The control principle of control valve is introduced. The effect of characteristics of control valve on control system is analyzed. The selection principle of flow characteristic in tobacco thread production device is proposed based on technological property of tobacco equipment.%介绍调节阀的控制原理,分析调节阀流量特性对控制系统的影响,结合烟草设备的工艺特性,提出烟草制丝设备上调节阀流量特性选择的原则。
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