城市供水系统的PLC控制

PLC control of city's water supply system

针对城市供水系统的关键环节——压力供水泵站中水泵的控制问题， 提出了采用具有滞环的继电器型非线性控制理论对水泵进行逻辑控制的方法， 设计了一个切实可行的硬件电路。以 ＰＬＣ 作为逻辑控制单元。

In view of the water pump control in pressurized water supply pump station which is the key part in the city's water supply system, it was proposed that relay type non linear control theory with hysteresis loop should be adopted for logical control of water pump. A practical hardware circuit was adopted in which PLC is used as logical control unit, and control software was compiled.