Direct control of hydraulic servo valve by means of PLC can simplify the control of hydraulic system and reduce cost.
采用可编程控制器(PLC)直接控制液压伺服阀，可以简化控制系统，降低成本。
The method of direct control of hydraulic servo valve by means of PLC, the component parts of the control system and the driving interface circuits were described mainly in this paper.
文章主要介绍PLC对液压伺服阀的控制方法及控制系统的组成，说明驱动接口电路的连接。
The installation of position transducer in hydraulic AGC cylinder has direct effect on the resolution, accuracy control, response time and maintenance of the hydraulic AGC system.
位移传感器的安装结构是否合理，直接影响轧机液压辊缝控制系统的分辨率、控制精度、响应时间和维护。
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