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KeywordsPLCfreque
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tpressurewatersupply
III
f河南城建学院毕业设计
目录
目录
1绪论111研究背景1
2系统的理论分析及方案的确定421调速方式的比较与选择422控制系统方案623供水系统的控制流程824变频恒压供水系统中加减水泵的条件分析10
3变频恒压供水系统的硬件设计1131PLC选型及接线11311PLC选型11312PLC的接线及IO分配1432水泵机组选型1533变频器选型及接线16331变频器选型16332变频器的接线1934PID调节器2035压力传感器2236系统主电路设计r