文档介绍：毕业设计说明书
基于plc与组态王软件三容水箱研究
摘要
三容水箱是较为典型的非线性时延对象。工业上许多被控对象的整体或局部都可以抽象成三容水箱的数学模型,具有很强的代表性和工业背景,研究三容水箱的建模及控制具有重要的理论意义及实际应用价值。本文利用组态王软件对水箱液位实时监控系统进行设计及测试,具体介绍了该系统的组成、上位机界面的设计和测试的结果。实践证明,该系统图形界面友好,运行稳定,操作方便,提高了监控的质量。在实验时,主要利用PID控制三容水箱。采取采用临界比例度法整定PID控制器参数。上位监控部分由三维力控组态软件设计构成,可以实现对系统工作的实时监控并显示速度曲线。
关键词:组态王;水箱液位;监控系统;三容水箱;模糊PID控制
Abstract
Three-tank water is a typical non-linear and delayed plant which has a very strong background of industry, for the whole or part of many controlled objects can be extracted as mathematic model of three-tank water. Research on modeling and control of the three-tank water has a far theoretical significance and practical this paper, the water tank fluid position control system is designed and tested using Kingview. The structure of this system,the design of HMI and the result of experiment are introduced in the is proven that this system have features in friendly interface,running steadily,easy to operate and improved control this paper,the design is the main PID control three let water tank. we use the critical ratio control scheme to set the PID controller parameters, upper monitor software using three dimensional force control configuration software. which can make the system work in real-time and show speed curves.
Key words:Kingview;water tank fluid position;control system ;Three Tanks ;fuzzy PID control
目录
第1章绪论 1
第2章组态王系统 2
2
-2型仪表过程控制 3
3
4
4
4
5
第3章三容水箱系统的硬件结构 6
三容水箱的原理结构 6
三容水箱的操作步骤 7
第4章 PID控制的理论基础 7
PID控制原理 7
三容水箱控制方法 10
第5章双容水箱 16
16
运动分析 17
20
21
综合 22
第6章三容水箱数理模型的建立 24
24
25
25
第7章模型仿真和实验 28
仿真 28
29
第8章三容水箱PLC硬件设置 30
PLC特点概述 30
PLC工作原理 32
PLC组成结构 33
PLC编程 35
37
??? 40
总结 43
参考文献 43
致谢 45
第1章绪论
自20世纪30年代以来,自动化技术获得非常惊人的成就,已在工