plc的應(yīng)用外文文獻翻譯、中英文翻譯、外文翻譯

1、<p>　　Application of PLC</p><p>　　PLC is one kind specially for the digital operation operation electronic installation which applies under the industry environment designs. It uses may the coding memor

2、y, uses for in its internal memory operation and so on actuating logic operation, sequence operation, time, counting and arithmetic operation instructions, and can through digital or the simulation-like input and the out

3、put, controls each type the machinery or the production process. PLC and the related auxiliary equipment should </p><p>　　In the 1970s the last stage, the programmable controller entered the practical applic

4、ation development phase, the computer technology has introduced in comprehensively the programmable controller, causes its function to have the leap. The higher operating speed, the subminiature volume, the more reliable

5、 industry antijamming design, the simulation quantity operation, the PID function and the extremely high performance-to-price ratio has established it in the modern industry status. In the early-</p><p>　　Th

6、e 20th century last stage, the programmable controller's development characteristic was even more adapts in the modern industry need. From the control scale, this time has developed the large-scale machinery and subm

7、iniature machine; From the control, was born various special function unit, used in the pressure, the temperature, the rotational speed, the displacement and so on all kinds of control situation; From product necessary a

8、bility, has produced each kind of man-machine contact surface </p><p>　　Our country programmable controller's introduction, applies, the development, the production to follow the reform and open policy t

9、o start. At first has used the programmable controller massively in the introduction equipment. Then expanded the PLC application unceasingly in each kind of enterprise's production equipment and the product. At pres

10、ent, our country have been possible to produce the middle and small scale programmable controller. East Shanghai the room electricity Limited company pro</p><p>　　Uses the manual operation in view of the YNL

11、 draw die machine electric control system, the existence operation is complex, the operation requests high, needs specially shortcomings and so on operators, has designed PLC the control system. Has given the electrical

12、machinery main return route, the PLC periphery wiring diagram; Has established the systems operation trapezoidal chart and the instruction list; And to this system key element shaping. After the improvement control syste

13、m has realized t</p><p><b>　　PLC的應(yīng)用</b></p><p>　　PLC是一種專門為在工業(yè)環(huán)境下應(yīng)用而設(shè)計的數(shù)字運算操作的電子裝置。它采用可以編制程序的存儲器，用來在其內(nèi)部存儲執(zhí)行邏輯運算、順序運算、計時、計數(shù)和算術(shù)運算等操作的指令，并能通過數(shù)字式或模擬式的輸入和輸出，控制各種類型的機械或生產(chǎn)過程。PLC及其有關(guān)的外圍設(shè)備都應(yīng)該按

14、易于與工業(yè)控制系統(tǒng)形成一個整體，易于擴展其功能的原則而設(shè)計?！?lt;/p><p>　　20世紀70年代中末期，可編程控制器進入實用化發(fā)展階段，計算機技術(shù)已全面引入可編程控制器中，使其功能發(fā)生了飛躍。更高的運算速度、超小型體積、更可靠的工業(yè)抗干擾設(shè)計、模擬量運算、PID功能及極高的性價比奠定了它在現(xiàn)代工業(yè)中的地位。20世紀80年代初，可編程控制器在先進工業(yè)國家中已獲得廣泛應(yīng)用。這個時期可編程控制器發(fā)展的特點是大規(guī)模、

15、高速度、高性能、產(chǎn)品系列化。這個階段的另一個特點是世界上生產(chǎn)可編程控制器的國家日益增多，產(chǎn)量日益上升。這標志著可編程控制器已步入成熟階段。</p><p>　　20世紀末期，可編程控制器的發(fā)展特點是更加適應(yīng)于現(xiàn)代工業(yè)的需要。從控制規(guī)模上來說，這個時期發(fā)展了大型機和超小型機；從控制能力上來說，誕生了各種各樣的特殊功能單元，用于壓力、溫度、轉(zhuǎn)速、位移等各式各樣的控制場合；從產(chǎn)品的配套能力來說，生產(chǎn)了各種人機界面單元、

16、通信單元，使應(yīng)用可編程控制器的工業(yè)控制設(shè)備的配套更加容易。目前，可編程控制器在機械制造、石油化工、冶金鋼鐵、汽車、輕工業(yè)等領(lǐng)域的應(yīng)用都得到了長足的發(fā)展。</p><p>　　我國可編程控制器的引進、應(yīng)用、研制、生產(chǎn)是伴隨著改革開放開始的。最初是在引進設(shè)備中大量使用了可編程控制器。接下來在各種企業(yè)的生產(chǎn)設(shè)備及產(chǎn)品中不斷擴大了PLC的應(yīng)用。目前，我國自己已可以生產(chǎn)中小型可編程控制器。上海東屋電氣有限公司生產(chǎn)的CF系列

17、、杭州機床電器廠生產(chǎn)的DKK及D系列、大連組合機床研究所生產(chǎn)的S系列、蘇州電子計算機廠生產(chǎn)的YZ系列等多種產(chǎn)品已具備了一定的規(guī)模并在工業(yè)產(chǎn)品中獲得了應(yīng)用。此外，無錫華光公司、上海鄉(xiāng)島公司等中外合資企業(yè)也是我國比較著名的PLC生產(chǎn)廠家。可以預(yù)期，隨著我國現(xiàn)代化進程的深入，PLC在我國將有更廣闊的應(yīng)用天地。</p><p>　　針對YNL拉模機電氣控制系統(tǒng)采用手動操作，存在操作復(fù)雜，操作要求高，需要專門操作人員等缺點