武科大自動(dòng)化專(zhuān)業(yè)英語(yǔ)(2012a)

1、注：1、教師命題時(shí)題目之間不留空白；2、考生不得在試題紙上答題，教師只批閱答題冊(cè)正面部分。（第1頁(yè)）試題紙課程名稱(chēng)：SpecifiedEnglish適用專(zhuān)業(yè)年級(jí)：考生學(xué)號(hào)：考生姓名：………………………………………………………………………………………………………1.WdsTerms(1)PleasegivethecompleteexpressionoftheabbreviatedwdsgivetheChinesemeaning.(2’ⅹ1

2、0)1)TF2)DA3)IC4)IO5)ALU6)CPU7)PID8)MIMO9)GNP10)VLSI(2)PleasetranslatetheEnglishwdstermsintoChinese.(1’ⅹ20)1)discretesystem2)settingtime3)statevariable4)inversetransfm5)Laplacedomain6)dynamicresponse7)automaticprocesscont

3、rol8)complexdomain9)initialvalue10)classicalcontrol11)gatecircuit12)transientresponse13)percentovershoot14)perfmancecriteria15)differentialequation16)developmentsystem17)finalcontrolsystem18)optimalcontrol19)openloop20)l

4、inearvectspace注：1、教師命題時(shí)題目之間不留空白；2、考生不得在試題紙上答題，教師只批閱答題冊(cè)正面部分。（第3頁(yè)）(5)InNNgates(aswellasangates)whenitservesourpurposetodosowecanarbitrarilyoneinputterminalviewitasanenabledisableinput.ThusconsideraNangate.Iftheoneedinputis

5、atlogic1theoutputofthegateisindependentofallotherinputs.thisoneedinputtakescontrolofthegatethegateisdisabledwithrespecttoanyotherinput.(6)Theimptanceofthesecomponentsisthattheyperfmthethreebasicoperationsthatmustbepresen

6、tineverycontrolsystem.theseoperationsare:1)measurement(M):measuringthevariabletobecontrolledisusuallydonebythecombinationofsenstransmitter.2)Decision(D):basedonthemeasurementthecontrollermustthendecidewhattodotomaintaint

7、hevariableatitsdesiredvalue.3)Action(A):asaresultofthecontroller’sdecisionthesystemmustthentakeanaction.Thisisusuallyaccomplishedbythefinalcontrolelement.3.PleasetranslatethefollowingsentencesintoEnglish.(10’)PID控制是將比例、積

8、分、微分三種控制規(guī)律結(jié)合一起。比例環(huán)節(jié)的作用是，當(dāng)偏差一旦產(chǎn)生時(shí)，比例調(diào)節(jié)立即發(fā)揮作用，以減少偏差；積分的作用是消除余差；微分的作用是反映偏差的變化，并能在偏差信號(hào)變大前，在系統(tǒng)中引入一個(gè)有效的修正，從而加快系統(tǒng)的動(dòng)作速度，減少調(diào)節(jié)時(shí)間。4.PleasegiveAbstractKeywdsaboutthefollowingpaper.(15’5’)Atthistimeitisnecessarytodefinesometermsusedi

9、nthefieldofautomaticprocesscontrol.Thefirsttermiscontrolledvariable.Thisisthevariablethatmustbemaintainedcontrolledatsomedesiredvalue.Intheprecedingexampletheprocessoutlettemperature()Ttisthecontrolledvariable.Thesecondt

10、ermissetpointthedesiredvalueofcontrolledvariable.Themanipulatedvariableisthevariableusedtomaintainthecontrolledvariableatitssetpint.Intheexampletheflowofsteamisthemanipulatedvariable.Finallyanyvariablethatcancausethecont