directional moving control

基本解释

Directional control valves can be used for controlling direction of oil flow so as to operate start up, stop and moving direction of actuators in a hydraulic circuit.
在液压系统中控制油方向，控制执行元件的启动、停止及运动方向。按操作方式分为：电磁、电液、液控、手动、凸轮等方式。
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Tht article GPS positioning technology, DC servo technology, research and design a set of moving targets can implement automatic tracking of the directional antenna control system.
文章以GPS定位技术、直流伺服技术为基础，研究设计一套能够对移动目标实行自动跟踪的定向天线控制系统。