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水箱液位控制系统设计毕业设计(论文).doc


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内蒙古科技大学
本科生毕业设计说明书毕业论文
题目水箱液位控制系统设计
学生姓名吴云鹏
学号200867112231
专业测控技术与仪器
班级测控08-2班
指导教师李刚助教
水箱液位控制系统设计
摘要
液位是工业工程中的常见变量在各种过程控制中的应用越来越广泛例如在食品加工溶液过滤化工生产等多种行业的生产加工过程中通常需要使用蓄液池而蓄液池中的液位需要维持一定的高度既不能太满溢出造成危险也不能过少而无法满足生产需求因此液位高度是工业控制过程中一个重要的参数特别是在动态的状态下采用合适的方法对液位进行检测控制能收到很好的效果
本文以实验室自制的双容水箱作为液位控制研究对象通过上位机研华的PCI-1710L板卡电动调节阀压力液位变送器组成的控制系统和压力液位变送器变频器水泵组成的控制系统分别实现了单容水箱的远程控制和就地控制并在文章最后理论性的阐述了双容水箱的控制方法
设计中以组态软件--组态王为开发工具开发了系统的监视与控制界面并且自己编程实现PID控制程序使系统具备了对现场过程数据的动态监视功能历史数据的归档功能异常信号的报警功能以及现场操作的指导功能
关键词水箱液位PID控制组态王design of the tank level control system
Abstract
The liquid level is one of mon variables in Industrial Engineering the process control is more and more widely used For example in the production process of food processing filtering solution chemical production and other industries liquid storage tank is usually used and making the liquid level of liquid storage tank at a certain height is very important neither too overflow to risk nor too short not to meet the production demand Therefore the height of liquid level in the industrial control process is one of the important parameters especially in the dynamic condition If adopt the appropriate method for the control of the liquid level detection we can get good effect
The research object is based on the self-made double tank level control system through the puter the Advantech PCI-1710L card the electric control valve the pressure liquid level transmitter the frequency converter and the water pump we get two different kinds of the cascade control system for the single water tank of the liquid level control respectively realized the effect of the remote control and local control And at last this article expounds the theory of double water tank control method
Choose the design of configuration software – King view for development tools we have had the development of the system to monitor and control interface and also have programmed PID control procedures that made the system has a field process data dynamic

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  • 时间2018-04-24