現(xiàn)場總線控制系統(tǒng)設(shè)計

電子機電論文編號:JD404字數(shù):15227.頁數(shù):41 

目   錄
緒  論......................................................................1
1.1研究背景 ................................................................1
1.2選題依據(jù) ................................................................1
第一章 現(xiàn)場總線概論.........................................................3
1.1現(xiàn)場總線的簡介 ..........................................................3
1.1.1 Profibus-PA總線 ......................................................3
1.1.2 Profibus-DP總線.......................................................4
1.2 現(xiàn)場總線控制系統(tǒng) .......................................................4
第二章 現(xiàn)場總線控制系統(tǒng)設(shè)計方案 ............................................5
2.1  系統(tǒng)硬件介紹 ..........................................................5
2.1.1  被控對象 ............................................................5
2.1.2  檢測裝置.............................................................5
2.1.3  執(zhí)行機構(gòu).............................................................6
2.1.4  控制器...............................................................6
2.1.5  空氣壓縮機 ..........................................................6
2.1.6  電源控制臺 ..........................................................7
2.1.7  總線控制柜...........................................................7
2.1.8  系統(tǒng)特點.............................................................7
2.2 S7-300簡介..............................................................8
2.2.1電源模塊 ..............................................................9
2.2.2 CPU模塊 ..............................................................9
2.3 ET200M分布式I/O模塊.....................................................9
2.4 系統(tǒng)軟件介紹 ...........................................................10
2.4.1  WINCC 概述...........................................................10
2.4.2  STEP 7簡介 ..........................................................10
第三章  計算機與PLC設(shè)備的連接 ..............................................12
3.1 以太網(wǎng)通訊模塊..........................................................12
3.2 工業(yè)以太網(wǎng)的構(gòu)成........................................................12
3.3 S7-300的工業(yè)以太網(wǎng)通信處理器 ...........................................12
第四章  系統(tǒng)設(shè)計項目的開發(fā) .................................................13
4.1  單回路控制系統(tǒng)的概述 ..................................................13
4.2  干擾對系統(tǒng)性能的影響...................................................13
4.2.1 干擾通道的放大系數(shù)、時間常數(shù)及純滯后對系統(tǒng)的影響......................13
4.2.2 干擾進入系統(tǒng)中的不同位置..............................................13
4.3 控制規(guī)律的選擇 .........................................................14
4.3.1比例(P)調(diào)節(jié)............................................................14
4.3.2比例積分(PI)調(diào)節(jié) ......................................................14
4.3.3比例微分(PD)調(diào)節(jié) ......................................................14
4.3.4比例積分微分(PID)調(diào)節(jié)器................................................14
4.4調(diào)節(jié)器參數(shù)的整定方法 ....................................................15
4.4.1經(jīng)驗法.................................................................15
4.4.2臨界比例度法 ..........................................................15
4.4.3衰減曲線法（阻尼振蕩法）...............................................16
4.4.4動態(tài)特性參數(shù)法.........................................................16
4.5上水箱液位PID整定........................................................16
4.5.1項目設(shè)計思想 ..........................................................16
4.5.2項目設(shè)計流程圖 ........................................................16
4.5.3項目設(shè)計程序...........................................................17
4.5.4項目設(shè)計畫面 ..........................................................19
4.6三容水箱液位定值控制.....................................................19
4.6.1項目設(shè)計思想 ..........................................................19
4.6.3項目設(shè)計程序...........................................................20
4.6.4項目設(shè)計畫面 ..........................................................22
4.7串接雙容水箱液位PID整定 .................................................22
4.7.1項目設(shè)計思想 ..........................................................23
4.7.2項目設(shè)計程序...........................................................23
4.7.3 項目設(shè)計畫面..........................................................24
4.8 小結(jié) ...................................................................25
第五章 項目設(shè)計調(diào)試過程 ....................................................26
5.1上水箱液位PID整定調(diào)試過程 ...............................................26
5.2三容水箱液位定值控制調(diào)試過程 ............................................26
5.3串接雙容水箱液位PID整定調(diào)試過程 .........................................26
結(jié) 束 語....................................................................28
致 謝.......................................................................29
參考文獻....................................................................30
附  錄  A ................................................................. 31
附  錄  B ................................................................. 34
附  錄  C ................................................................. 36

摘 要
    現(xiàn)場總線作為計算機技術(shù)、通信技術(shù)、儀表技術(shù)以及控制技術(shù)高度集成與綜合的產(chǎn)物。已成為當今自動化領(lǐng)域技術(shù)發(fā)展的熱點之一。它是連接智能現(xiàn)場設(shè)備和自動化系統(tǒng)的全分散、數(shù)字式、雙向、多變量、多點、多站的通信網(wǎng)絡(luò)。在眾多現(xiàn)場總線標準中，過程現(xiàn)場總線（PROFIBUS）以其國際化、開放式、高靈活性、高可高性等優(yōu)勢，在過程自動化、制造自動化、樓宇自動化等領(lǐng)域內(nèi)得到廣泛的應(yīng)用。
本文首先闡述了課題的研究背景與選題依據(jù)，之后提出現(xiàn)場總線概述、現(xiàn)場總線控制系統(tǒng)的硬件與軟件組成、計算機與PLC設(shè)備的連接、現(xiàn)場總線控制系統(tǒng)的調(diào)試。詳細的說明了現(xiàn)場總線控制系統(tǒng)。
本文還應(yīng)用到了WINCC和STEP7兩種軟件，WINCC軟件主要是做監(jiān)控畫面，對現(xiàn)場設(shè)備進行監(jiān)控；STEP7軟件設(shè)計程序，完成了對現(xiàn)場總線控制系統(tǒng)的調(diào)試。

關(guān)鍵詞：現(xiàn)場總線，PROFIBUS-PA總線，PROFIBUS-DP總線，現(xiàn)場總線控制系統(tǒng)

Abstract
    As the integrated product of computer technology, communication technology, instrument technology, and control technology, Fieldbus is one of the focuses of the current technical development in automatic field, Fieldbus is whole scattered, intelligent, bi-directional, interconnected, multivariable and multipoint communication network which connects intelligent working equipment with automatic system. PROFIBUS, as one of the international specifications of fieldbus, has been used extensively in automatization of processing, automatization of machining and automatization of building.