基于台达PLC的水箱液位串级控制系统

摘要

本文介绍了2015年第二届台达杯高校自动化设计大赛的一个一等奖设计作品。通过对设计过程的回顾，总结了水箱液位串级控制方案总体的设计理念和设计方法。运用机理建模建立被控对象数学模型，通过对PLC下装程序，对触摸屏进行组态，采用PID串级控制，实现了对双容水箱液位快速、稳定、准确的控制。通过用simulink分别对串级控制和单回路控制进行仿真，响应曲线控制效果对比十分明显，当被控对象难以控制时体现了串级控制的优势。%Awork of 2015 Tai Da Cup automation in university design competition was introduced. By reviewing the design process, the design concept and method of cascade control programme ofwaterlevel were summed up. Using mechanism modeling to establish the controlled object model, downloading program to PLC, configuring the touch screen, useing the way of PID cascade control, we implemented fast, stable and accurate the control of Double-water tank’s water level.