【正文】 ople’s consumption demand for various types of paper is increasing， thus the machine automation control requirements have bee more sophisticated． Accordingly, this paper bined the paper machine production process and its working process， analyzed design requirements of the machine to its electric transmission control system． and in accordance with the requirements of the control system， analysis and study of the various segments of the control principle to draw the corresponding control program． This paper used more mature overall design structure at home and abroad that is the three level control work， inverter and motor and related control devices constitute the first control level， data munication via ProfibusDP with the core unit of entire control system that is the second control level PLC， PLC not only via ProfibusDP and the scene of the operation panel for data munication in order to achieve realtime control， but also by high— speed industrial Ether connect to the third control level that is the host puter management operations control room． Finally, the paper designed the electric drive control system of paper machine based on Fieldbus． The designed of the control system to solve the problem of the overall plex control system of the machine being is difficult to control． The designed system has been put into the actual production running， paper machine speed has been further improved， meet the requirements of machine control systems and has high stability and reliability, improved the production efficiency and effectiveness of enterprise， promoted the level of development of paper industry automation technology, so the design and the results of research for this system have the value to promote in industrial applications． KEY WORDS： fieldbus； inverter ； ProfibusDP； PLC 3 目錄 1 摘 要 ................................................................. I 1 abstract ............................................................ II 1 緒論 ................................................................. 1 1引言 .............................................................. 1 選題背景與研究意義 ............................................. 1 國內(nèi)外發(fā)展現(xiàn)狀及趨勢 ........................................... 2 本文研究主要內(nèi)容 ............................................... 4 2 紙機工藝概述及對控制系統(tǒng)的要求 ....................................... 5 紙機生產(chǎn)工藝的介紹 ............................................. 5 紙機生產(chǎn)能力的計算 ............................................. 8 紙機功率的計算 ................................................. 9 紙機的技術(shù)參數(shù) ................................................ 10 紙機對控制系統(tǒng)的要求 .......................................... 11 本章小結(jié) ...................................................... 13 3 現(xiàn)場總線技術(shù)的分析及應(yīng)用研究 ........................................ 14 現(xiàn)場總線技術(shù)的概述 ............................................ 14 現(xiàn)場總線系統(tǒng)的特點及優(yōu)點 ...................................... 15 PROFIBUS 的通信模型 ............................................ 16 現(xiàn)場總線的通信協(xié)議 ............................................ 16 PROFIBUSDP的協(xié)議 ............................................. 18 PROFIBUS 傳輸技術(shù)介紹 .......................................... 19 PROFIBUS 電纜的傳輸 ...................................... 19 光纖的傳輸 ............................................... 20 RS485串行通信接口 ...................................... 20 PROFIBUS 插頭及使用 ...................................... 21 PROFIBUSDP系統(tǒng)的 總線訪問控制 ................................. 22 PROFIBUSDP 系統(tǒng)組成 ..................................... 22 4 PROFIBUSDP 系統(tǒng)的總線訪問控制 ........................... 23 PROFIBUSDP系統(tǒng)的工作過程 ..................................... 24 基于 PROFIBUSDP的紙機電氣傳動數(shù)據(jù)的傳輸 ...................... 25 DP 從站數(shù)據(jù)的讀取 ........................................ 27 DP 從站數(shù)據(jù)的寫入 ........................................ 28 數(shù)據(jù)通信部分程序編寫 ..................................... 28 PROFIBUSDP 主從站的通信及組態(tài) ................................ 29 PROFIBUSDP 主從站通信的介紹 ............................ 29 PROFIBUSDP 主從站通信的組態(tài) ............................ 29 本章小結(jié) ..................................................... 31 4 紙機傳動控制系統(tǒng)的硬件設(shè)計及選型 .................................... 33 PLC 控制系統(tǒng)設(shè)計方法 ........................................... 33 PLC 的硬件選型 ................................................. 35 CPU 的選型 ............................................... 35 電源模塊選型 ............................................. 36 I/O 模塊選型 ............................................. 36 接口模塊選型 ............................................. 39 變頻器的特點及工作原理 ........................................ 40 變頻器的選擇與容量的計算 ...................................... 41 變頻器的容量計算 ......................................... 41 變頻器的類型選擇 ......................................... 43 變頻器的主要控制功能 .......................................... 44 頻率設(shè)定功能 ............................................. 44 PID 控制功能 ............................................. 44 制動控制功能 ............................................. 45 網(wǎng)絡(luò)通信功能 ............................................. 45 主 /從宏功能 .............................................. 45 變頻器外圍部分的硬件設(shè)計 ...................................... 46 變頻器主要運行參數(shù)的設(shè)定 ...................................... 48 5 ................................................... 50 本章小結(jié) ...................................................... 52 5 基于現(xiàn)場總線的紙機電氣傳動控制系統(tǒng)的設(shè)計 ............................ 53 整體結(jié)構(gòu)的設(shè)計 ................................................ 53 S7300 CPU 部分的設(shè)計 .......................................... 55 PLC 與 0P27 之間的通信 .......................................... 56 速度鏈的設(shè)計及控制 ............................................ 57 負荷分配的 控制 ................................................ 60 張力控制 ...................................................... 63 紙機的實際生產(chǎn)運行狀況 .....................