该双恒压供水控制系统是以PLC控制为核心，变频调速技术为基础，并结合压力传感器、变频器、水泵、继电器、接触器等组成。在此系统中，PLC将压力设定值与测量值的偏差经PID运算后得到的控制量作用到变频器，从而通过变频器控制水泵的转速调节管网的压力，实现恒压供水的目的-constant pressure of the water-control system based on PLC control at the core, VVVF technology as the foundation, and

基于PLC控制的船舶水源热泵空调系统，找了好久才找到啊-PLC-based control of the ship water source heat pump air conditioning system, look for a long time to find ah

毕业论文参考资料3：基于PLC的泵站供水控制系统的设计-Water Pump Station PLC based control system design

PLC工控泵控制流程图，PLC学习资料-The flow chart of PLC industrial control pump control, PLC learning materials