双容液位串级控制系统的设计与研究

电子机电论文编号:JD609  附开题报告,论文字数:31708,页数:45

目录
摘要 1
Abstract 2
引言 4
第1章 绪论 5
1.1 课题来源，背景及意义 5
1.2 THSA-1型过控综合自动化控制系统简介 6
1.3 智能仪表的应用及未来发展趋势 9
1.4 课题研究的内容及论文安排 10
第2章智能仪表控制介绍 10
2.1  智能仪表的简介 10
2.2 硬件组成 13
2.3 系统硬件结构和工作过程 13
2.4 系统软件设计 14
2.5 本章小结 16
第3章 MCGS组态软件的介绍 16
3.1 什么是MCGS组态软件 16
3.2  MCGS组态软件的系统构成 17
3.3  MCGS组态软件的功能和特点 18
3.4 MCGS组态软件的工作方式 19
3.5 MCGS组态软件常用术语 20
3.6  MCGS组态软件的操作方式 21
3.7 建立MCGS新工程 22
3.7.1  设计画面流程 23
3.7.2 整体画面 26
3.8 本章小结 28
第4章 液位串级控制系统分析与建模 29
4.1 串级控制系统 29
4.2 液位控制系统 31
4.3 建模方法 32
4.4 系统建模 32
4.5 系统特性测试 33
4.6 模型最终确定 34
4.5 本章小结 35
第5章 系统的PID参数整定 36
5.1  PID概述 36
5.2 控制器参数整定 37
5.3  PID参数的确定 38
5.4 系统特性测试． 40
5.5 本章小结 41
结论 42
参考文献 43
致谢 44

摘要

在化学工业生产中，液位控制是一项非常重要的环节。本论文以过程综合自动化控制系统实验平台为研究背景，以智能仪表控制方法为主要工具，进行液位控制方法研究。随着科学技术的不断发展人们开始利用各种先进的仪器和技术组成计算机控制系统来代替人工复杂的控制操作，智能仪表控制便是其中一种非常好的控制方法。集自动控制技术、计算机技术、通信技术为一体的数字式控制智能控制一般具有极其丰富的运算功能，且使用灵活方便、图形或数字显示形象直观、运行安全可靠等优点，智能控制仪表越来越广泛的被应用于工业控制领域。
在控制算法方面，通过该实验平台并用智能仪表构成控制系统回路。然后根据系统具体的控制要求选择不同的控制算法，主回路选择PI调节器，副回路选择P调节器来实现对系统的整体控制，并通过工程整定法对调节器参数进行整定，使系统在正常工作的情况下很快进入稳定状态，达到令人满意的效果。
本课题的研究，有利于使我们掌握过程控制的一些基本知识和算法，为理论联系实际提供了良好的试验环境。

关键词：液位控制；串级控制；智能仪表控制；PID控制
                                                                       

Abstract

Provide in the chemistry industry, the control of the liquid is to relate to the important link.This  theory to synthesize to make automate the control system  experiment flat ground contain process for the sake of the study background, appear the intelligence to control the method for the sake of main parts of toolses, the technique that continues to open the exhibition control  method research.Along to have science to develop the person to beginning to make use of the pioneer of tool and dissimilarity technically arrives to draw up the calculator control system to arrive to replace the artificial complicated control operation constantly, the intelligence appears to control the woulds is a very fine control method.The numerical type that gathers the automatic control technique, calculator technique, the correspondence technique as integral whole controls the intelligence control to have very and abundant operation function generally, and vivid convenience, sketch or numerals of usage manifestation the image keeps the view and circulates safe credibility etc. advantage, intelligence control appearance more and more extensively of is apply to control the realm in the industry.
At the appearance calculation road that control, has been should experiment the flat ground goes to offset the intelligence to appear to draw up to control the system behind of track.Then request to choose the different control  calculation road according to the system of concrete control, the main part  track choice  PI modulator of behind, bad habit- the track choice the P modulator of behind arrive to complete all controls toward system, and carry on the back the long method of arrive to continue to open the exhibition to all of the modulator parameters to carry on the back the long through all of the engineerings, make the system input the stable emergence very very soon under the regular work of condition, attain the virtuous result.
The research of this topic, is beneficial to make we control some basic knowledge and the calculation road that process controls, the contact arrives the supply for the sake of the theories good and try at court the environment body last.

Key word: the control of the liquid of A; the string class control; the intelligence appears the control; the PID control