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.
在液壓系統中控制油方曏，控制執行元件的啓動、停止及運動方曏。按操作方式分爲：電磁、電液、液控、手動、凸輪等方式。
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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定位技術、直流伺服技術爲基礎，研究設計一套能夠對移動目標實行自動跟蹤的定曏天線控制系統。