PLC及變頻器技術(shù)中英文對照外文翻譯文獻(xiàn)

PAGE30中英文資料對照外文翻譯PLCandinvertertechnologytrends1.Thedevelopmenttrendoftheprogrammablecontroller“PLCisonekindspeciallyforthedigitaloperationoperationelectronicinstallationwhichappliesundertheindustryenvironmentdesigns.Itusesmaythecodingmemory,usesforinitsinternalmemoryoperationandsoonactuatinglogicoperation,sequenceoperation,time,countingandarithmeticoperationinstructions,andcanthroughdigitalorthesimulation-likeinputandtheoutput,controlseachtypethemachineryortheproductionprocess.PLCandtherelatedauxiliaryequipmentshouldaccordingtoformawholeeasywiththeindustrialcontrolsystem,easytoexpanditsfunctiontheprincipletodesign.”Inthe21stcentury,PLCwillhaveabiggerdevelopment.Technologicallyspeaking,computertechnology'snewachievementmorewillapplyintheprogrammablecontroller'sdesignandthemanufacture,willhavetheoperatingspeedtobequicker,thestoragecapacitytobebigger,anintelligentstrongervarietytoappear;Lookedfromtheproductscalethatfurtherdevelopstosubminiatureandtheultra-largedirection;Lookedfromtheproductovercoatabilitythattheproductvarietywillbericher,thespecificationtobemorecomplete,theperfectman-machinecontactsurface,thecompletecommunicationfacilitywilladapteachindustrialcontrolsituationdemandwell;Lookedfromthemarketthatvariouscountrieswillproducethemulti-varietyproductthesituationtobreakrespectivelyalongwiththeinternationalcompetitionaggravating,willpresenttheminorityseveralbrandmonopolyinternationalmarkettheaspect,willpresenttheinternationalgeneralprogramminglanguage;Lookingfromthenetworkstateofplay,theprogrammablecontrollerandotherindustrialcontrolcomputernetworkconstitutionlarge-scalecontrolsystemistheprogrammablecontrollertechnologydevelopmentdirection.PresentcomputercollectionanddistributioncontrolsystemDCS(DistributedControlSystem)hadthemassiveprogrammablecontrollerapplication.Isfollowingcomputernetwork'sdevelopment,theprogrammablecontrollertakestheautomationdirectednetandtheinternationaluniversalnetworkimportantcomponent,outsideindustryandindustrynumerousdomaindisplaymoreandmoremajorfunction.2.InvertertechnologydevelopmenttrendsInverterintothepracticalphaseofmorethan1/4centuryduringthisperiod,thefrequencyconvertertechnologyasthebasisofpowerelectronicstechnologyandmicroelectronicstechnologymanagerofaleapinthedevelopment,asthenewpowerelectronicdevicesandhigh-performancemicroprocessorTheapplicationofcontroltechnologyandthedevelopmentofincreasinglyhighcostperformanceoftheinverter,moreandmoresmallsize,butmanufacturersarestillinconstantfrequencyconvertertoachievethefurtherminiaturizationanddoingnewefforts.Fromatechnicalpointofview,withthefrequencyconvertertofurtherexpandthemarketofthefuture,withtheconverterandinvertertechnologywillbeonthedevelopmentoftechnologiesinthefollowingareasfurtherdevelopment:

(1)largecapacityandsmallsize;

(2)high-performanceandmulti-function;

(3)enhancetheease-of-use;

(4)increaseinlifeexpectancyandreliability;

(5)ofpollution-free.

Largecapacityandsmallsizeofthepowersemiconductordeviceswillbewiththedevelopmentofcontinuousdevelopment.Inrecentyears,drivenbyavoltagepowersemiconductordevicesIGBT(IsolatedGateBipolarTransistor,isolationgatebipolartransistors)hasdevelopedveryrapidlyandquicklyintothetraditionaluseofBJT(bipolarpowertransistor)andpowerMOSFET(FET)Thevariousfields.Inaddition,theIGBTswitchingdevicefortheIPM(IntelligentPowerModule,IPM)andMonolithicPowerICchipwillpowerswitchingdevicesanddrivingcircuit,suchastheprotectionofintegratedcircuitsinthesamepackage,withhighperformanceandreliabilityThemerits,withtheirhighcurrentandhighpressureofthedevelopmentofsmallandmedium-sizedconverterwillcertainlybemorewidelyused.

Withmicro-electronicstechnologyandsemiconductortechnologydevelopment,forInverterCPUandsemiconductordevicesandavarietyofsensorsofgettinghigherandhigher.Withthefrequencyconvertertechnologyandthedevelopmentofthegrowingmaturityoftheexchangegovernor,moderncontroltheoryareconstantlynewapplications.Thesehavefurtherimprovedtheperformanceofinverterprovidedtheconditions.Inaddition,withthefrequencyconvertertofurtherpromotetheuseandsupportarealsoconstantlymadenewdemands,thefrequencyconvertermanufacturerstocontinuouslyimprovetheperformanceandfrequencyconverterfunctionsinInverterneweffortstomeetuserAndtheneedforthefiercecompetitioninthemarketinaninvincibleposition.

Withthefrequencyconvertermarketcontinuestoexpand,howtofurtherenhancetheease-of-useinverter,sothatthetechnicalstaffandevenordinarynon-technicalstaffcanquicklymastertheuseoffrequencyconvertertechnologyhasbecomemanufacturersmustconsidertheissue.Becauseonlyeasy-to-useproductscancontinuetoacquirenewcustomersandfurtherexpandthemarket,sothefutureofthenewconverterwillbemoreeasytooperate.

Withthedevelopmentofsemiconductortechnologyandthedevelopmentofpowerelectronicstechnology,thefrequencyconverterusedinthevariouscomponentsofthelifeandreliabilityareconstantlyimproving,theywillmaketheirownlifeandthefrequencyconvertertofurtherincreasereliability.

Inrecentyears,peoplehaveattachedgreatimportancetoenvironmentalissues,andthusa"greenproducts"name.Therefore,theinverter,mustalsoconsideritsimpactonthesurroundingenvironment.

Promotetheuseofthefrequencyconverterintheearlystagesofthenoiseproblemwasonceabigproblem.Withthelow-noiseconverterIGBTtheemergenceofthisissuehasbasicallybeenresolved.However,withthenoiseproblemtosolve,people'slooksandaconvertertothesurroundingenvironmentandtheimpactofothercontinuouslyexplorenewsolutions.Forexample,theuseofadiode-voltageconverterandPWMinvertercircuitconverter,thefrequencyconverteritselfthehighharmonicswillbringsupplyvoltageandcurrentdistortion,andatthesamepowertoaffecttheotherequipment.However,throughtheuseofthefrequencyconverterRectifiercircuitPWM,wecanbasicallysolvetheproblem.AlthoughbecauseofpriceandcontroltechnologyandotheraspectsofthereasonsforthecurrentPWMconverterhasnotbeenpromotingtheinverter,but,withthefrequencyconvertertechnologydevelopmentandthepeopleoftheimportanceofenvironmentalissues.

PLC及變頻器技術(shù)的發(fā)展趨勢1．可編程控制器的發(fā)展趨勢可編程控制器是一種數(shù)字運(yùn)算操作的電子系統(tǒng)，專為在工業(yè)環(huán)境下應(yīng)用而設(shè)計(jì)。它采用可編程序的存儲器，用來在其內(nèi)部存儲執(zhí)行邏輯運(yùn)算，順序控制，定時(shí)，計(jì)數(shù)和算術(shù)運(yùn)算等操作指令，并通過數(shù)字式，模擬式的輸入和輸出，控制各種類型的機(jī)械或生產(chǎn)過程?？删幊炭刂破骷捌溆嘘P(guān)的設(shè)備，都應(yīng)按易于與工業(yè)控制系統(tǒng)聯(lián)成一個(gè)整體，易于擴(kuò)充功能的原則而設(shè)計(jì)。21世紀(jì)，PLC會有更大的發(fā)展。從技術(shù)上看，計(jì)算機(jī)技術(shù)的新成果會更多地應(yīng)用于可編程控制器的設(shè)計(jì)和制造上，會有運(yùn)算速度更快、存儲容量更大、智能更強(qiáng)的品種出現(xiàn)；從產(chǎn)品規(guī)模上看，會進(jìn)一步向超小型及超大型方向發(fā)展；從產(chǎn)品的配套性上看，產(chǎn)品的品種會更豐富、規(guī)格更齊全，完美的人機(jī)界面、完備的通信設(shè)備會更好地適應(yīng)各種工業(yè)控制場合的需求；從市場上看，各國各自生產(chǎn)多品種產(chǎn)品的情況會隨著國際競爭的加劇而打破，會出現(xiàn)少數(shù)幾個(gè)品牌壟斷國際市場的局面，會出現(xiàn)國際通用的編程語言；從網(wǎng)絡(luò)的發(fā)展情況來看，可編程控制器和其它工業(yè)控制計(jì)算機(jī)組網(wǎng)構(gòu)成大型的控制系統(tǒng)是可編程控制器技術(shù)的發(fā)展方向。目前的計(jì)算機(jī)集散控制系統(tǒng)DCS（DistributedControlSystem）中已有大量的可編程控制器應(yīng)用。伴隨著計(jì)算機(jī)網(wǎng)絡(luò)的發(fā)展，可編程控制器作為自動化控制網(wǎng)絡(luò)和國際通用網(wǎng)絡(luò)的重要組成部分，將在工業(yè)及工業(yè)以外的眾多領(lǐng)域發(fā)揮越來越大的作用。2.變頻器技術(shù)的發(fā)展動向變頻器進(jìn)入實(shí)用期已超過了1/4個(gè)世紀(jì)，在此期間，作為變頻器技術(shù)基礎(chǔ)的電力電子技術(shù)和微電子技術(shù)都經(jīng)理了飛躍性的發(fā)展，隨著新型電力電子器件和高性能微處理器的應(yīng)用以及控制技術(shù)的發(fā)展，變頻器的性能價(jià)格比越來越高，體積越來越小，而廠家則仍然在不斷地為實(shí)現(xiàn)變頻器的進(jìn)一步小型化而做著新的努力。從技術(shù)方面來看，隨著變頻器市場的進(jìn)一步擴(kuò)大，今后變頻器技術(shù)將會隨著與變頻器有關(guān)的技術(shù)的發(fā)展在下面幾個(gè)方面進(jìn)一步得到發(fā)展：（1）大容量和小體積化；（2）高性能和多功能化；（3）易操作性的提高；（4）壽命和可靠性增加；（5）無公害化。大容量化和小體積化將會隨著電力半導(dǎo)體器件的發(fā)展而不斷的到發(fā)展。近年來，采用電壓驅(qū)動的電力半導(dǎo)體器件IGBT（IsolatedGateBipolarTransistor,隔離門極雙極晶體管）發(fā)展很快，并在迅速進(jìn)入傳統(tǒng)上使用BJT（雙極功率晶體管）和功率MOSFET（場效應(yīng)管）的各種領(lǐng)域。此外，以IGBT為開關(guān)器件的IPM（IntelligentPowerMod