基于PLC過(guò)程控制系統(tǒng)的研究

電氣自動(dòng)化論文編號(hào):ZD481  論文字?jǐn)?shù):23637,頁(yè)數(shù):47，有開(kāi)題報(bào)告，任務(wù)書(shū)，文獻(xiàn)綜述
目   錄
摘  要  Ⅰ
Abstract Ⅱ
第1章 緒 論 1
1.1計(jì)算機(jī)過(guò)程控制系統(tǒng)的發(fā)展 1
1.2 PLC控制的發(fā)展 2
1.3可編程控制器趨勢(shì)的發(fā)展 2
 1.4組態(tài)軟件的概述 4
 1.4.1組態(tài)軟件的發(fā)展趨勢(shì) 4
 1.4.2西門(mén)子WINCC的概述 4
 1.4.3混合控制系統(tǒng)與組態(tài)軟件 5
1.5設(shè)計(jì)的任務(wù)與目的 6
第2章 鍋爐控制 7
2.1鍋爐設(shè)備 7
2.2鍋爐控制的特點(diǎn)和難點(diǎn) 8
 2.3 鍋爐的控制系統(tǒng) 8
 2.3.1 給水控制系統(tǒng) 10
 2.3.2 燃燒控制系統(tǒng) 11
第3章 控制系統(tǒng)的硬件組成 13
3.1 主電路圖的設(shè)計(jì) 14
 3.1.1 電路圖 14
 3.1.2 變頻調(diào)速原理 14
 3.1.2.1 變頻器的主電路 14
 3.1.2.2 變頻調(diào)速的優(yōu)點(diǎn) 15
3.2上位機(jī)人機(jī)交互設(shè)備的選型 16
3.3. PLC及其擴(kuò)展模塊的選型 16
 3.3.1 PLC選型 16
 3.3.2 SIMATIC S7-300 PLC 17
 3.3.3模擬量輸出/輸入擴(kuò)展模塊 18
3.4現(xiàn)場(chǎng)總線技術(shù) 19
 3.4.1現(xiàn)場(chǎng)總線技術(shù)在鍋爐監(jiān)控系統(tǒng)中的應(yīng)用 19
 3.4.2現(xiàn)場(chǎng)總線技術(shù)的基本概念 19
 3.4.3現(xiàn)場(chǎng)總線的網(wǎng)絡(luò)與通信基礎(chǔ) 20
 3.4.4西門(mén)子公司的PROFIBUS現(xiàn)場(chǎng)總線技術(shù) 20
3.5傳感器 21
第4章 系統(tǒng)軟件設(shè)計(jì) 22
4.1監(jiān)控系統(tǒng)的任務(wù) 22
4.2WinCC組態(tài)軟件概述 22
4.3系統(tǒng)界面的設(shè)計(jì)和動(dòng)作 24
 4.3.1組態(tài)變量 24
 4.3.2創(chuàng)建過(guò)程畫(huà)面 25
 4.3.3改變畫(huà)面的對(duì)象屬性 27
 4.3.4報(bào)警記錄 28
 4.3.5變量記錄 30
 4.3.6系統(tǒng)總體圖 30
第5章 系統(tǒng)調(diào)試與運(yùn)行 32
5.1系統(tǒng)總體結(jié)構(gòu) 32
5.2 系統(tǒng)調(diào)試 33
 5.2.1連線 33
 5.2.2調(diào)試 33
第6章 系統(tǒng)的通訊實(shí)現(xiàn) 35
6.1現(xiàn)場(chǎng)總線與系統(tǒng)監(jiān)控軟件之間橋梁——OPC 35
6.2視窗控制中心(WinCC)與PLC之間的通訊 36
6.3 S7-300 PLC與WINCC之間的通訊實(shí)現(xiàn) 37
結(jié)束語(yǔ) 39
參考文獻(xiàn) 40
致謝 41

摘要：本文主要闡述了用過(guò)程控制的方法對(duì)鍋爐進(jìn)行控制，通過(guò)組態(tài)和編程，使系統(tǒng)能根據(jù)生產(chǎn)負(fù)荷的需要，供應(yīng)一定壓力的和溫度的蒸汽，同時(shí)使鍋爐安全經(jīng)濟(jì)的條件下運(yùn)行，實(shí)現(xiàn)控制要求。為了提高生產(chǎn)效率，保持穩(wěn)定可靠運(yùn)行，提供便利的監(jiān)控手段，采用了PLC和組態(tài)軟件控制，配置靈活，控制協(xié)調(diào)，性能可靠，使系統(tǒng)達(dá)到更高的自動(dòng)化水平。
 論文內(nèi)容包括對(duì)過(guò)程控制系統(tǒng)發(fā)展和現(xiàn)狀的綜述;過(guò)程控制系統(tǒng)工作原理及總體設(shè)計(jì);重點(diǎn)描述了硬件設(shè)計(jì),軟件設(shè)計(jì)西門(mén)子WinCC制作界面的細(xì)節(jié)及在上位監(jiān)控系統(tǒng)的一些基本設(shè)計(jì),以及PLC與上位機(jī)之間的通訊。最后對(duì)在這次設(shè)計(jì)中獲得的結(jié)論與感受作為論文的結(jié)束。
 此系統(tǒng)的監(jiān)控清晰明確，準(zhǔn)確把握系統(tǒng)當(dāng)前的運(yùn)行情況，提高系統(tǒng)的監(jiān)控能力，簡(jiǎn)化了系統(tǒng)監(jiān)控的操作，減輕了工人的勞動(dòng)強(qiáng)度；同時(shí)對(duì)現(xiàn)場(chǎng)重要參數(shù)進(jìn)行設(shè)定，保證了系統(tǒng)運(yùn)行的可靠，將現(xiàn)場(chǎng)誤操作的影響減小到最低程度。是一個(gè)高水平的自動(dòng)化控制系統(tǒng)。
關(guān)鍵詞：PLC；過(guò)程控制；組態(tài)軟件；WinCC。  

 Research on the Basis of PLC 
 Process Control System
Abstract： This text has explained mainly that controls the boiler with the method that the course controls, through the configuration and programming, enable system according to the needs of production load, the steam of temperature of supplying certain pressure, make the condition of the safe economy of the boiler run at the same time, realize the control request. In order to improve production efficiency , remain stable and run reliably , offer the convenient supervision method, having adopted PLC and configuration software to control, it is flexible to dispose , control and coordinate , performance is reliable , make the system reach higher automatic level.
 The content of the thesis includes to the control system development of the course and survey of the current situation ; Control system operation principle of the course and designing overallly; Describe hardware design , software design detail to make interface , WinCC of Siemens , go to some general designs , location of monitoring system especially, and PLC and going to the communication between the location machines. As the end of the thesis to the conclusion and feeling that are obtained in this design finally. The control of this system is clear and clear, hold the running situation with present system accurately, improve systematic control ability , the operation that the reduced system controls, has lightenned workers' labour intensity; Establishing the important parameter of scene at the same time, what the security system is operated is reliable , reduce the influence operated by mistake at the scene to minimum extent. It is a high-level automatic control system.
The keyword： PLC; Process controlling; Configuration software; WinCC.