【正文】 合工業(yè)用 高爐上料自動 控制系統(tǒng)。國內(nèi)公司在開展 PLC 業(yè)務(wù)時(shí)有較大的競爭優(yōu)勢，如：需求優(yōu)勢、產(chǎn)品定制優(yōu)勢、 成本優(yōu)勢、服務(wù)優(yōu)勢、響應(yīng)速度優(yōu)勢。日本有許多 PLC 制造商，如三菱、歐姆龍、松下、富士等，韓國的三星（ SAMSUNG）、 LG 等，這些生產(chǎn)廠家的產(chǎn)品占有 80%以上的 PLC 市場份額。其中 ，美國是 PLC 生產(chǎn)大國，有 100 多家 PLC 廠商，著名的有 AB 公司、通用電氣（ GE）公司、莫迪康（ MODICON）公司。如今， PLC 技術(shù)已非常成熟，不僅控制功能增強(qiáng)，功耗和體積減小，成本下降，可靠性提高，編程和故障檢測更為靈活方便，而且隨著遠(yuǎn)程 I/O 和通信網(wǎng)絡(luò)、數(shù)據(jù)處理以及圖象顯示的發(fā)展，使 PLC 向用于連續(xù)生產(chǎn)過程控制的方向發(fā)展，成為實(shí)現(xiàn)工業(yè)生產(chǎn)自動化的一大支柱。卷揚(yáng)上料系統(tǒng)的主要過程是：各種原料經(jīng)過槽下配料后放入中間料斗，料車到料坑后，料斗把料放入料車，料斗閘門關(guān)到位后，料車啟動，到達(dá)爐頂。經(jīng)生產(chǎn)實(shí)踐表明，該設(shè)計(jì)思路正確，運(yùn)行可靠，能達(dá)到實(shí)際生產(chǎn)應(yīng)用的要求。早期的傳動調(diào)速控制方法多采用串極、直流或轉(zhuǎn)子串電阻調(diào)速控制方式，設(shè)備簡單，造價(jià)低，維護(hù)方便等特點(diǎn)。整個上料過程大部分是順序邏輯控制，涉及到一些模擬量控制，但沒有反饋，不構(gòu)成閉環(huán)過程控制，故而多采用可編程控制器（ PLC）進(jìn)行控制。工控機(jī)負(fù)責(zé)監(jiān)控和人機(jī)對話 ， PLC 和工控 機(jī)通過動態(tài)數(shù)據(jù)交換 ， 實(shí)現(xiàn)點(diǎn)對點(diǎn)通訊 ， 控制與監(jiān)控分開 ， 可靠性高 。本文簡要介紹了 PLC 系統(tǒng)在高爐上料自動控制中的應(yīng)用。 On the electrical design to ensure that the system has a certain number of check points, to ensure that the ining signal to the controller to be able to make an accurate processing and external control。 On the software to ensure the accuracy of the system reliability. Modern blast furnace automation refers primarily to the instrument and control system, electric control system and process and management with puter. The blast furnace San Dian integration. Iron and steel industry is one of China39。s heavy industry is a pillar industry of our country. Is an important link in iron making production of blast furnace, reliable and perfect feeding automatic control and data acquisition to the stable yield, reducing coking of blast furnace, improve the quality of production plays an important role. Iron and steel enterprises at home and abroad are now very concerned about the problem of the blast furnace production of how to improve the also are actively used automation system of blast furnace. Automation system of blast furnace mainly solve the problem of the following aspects: in the process to ensure that the automation system can correct carried out in accordance with the order material ingredients, and to send material to Ann regulations order of blast furnace。另外 STEP7支持便量表調(diào)試，把程序下載到 PLC 后可以利用便量表認(rèn)為賦值的方式來模擬現(xiàn)場數(shù)據(jù)的輸入 。 本系統(tǒng)主要設(shè)計(jì)的內(nèi)容包括： 用 STEP7 編程軟件對 S7200 PLC 進(jìn)行編程、下載?，F(xiàn)代高爐自動化主要是指儀表檢測及控制系統(tǒng)、電氣控制系統(tǒng)和過程及管理用的計(jì)算機(jī)。現(xiàn)在國內(nèi)外鋼鐵企業(yè)都非常關(guān)注高爐產(chǎn)量如何提高的問題，也都在積極應(yīng)用高爐上料自動化系統(tǒng)。 XXXVII 內(nèi)容摘要 ： 鋼鐵行業(yè)是我國重工業(yè)之一，是我國的支柱產(chǎn)業(yè)。 XXXIV 順序 功能圖 選型 XXVIII PLC 程序設(shè)計(jì)步驟 XXV 4 STEP 7 與軟件編制 XXV 其他硬件配置 XXIV XXIII 料位傳感器 — 高爐探尺 XXII XXI XVII XVI PLC 的選型 XV XIV PLC 的簡介 XIV 微型計(jì)算機(jī)的選擇 XII 3 控制系統(tǒng)的硬件設(shè)計(jì) XII PLC 的控制方式 XII 傳統(tǒng)控制方式 X 控制方式的確定 IX 高爐內(nèi)爐料還原反應(yīng)原理簡介 V PLC 控制系統(tǒng)的優(yōu)點(diǎn) V PLC 在自動控制中的現(xiàn)狀 V 高爐上料 PLC 自動控制的研究目的、意義 目 錄 1 緒論 VI PLC 的發(fā)展以及對高爐上料的進(jìn)一步革新 VII 2 控制系統(tǒng)總體方案設(shè)計(jì) IX 煉鐵工藝過程介紹 XI 操作方式 XI 設(shè)計(jì)概述 XV XVII XX 步進(jìn)電機(jī)的選擇 XXI XXII XXIV XXVIII 編程環(huán)境 XXX 編程語言 錯誤 !未定義書簽。 XXXI 擴(kuò)展模塊選型 錯誤 !未定義書簽。 XXXV 系統(tǒng)梯形圖 高爐上料是煉鐵生產(chǎn)的重要環(huán)節(jié)，可靠完美的上料自動控制及數(shù)據(jù)采集對于高爐的順利穩(wěn)產(chǎn)、降低焦化、提高產(chǎn)量質(zhì)量起著重要的作用。高爐上料 自動化系統(tǒng)主要解決以下幾方面的問題：在工藝上要保證自動化系統(tǒng)能夠正確的按照料單進(jìn)行配料，并且能安規(guī)定的順序把料送進(jìn)高爐；在電氣設(shè)計(jì) 上要保證系統(tǒng)有一定數(shù)目的檢測點(diǎn)，以保證給控制器能夠?qū)斎氲男盘栕?出準(zhǔn)確的處理并進(jìn)行對外控制；在軟件上要保證監(jiān)控系統(tǒng)的準(zhǔn)確可靠性。即高爐“三電”一體化。 STEP7 是一個功能強(qiáng)大的編程軟件，支持梯形圖、語句表、功能塊圖編程語言，并采用類似于高級語言的編程模式，把主程序、子程序和中斷程序進(jìn)行了模塊化，增加了程序的可讀性，使編程人員和現(xiàn)場調(diào)試人員一目了然。 關(guān)鍵詞 ： 高爐上料 ； PLC 控制； PLC 編程； 自動控制 Abstract: Iron and steel industry is one of China39。 On the electrical design to ensure that the system has a certain number of check points, to ensure that the ining signal to the controller to be able to make an accurate processing and external control。s heavy industry is a pillar industry of our country. Is an important link in iron making production of blast furnace, reliable and perfect feeding automatic control and data acquisition to the stable yield, reducing coking of blast furnace, improve the quality of production plays an important role. Iron and steel enterprises at home and abroad are now very concerned about the problem of the blast furnace production of how to improve the also are actively used automation system of blast furnace. Automation system of blast furnace mainly solve the problem of the following aspects: in the process to ensure that the automation system can correct carried out in accordance with the order material ingredients, and to send material to Ann regulations order of blast furnace。 On the software to ensure the accuracy of the system reliability. Modern blast furnace automation refers primarily to the instrument and control system, electric control system and process and management with puter. The blast furnace San Dian integration. This system main design content includes: use STEP7 programming software of S7200 PLC programming, programming software, is a powerful support for ladder diagram, the statement table, function block diagram programming language, and use similar to the advanced language programming mode, the main program and subroutine has carried on the modularization and interrupt program, increases the readability of programs, programming and missioning personnel be clear at a glance. In addition STEP7 support scale debugging, can use after the program downloaded to the PLC and scale think assignment method to simulate the field data input. PLC as the controller has the following characteristics, is especially suitable for industrial control, 1. Easy to use , simple programming. 2. The function