【正文】 on Column[P] Chemical Engineering Science (S00092509),1973,(28)1707～1717.[17]—P串級控制研究[J].電子技術(shù)應(yīng)用,2010,36(1).[18]黃克謹?shù)?，精餾塔通用動態(tài)仿真軟件及其在控制系統(tǒng)設(shè)計中的應(yīng)用[J]，系統(tǒng)仿真學報,1994,6(4):49～56.[19],[20]張葛祥,:清華大學出版社,[21]吳旭光,楊惠珍,王新民,計算機仿真技術(shù)[M]北京：化學工業(yè)出版社，2008致 謝 經(jīng)過幾個月的查資料、整理材料、寫作論文，今天終于可以順利的完成論文的最后的謝辭了，時光匆匆飛逝，四年多的努力與付出，隨著論文的完成，終于讓我在大學的生活得以劃上完美的句號。 論文得以完成，要感謝的人實在太多了，首先要感謝的是我的指導(dǎo)老師解麗華老師，因為論文是在解麗華老師的悉心指導(dǎo)下完成的。解老師指引我論文寫作的方向和架構(gòu)，并對本論文初稿進行逐字批閱，指正出其中誤謬之處，使我有了思考的方向，她的循循善誘的教導(dǎo)和不拘一格的思路給予我無盡的啟迪，她的嚴謹細致、一絲不茍的作風，將一直是我工作、學習中的榜樣。解老師要指導(dǎo)很多同學的論文，加上本來就有的教學任務(wù)，工作量之大可想而知，但在一次次的問題解答中，精確到每一個字的批改給了我深刻的印象，使我在論文之外明白了做學問所應(yīng)有的態(tài)度。 論文的順利完成，也離不開其它各位老師、同學和朋友的關(guān)心和幫助。在整個的論文寫作中，各位老師、同學和朋友積極的幫助我查資料和提供有利于論文寫作的建議和意見，在他們的幫助下，論文得以不斷的完善，最終幫助我完整的寫完了整個論文。另外，要感謝在大學期間所有傳授我知識的老師，是你們的悉心教導(dǎo)使我有了良好的專業(yè)課知識，這也是論文得以完成的基礎(chǔ)。 在論文的寫作過程中也學到了做任何事情所要有的態(tài)度和心態(tài)，首先我明白了做學問要一絲不茍，對于出現(xiàn)的任何問題和偏差都不要輕視，要通過正確的途徑去解決，在做事情的過程中要有耐心和毅力，不要一遇到困難就打退堂鼓，只要堅持下去就可以找到思路去解決問題的。在工作中要學會與人合作的態(tài)度，認真聽取別人的意見，這樣做起事情來就可以事半功倍?？傊舜握撐牡膶懽鬟^程，我收獲了很多。此次論文的完成既為大學生涯劃上了一個完美的句號，也為將來的人生之路做好了一個很好的鋪墊。 再次感謝在大學傳授給我知識以及給我?guī)椭凸膭畹睦蠋?，同學和朋友，謝謝你們。 設(shè)計人：孟曉華 2012年6月1日附 錄The technology about Programmable Logic Controller Programmable Controller, because the early time mainly applies in the switch quantity control, therefore also is called PLC (Programmable Logic Controller), is the programmable logical controller. The modern programmable controller is taking the microprocessor as a foundation, integrates highly the new industry control device, and is a product which puter technology and the industry control technology unify. PLC since has been published, passes through 20 years development oneself after the industry control class product something that bees most receives wele. It the reason that high speed develops, besides industrial automation objective demand, but also some many unique merits. In it good solution industry control domain the universal care reliable, safe, nimble, has been convenient, question and so on economy.1. Basic principle of the programmable logic controller PLC is because of the electronic puter, and is suitable for the electric controller of the work on the spot of industry. It es from continuing the electric control device, but as continuing the electric device, realize control through the physics course of the circuit, is it operate on produce, PLC of memory is it is it happen message vary and realize control to enter to go on leaning against mainly. The PLC work process is the cyclical circulation scanning work process. The user program or other input device inputs deposits through the programming in the PLC user memory. When PLC starts the movement, the CPU basis system monitor routine stipulation order, through the scanning, pletes various entrance points condition gathering or datain gathering, the user program execution, various entrance points condition renewal, the programming enters the response and the demonstration renews, and function and so on CPU selfchecking. (1) The programmable controller realizes the main point of control. Is it happen information vary, reliable physics realize say to be PLC realize two basic main points of control to enter. Is it happen information vary by is it store on procedure, PLC of memory realizing to operate to enter. PLC procedure has systematic procedures of the manufacturer (can39。t be altered), there are procedures of application (users) which users developed by oneself. The systematic procedure offers operation platform, meanwhile, operate for PLC procedure reliably and the signal and information change essential public processing. User39。s procedure is designed according to the control request by users. What kind of control request, what kind of user39。s procedures should be had? Reliable physics is realized by inputting and exporting the circuit mainly. I/O circuit of PLC is all specially designed. Inputting the circuit will strain waves to the input signal, interfere in order to remove high frequency. And isolate with the inside puter circuit on the electricity, establish the connection by the photosensitive resister ponent. Output circuit whom electricity isolates too, output by photosensitive resister ponent relay set up the connection. Output circuit carry on power amplification, with enough to drive the general industrial control ponent, for instance electromagnetic valve, contactor, etc. I/O circuit is a lot, every introduction is clicked or all have one I or O circuit to export one, PLC have how much I/O is it order to spend, have how much I/O spend the circuit too generally. But because they are all made up of highly integrated circuit, so, the volume accounted for is not big. Input circuit monitor import to state constantly, store on the checking device temporarily of inputting temporarily it. Every introduction point has one corresponding memory person who deposit temporarily of information. Outputting the circuit should convey the information of outputting the latch to exporting to click. It is oneone too with exporting clicking to export the latch. It is registers of PLC processor I/O mouth that the introduction storing temporarily device and exporting the latch here is real. They exchange information with the memory of the puter through the puter bus, and is operated the systematic procedure to realize mainly. Read inputting the information of the storing device temporarily in the memory of PLC, claim introduction is broken. PLC memory has shining upon area that preserves introduction information that is specially opened up. The every corresponding location (bit) of district calls that and imports to the relay, or call the soft contact. These positions bee 1, show that open in the contact, 0 broken for contact is put into. Because its state was input and broken getting, so, what it reflected is to input the state. The output shining upon area export