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基于PLC楼栋恒压供水装置的设计与实现

Yanming Tang,Guangya Liu

Marine Electric & Electronic Technology(2020)

Cited 2|Views3
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Abstract
针对小区楼栋日常供水水压时常变化的特点,设计了一套恒压供水装置方案.该装置以可编程控制器(PLC)为控制核心,通过液位变送传感器把水槽压力值转换成实时模拟电信号,此信号经过FX2N-4转换模块进行A/D转换后,与设定值进行比较,偏差值在PLC内部通过PID回路指令运算,运算后的结果与脉宽调制(PWM)信号的占空比建立对应关系,并经PLC脉冲输出口输出PWM信号,实现对水泵的动态调速控制,实现恒压供水.
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