摘要
可编程控制器是当代工业自动化的主导产品之一,设计一个串级双回路水位控制系统:PLC起调节器的功能:一方面,它可与差压传感器相连,获取输入信号,比较测量水位值和设定值,得到偏差,通过对偏差的处理获得控制信号;PLC输出信号直接控制电机转速,从而达到控制水位的目的。另一方面,它又与计算机通讯,实现计算机的监控。
Modern industrial automation PLC is one of the leading products,to design a double-loop cascade level control system：PLC functions from the regulator,on the one hand,it can be connected with the differential pressure sensor to obtain the input signal,comparing the measured values and the water level settings,have bias,obtained by the treatment of bias control signal;PLC output signals directly control the motor speed,so as to achieve the purpose of controlling the water level.On the other hand,it with the computer communications,monitoring by computer.
出处
《电子质量》
2011年第2期50-51,共2页
Electronics Quality
关键词
可编程控制器
变频调速
串级控制
Programmable controller
frequency conversion
serial control
