【正文】 on Column[P] Chemical Engineering Science (S00092509),1973,(28)1707～1717.[17]—P串級(jí)控制研究[J].電子技術(shù)應(yīng)用,2010,36(1).[18]黃克謹(jǐn)?shù)?，精餾塔通用動(dòng)態(tài)仿真軟件及其在控制系統(tǒng)設(shè)計(jì)中的應(yīng)用[J]，系統(tǒng)仿真學(xué)報(bào),1994,6(4):49～56.[19],[20]張葛祥,:清華大學(xué)出版社,[21]吳旭光,楊惠珍,王新民,計(jì)算機(jī)仿真技術(shù)[M]北京：化學(xué)工業(yè)出版社，2008致 謝 經(jīng)過(guò)幾個(gè)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(shí)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(xué)的生活得以劃上完美的句號(hào)。 論文得以完成，要感謝的人實(shí)在太多了，首先要感謝的是我的指導(dǎo)老師解麗華老師，因?yàn)檎撐氖窃诮恹惾A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(duì)本論文初稿進(jìn)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(wú)盡的啟迪，她的嚴(yán)謹(jǐn)細(xì)致、一絲不茍的作風(fēng)，將一直是我工作、學(xué)習(xí)中的榜樣。解老師要指導(dǎo)很多同學(xué)的論文，加上本來(lái)就有的教學(xué)任務(wù)，工作量之大可想而知，但在一次次的問(wèn)題解答中，精確到每一個(gè)字的批改給了我深刻的印象，使我在論文之外明白了做學(xué)問(wèn)所應(yīng)有的態(tài)度。 論文的順利完成，也離不開(kāi)其它各位老師、同學(xué)和朋友的關(guān)心和幫助。在整個(gè)的論文寫作中，各位老師、同學(xué)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(jiàn)，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(gè)論文。另外，要感謝在大學(xué)期間所有傳授我知識(shí)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(shí)，這也是論文得以完成的基礎(chǔ)。 在論文的寫作過(guò)程中也學(xué)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(xué)問(wèn)要一絲不茍，對(duì)于出現(xiàn)的任何問(wèn)題和偏差都不要輕視，要通過(guò)正確的途徑去解決，在做事情的過(guò)程中要有耐心和毅力，不要一遇到困難就打退堂鼓，只要堅(jiān)持下去就可以找到思路去解決問(wèn)題的。在工作中要學(xué)會(huì)與人合作的態(tài)度，認(rèn)真聽(tīng)取別人的意見(jiàn)，這樣做起事情來(lái)就可以事半功倍?？傊?，此次論文的寫作過(guò)程，我收獲了很多。此次論文的完成既為大學(xué)生涯劃上了一個(gè)完美的句號(hào)，也為將來(lái)的人生之路做好了一個(gè)很好的鋪墊。 再次感謝在大學(xué)傳授給我知識(shí)以及給我?guī)椭凸膭?lì)的老師，同學(xué)和朋友，謝謝你們。 設(shè)計(jì)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