Through introducing azimuth speed to form the compound control of outer turret for improving tracking accuracy, the tracking performance of the outer turret is improved by all-digital PID and the accuracy of the deviation input for the slave tracking system is improved by CPLD techniques. 引入方位速度构成外转台复合控制提高随动精度,以全数字PID控制提高外转台的跟踪性能,采用先进的CPLD技术提高随动系统偏差输入量的精度。
In view of the problems existed in the slave system for the outer turret of a theodolite, a method for reforming the slave tracking system by combination of compound control, all-digital PID control and CPLD technique is proposed. 针对电影经纬仪外转台随动系统存在的问题,提出了一种采用复合控制、全数字PID控制和CPLD技术相结合来对其进行改造的方法。