波形发生器中英文对照外文翻译文献.docx
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波形发生器中英文对照外文翻译文献.docx
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波形发生器中英文对照外文翻译文献
(文档含英文原文和中文翻译)
中英文资料外文翻译
THEDESIGNOFARBITRARYWAVEFORMGENERATORS
Theprofilegeneratoriscanproducethemassivestandardsignalsandtheuserdefinitionsignal,andguaranteesthehighaccuracy,highstable,therepeatabilityandtheeasyoperationalelectronicinstrumentation.Thefunctionprofilegeneratorhasthecontinualphasetransformation,andmeritsandsoonfrequencystability,notonlymaysimulateeachkindofcomplexsignal,butalsomaytothefrequency,thepeak-to-peakvalue,thephase-shift,theprofilecarryonthetendency,thepromptcontrol,andcancarryonthecommunicationwithotherinstruments,thecompositionautomatedtestsystem,thereforewidelyusesintheautomaticcontrolsystem,thevibrationdrive,thecommunicationandtheinstrumentmeasuringappliancedomain.
Asearlyasin20's,whentheelectronicinstallationjustappeared,heappeared.Alongwiththecorrespondenceandtheradartechnologydevelopment,the40'sappearedhasmainlyusedintestingeachkindofreceiverthestandardsignalgeneratingdevice,causedthesignalgeneratingdevicetobecomethequantitativeanalysisfromthequalitativeanalysismeasuringinstrumentthemeteringequipment.Simultaneouslyalsoappearedavailablehastestedthepulseelectriccircuitorservesasthepulsedebuggerthepulsesignalgeneratingdevice.Quiteiscomplexasaresultoftheearlysignalgeneratingdevicemechanism,thepowerquiteisbig,theelectriccircuitquiteissimple,(withdigitalinstrument,oscilloscopecompares),thereforedevelopsquiteslowly.Onlythenappearedthefirstholocrystallinetubesignalgeneratingdeviceuntil1964.Sincethe60's,thesignalgeneratingdevicehadtherapiddevelopment,appearedthefunctiongenerator,hassweptthefrequencysignalgeneratingdevice,thecompositesignalgenerator,theprogramcontrolsignalgeneratingdeviceandsoonthenewtype.Eachkindofsignalgeneratingdeviceperformanceindexalsohadthelargescaleenhancement,simultaneouslyinthesimplificationmechanism,theminiaturization,multi-purposeandsoonvariousaspectsalsohadtheremarkabledevelopment.Beforethe70's,thesignalgeneratingdevicemainlyhastwokinds:
Sinewaveandpulsewave,butthefunctiongeneratorissituatedbetweentwokinds,canprovidethesinewave,thecosinewave,thesquare-wave,thetriangularwave,thetopchordwaveandsoonseveralkindofcommonlyusedstandardwavepatterns,whenhasotherprofiles,needstousethecomplexelectriccircuitandthemechanicalandelectricalunionmethod.
Thistimeprofilegeneratorusesthesimulationelectronictechnology,moreoversimulatestheelectriccircuitwhichthecomponentconstitutestohavethesizeinabigway,thepriceexpensive,thepowerlossbigandsoontheshortcomings,andmusthavethemorecomplexwaveform,thentheelectriccircuitstructureisextremelycomplex.Atthesametime,themainperformanceistwoprominentquestions,oneisrealizestheoutputfrequencyadjustmentthroughthepotentiometeradjustment,thereforeadjustsverydifficultlythefrequencysomefixture;Twoisthepulsedutyfactorcannotadjust.Afterthe70's,themicroprocessorappearancemayusetheprocessor,A/D/andD/A,thehardwareandthesoftwarecausestheprofilegeneratorthefunctionexpansion,hasamorecomplexprofile.Thistimeprofilegeneratormanybysoftwareprimarily,theessenceisusesthemicroprocessortotheDACprocedurecontrol,mayobtaineachkindofsimpleprofile.Butattheendofthe90's,appearedseveralkindoftruehighperformances,thehighpricefunctiongenerators,HPCorporationhaspromotedthemodelistheHP770Ssignalimitationinstallmentsystems,ithadthesoftwarebytheHP8770ArandomprofiledigitizationandtheHP1776Aprofiletobecomposed.HP8770Ainfactalsoonlycanhave8profiles,moreoverthepriceisexpensive.Soonafter,AnalogicCorporationhaspromotedthemodelistheData-2020multi-profilesynthesizer,themodelwhichLecroyCorporationproducesis9100randomprofilegeneratorsandsoon.
Tothe21stcentury,alongwiththeintegratedcircuittechnologyhighspeeddevelopment,appearedmanykindsofoperatingfrequencytobepossibletheGHzDDSchip,simultaneouslyalsoimpelledthefunctionprofilegeneratordevelopment,in2003,Agilentproduct33220Acouldhave17kindofprofiles,theupperfrequencymayachieve20M,2005theyearproductN6030Acouldproducereachesashighasthe500MHzfrequency,thesamplingfrequencymayreach1.25GHz.Mayseebyaboveproduct,functionprofilegeneratordevelopmentveryquickinthelastfewyears,ontheinternationalprofilegeneratortechnologicaldevelopmentmainlymanifestsinfollowingseveralaspects:
(1)quitewasinthepastnarrowandsmallasaresultofthefrequencyverylowapplicationscope,theoutputwaveshapefrequencyenhancement,enabledtheprofilegeneratortoapplyinthemoreandmorebroaddomain.Theprofilegeneratorsoftwaredevelopmentiscausingtheprofiledatatheinputtobecomeevenmoreismoreconvenientandiseasy.Theprofilegeneratorusualpermissionwithaseriesofspots,thestraightlineandthefixedfunctionsectionstorestheprofiledatathememory.Simultaneouslymayuseonepowerfulmathematicsequationinputway,thecomplexprofilemaycompoundbecomethev=f(t)formbyseveralquitesimpleformulastheprofileequationmathematicalexpressionproduction.Thuspromotedthefunctionprofilegeneratortotherandomprofilegeneratordevelopment,eachkindofmachinelanguagerapiddevelopmentalsoplayedtotherandomprofilegeneratorsoftwaretechnologytheimpetusrole.Atpresentmayusethevisualizationprogramminglanguage(forexampleVisualBasic,VisualCandsoon)compilestherandomprofilegeneratorthesoftkneadingboard,likethisallowsfromthecomputerdisplaymonitortoinputtherandomprofile,realizestheprofileinput.
(2)andVXIresourcesunion.Atpresent,theprofilegeneratorandissuitablebytheindependenttablemodelinstrumentforthepersonalcomputerVXImodulewhichinsertedthecardaswellasrecentlydevelops.BecauseVXImainlinegraduallymatureandtometeringequipmenthighrequest,needstouseVXIsystemsurveyinverymanydomainstohavethecomplexprofile,VXIsystemresourceshaveprovidedtheobvioussuperiority,butbecausedevelopsVXImodulethecycletobelong,moreoverneedsthespecialVXIenginecasethenecessaryuse,causestheprofilegeneratorVXImoduleonlytoberestrictedintheaviation,themilitaryandthenationaldefenseandsoonthelarge-scaledomain.Inthecivilaspect,VXImodulewasinferiorbyfarthetablemodelinstrumentismoreconvenient.(3)alongwiththeinformationtechnologyvigorousdevelopment,thetablemodelinstrumentafterwalkedsectionofdownhill,prospers.Butthepresentnewtablemodelinstrumentshape,hastheverybigdifferencewithseveralyearagooneself.Thesenewgenerationoftablemodelinstrumenthasmanykindsofcharacteristics,maycarryoutmanykindsoffunctions.
Moreovertheexternaldimensionsandtheprice,allreducedcomparedtothepastsimilarproductonehalf.Asearlyasin1978,willannouncethehighestsamplingfrequencybyAmericanWavetekCorporationandJapaneseEastAsiaElectricwaveIndustrialcorporationis5MHz,mayform256(memorylength)theprofiledata,theverticalresolutionis8bit,mainlyusesinvibrating,domainandsoonmedicalservice,materialfirstgenerationofhighperformancesupplyoscillators,willpassthroughisnear30yearsdevelopment,wasfollowingtheelectronicprimarydevice,theelectriccircuit,andtheproductionequipmenthighspeed,GaojiChengHua,theprofilegeneratorperformancehadtherapidenhancement.Moreandmorebecomestheoperationtobesimpleoutputwaveshapeabilitytobemoreandstronger.Theprofileoperatingprocedurequality,isbytheprofilegeneratorcontrolsoftwarequalityassurance,theeditionfunctionincreasesmoremuch,theprofileformsoperationallybetter.Theprofilegeneratoristhesupplyoscillatoronekind,mainlyforwasmeasuredtheelectriccircuitprovidesoneselfwhoneedstoknowthesignal(eachkindofprofile),thenisinterestedwithothermeasuringappliancesurveytheparameter.Obviouslythesupplyoscillatorappliesandexperimentsintestprocessingateachkindofexperiment,itsapplicationisextremelywidespread.Itisnotthemeteringequipment,butisaccordingtouser'srequest,tookthedrivesource,thesimulationeachkindofspike,providesforismeasuredtheelectriccircuit,satisfiesthesurveyoreachkindofactualneed.
Atpresentourcountryoneselfafterstarttodeveloptheprofilegenerator,andhasyieldedtheencouragingresult.Butgenerallyspeaking,ourcountryprofilegeneratorhasnotformedthetrueindustry.Lookedonthepresentdomesticmatureproductthat,manyinsertsthecardforsomePCinstrument,theindependentinstrumentandVXIsystemmoduleareveryfew,andourcountryatpresentinprofilegeneratortypeandperformanceallwithoverseassimilarproductexistencebigdisparity,thereforestepsuptothiskindofproductdevelopmenttoappearimminently.
波形发生器的进展
波形发生器是能够产生大量的标准信号和用户定义信号,并保证高精度、高稳定性、可重复性和易操作性的电子仪器。
函数波形发生器具有连续的相位变换、和频率稳定性等优点,不仅可以模拟各种复杂信号,还可对频率、幅值、相移、波形进行动态、及时的控制,并能够与其它仪器进行通讯,组成自动测试系统,因此被广泛用于自动控制系统、震动激励、通讯和仪器仪表领域。
早在20年代,当电子设备刚出现时,他就出现了。
随着通信和雷达技术的发展,40年代出现了主要用于测试各种接收机的标准信号发生器,使信号发生器从定性分析的测试仪器成为定量分析的测量仪器。
同时还出现了可用来测试脉冲电路或用作脉冲调试器的脉冲信号发生器。
由于早期的信号发生器的机械结构比较复杂,功率比较大,电路比较简单,(与数字仪器,示波器相比),因此发展比较缓慢。
直到1964年才出现了第一台全晶体管的信号发生器。
自60年代以来,信号发生器有了迅速的发展,出现了函数发生器、扫频信号发生器、合成信号发生器、程控信号发生器等新种类。
各类信号发生器的性能指标也有了大幅度的提高,同时在简化机械结构、小型化、多功能等各方面也有了显著的发展。
在70年代前,信号发生器主要有两类:
正弦波和脉冲波,而函数发生器介于两类之间,能够提供正弦波、余弦波、方波、三角波、上弦波等几种常用标准波形,产生其它波形时,需要采用较复杂的电路和机电结合的方法。
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