angle encoder,the implementation of the atmospheric observing system location of high precision measurement,observation system of azimuth and elevation control object by means of transfer function measurement,and uses the classical PID control strategy,the position and the velocity of observation system realizes the double closed-loop control of high precision,and validated by some experiments,the results show that,the precision control system running position servo accuracy in the range of 0.002°,can meet the requirements of the atmospheric polarization observations of orientation measurement system.%为观测大气中性区域的偏振特性,获取大气偏振STOKES参量,为大气偏振观测系统设计了一种高精度精确定位观测控制系统.该系统利用位置式高精度角度编码器,实现对大气观测系统的位置高精度测量,通过对观测系统的方位与俯仰控制对象传递函数的测量,并采用PID控制策略,对观测系统的位置和速度实现了高精度双闭环控制,并进行了相关实验验证,结果表明,该精密控制系统运行位置伺服精度在0.002°范围内,满足大气偏振观测系统定位测量要求.
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