【正文】 環(huán)節(jié)，是決定啤酒質量的最關鍵的一步，特別是對發(fā)酵過程中溫度、壓力的控制尤其重要，控制指標的好壞將直接影響啤酒的質量。由于啤酒生產的工藝復雜，目前我國大多數啤酒生產企業(yè)技術裝備落后，自動化程度低，產品質量不穩(wěn)定。object工業(yè)自動化控制論文目錄摘要 ........................................................................1ABSTRACT ....................................................................21 緒論 ......................................................................5 選題的目的和意義 .......................................................5 ...............................................5 PLC控制的主要研究工作 ...............................62 啤酒發(fā)酵工藝概述 ..........................................................7 ...........................................................7 發(fā)酵各階段溫度控制機理 .................................................7 啤酒發(fā)酵設備概述 .......................................................8 啤酒發(fā)酵溫控基本要求 ...................................................9 啤酒發(fā)酵工藝流程 ......................................................103 應用 PLC實現啤酒發(fā)酵溫度控制的可行性分析 .................................12 可編程序控制器 PLC的特點 ..............................................12 PLC的組成與基本原理 ..................................................13 PLC的組成結構 ....................................................13 PLC的工作原理 ....................................................13 PLC的主要功能和應用 ..............................................15 PLC在啤酒發(fā)酵中應用的可行性 ..........................................154 啤酒發(fā)酵溫度 PLC控制方案 .................................................17 ....................................................17 ..................................................17 系統功能 ..........................................................17 PLC控制系統方案 ..................................................185 啤酒發(fā)酵溫度 PLC控制硬件設計 .............................................20 ..........................................................20 CPU的選型 ........................................................20 模擬量擴展模塊 ....................................................22 控制系統硬件配置 .................................................23 啤酒發(fā)酵溫度 PLC控制系統的 I/O分配 ....................................24 I/O地址分配 ......................................................246 PLC實現啤酒發(fā)酵溫度控制的程序設計 ........................................27 編程軟件的介紹 .......................................................27 指令系統 ..........................................................27 PLC 程序設計流程及原則 .............................................28 STEP7MICRO/WIN 32 編程軟件基本信息 .................................29 控制程序流程圖 ........................................................30 發(fā)酵溫度控制系統流程圖 ...........................................30 控溫程序流程圖設計 ...............................................31 PID控制 ..............................................................32 S7200的 PID指令 .................................................32 數值轉換及標準化 ..................................................33 選擇 PID回路類型 ..................................................33 系統程序設計 ..........................................................33 符號表 ............................................................33 主程序 ............................................................35 主酵自然升溫段程序 ................................................36 溫度控制程序 ......................................................36 電磁閥控制 ........................................................40結束語 .....................................................................41致謝 .......................................................................42參考文獻 ...................................................................431 緒論 選題的目的和意義啤酒是世界上產量及消費最大的一種酒，特別是北美及歐洲國家的總產量及人均消費量均居世界前列，我國隨著改革開放現代化建設，人民生活水平不斷斷提高，啤酒己成為人們的時尚飲品，市場的寵兒，生產直線上升，進入九十年代后產量逐年增加，目前已成為僅次于美國的世界第二大啤酒產銷國，令世界啤酒界人士刮目相看。 發(fā)酵溫度；對象ABSTRACTThe human use the grain manufacture wines more than 8000 years. Beer spread from the foreign country to China in 19 century. Beer production, as one of the most important traditional industry, has been developed quickly in our country with the development of civil economy and the improvement of standard of living. However, because of the plexity of the beer production, domestic breweries have many disadvantages, such as outdated measurement and control equipments, low level of automation, instable product quality, etc. How to improve the integrated automation level in beer production bees an urgent research project. Beer fermentation is one of the key steps of beer production. Thus, on the basis of some projects in breweries, this thesis investigated beer fermentation automation and Fuzzy Intelligent PID algorithm applied in this process. It is an attempt to apply high technology to traditional industry and has importantly practical meaning. In this paper, beer fermentation process for the project background, the use of PLC in the beer fermentation process temperature control, which is more firmly grasp PLC and used to produce practical and understanding of the beer production process have a very good role. What this research solute is： As the object of beer fermentation, degeneration, and the uncertainty of the delay, a decision must be in control of fermentation tank special control algorithms. As each there are individual differences, but in different process conditions, different fermentation bacteria, the object characteristics vary. Therefore it is difficult to find or create a precise mathematical model to simulate and forecast control. To save energy, reduce production costs and to meet the requirements of control, temperature control of fermentation tank selected the detection of the fermentation tank, in the next paragraph 3 of the temperature, through the upper, middle and lower imports of liquid ammonia in paragraph three Electromagic valve to achieve fermentation tank temperature control method. To solute the whole process temperature control by plc. The system performance higher than price, reliable, advanced technolog