直流调速系统概述外文翻译Word文件下载.docx
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直流调速系统概述外文翻译Word文件下载.docx
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DCgovernorisartificiallyorautomaticallychangethedirectcurrentgeneratorrotationalspeedtomeettheFormechanicalrequirements.Fromthemechanicalpropertiespointofview,isthatbychangingtheparametersorelectricmotorsplusThevoltageelectricmotorsandothermethodstochangethemechanicalproperties,thuschangingelectricmotorsandmechanicalpropertiesMechanicalpropertiesoftheclaimedidentityworkforthestabilityofoperationofelectricmotorschanged.Therewillbealinktothegovernor,usuallythroughthemiddleenlargedlink,calibrationlinks,feedbacklinksandotherlinkstoachieveprotection.Therotationalspeedelectricmotorsnotgivenrotationalspeedautomaticcalibrationanderrorsystemasapartofthegovernorcontrolsystem.Thisgovernorsystemofrotationalspeedelectricmotorsandpowersupplyvoltagefluctuationstobeloadfluctuations,theimpactofexternaldisturbances.Electricmotorstotherotationalspeedautomaticcalibrationandgivenrotationalspeeddeviationsfromloadvoltageandpowerfluctuations,theimpactofexternaldisturbancestotherotationalspeedelectricmotorsalwaysconsistentwiththerotationalspeedofthegovernortobeknownasloopsystemcontrolsystem.Thisisduetoafeedbackloopcontrolsystemlink.Electricaltransmissioncontrolsystemsusuallybyelectricmotorsandcontroldevicesandinformationdevicesthreeparts.Itcancomplywiththerequirementsoforders,thetimelycontrolofelectricmotorsstarting,braking,directionoftheoperation,location,speedandacceleration,workmachineryandproductionprocessestomeettherequirements.Withelectrical,sensors,controldevices,theflowoftechnologyandchangecontroltheory,electricaltransmissioncontrolsystemshavebeengreatlydeveloped.Currently,thesingleaircraftusedelectricalcapacityfromafewhundredkilowattstotensofthousandsofkilowatts,andchangetheflowofequipmentfromtherotarykilnelectricalflowchangeJingzhaguanstationarypowerunitstochangeflowdevices,andpoweroffdevicesfromstaticfrequencyconversiondevices;
Controlmodulefromthesimulationofsensors,conditioners,willbeintegraltothedevelopmentofdevicestomicroprocessorschipsatthecorepay,DCgenericdigitalvolumecontrolmodule;
systemcontrolmodeswitchingfrommanualoperationofmulti-parametercontroltoservocontrol;
fromsimplemechanicstoelectricaltransmissionsystemexpansionforlocation,speed,accelerationcontroloftheimportantbranchesofthemovementcontrol.Inshort,modernelectricaltransmissioncontrolsystemhasbeendevelopedintoanewelectricaltransmissionautomationsystem.
DCgovernoradvantage
Directcurrentgeneratorisagood,brakingperformance,appropriateinabroadercontext,smoothmechanics,rollingmill,minehoist,excavator,marinerigs,metalcuttingmachinetools,paperplanes,suchastheneedforhigh-performancehigh-liftelectricityfeesControllableareasreceivedwidespreadapplication.Inrecentyears,exchangesgovernorsystemdevelopedrapidly,butdirectcurrentfeessystemintheoryandpracticearerelativelymature,andfromthefeedbackloopcontrolperspective,itistheexchangecontrolsystembasedfees,sodirectcurrentgovernorsystemintheproductionandlivingandplayavitalrole.DCgovernorsystem,inparticularthedouble-loopDCgovernorsystemisthemostwidelyusedindustrialproductionprocesselectricaltransmissiondevicesone.Widelyusedinsteelrollingmachines,metallurgy,printing,metalcuttingmachinetools,andmanyotherareasofautomaticcontrolsystem.Itisusuallyusedthree-phasefullcontrolofthebridgecommutationcircuitsforpowerelectricmotorstocontroltherotationalspeedofelectricmotors,thetraditionalcontrolsystemsusinganalogcomponents,suchastransistors,variouslinearcircuitoperation,althoughtosomeextenttomeetproductionrequirements,butbecauseofagingcomponentsandeasytouse,arevulnerableintheoutsideinterferenceeffects,andcomplexcircuits,overallpoorcontrolresultsbydeviceperformance,temperatureandotherfactors,therebycausingtheoperationofthesystemcharacteristicsalsochangeaccordingly,theoperatingsystemreliabilityandaccuracycannotbeguaranteed,eveninaccidents.
Double-loopsystemintegralDCgovernor
Rotationalspeed,thecurrenttwo-loopsystemstheorygovernorfigure2-1.Bytheplanshowsthatthesystemhastwofeedbackcircuit,a2loopcircuit(socalleddouble-loop).OneisthecurrentregulatorLtandcurrenttesting-thecurrentpartofafeedbacklink,andanotherbythespeedregulatorStrotationalspeeddetection-afeedbacklinkspeedlink.AspartoftheCentralbuildingscurrents,thecurrentsthatthreatenedtoCentral(boysDeputyCentral),saidspeedlinktocry(thatthemainpart).Inthecircuit,astringStandLtlevelconnectivityfromStto"
drive"
Lt,andthenfrom"
Lt"
tothe"
control"
triggercircuit.Chartspeedregulatorandcurrentregulatorareproportionalplusintegral(PI)regulator,theimportandexportofalimitedDeputycurrentsarelocated.Rotationalspeedlinkcalledcurrentrapidchangeinresponsetorotationalspeed,andcurrentsarerequiredtomaintaincurrentCentralunchanged.Thisperformancewillbedetrimentaltocurrentchangesinresponsetorotationalspeed,thebettertocalmcharactersoftenMomentum.Butaspartofadedicatedrotationalspeed,currentroleonlyapartofarotationalspeedofinternaldisturbances.Central,nottheleadingrole.Asapartoftherotationalspeedlinkenlargedmultiplelargeenough,thelaststillrelyingonthescoringSt.Eliminaterotationalspeeddeviations.Double-loopmechanicalgovernorsystemfeaturesAsforStPiregulator,thesystemwasnotverybad,repeatableerrorsmall,thegeneralsaid,mostlyTomeetproductionrequirements.Itsmechanicalpropertiessimilartoahorizontalline,asshowninfigure2-2a.Whenelectricmotorsseriousoverload,andwhenI>
I,thecurrentregulatorwouldexportfairingVoltagesignificantlyreduced,whichlimitsthecurrentcontinuedtogrow,ontheotherhandwillrotationalspeedrapidlyinaverysteepthedroopcharacteristicsfigure2-2b.
DCmechanicsofthedigitalsystem
Withmicroelectronictechnology,microprocessorsandcomputersoftwaredevelopmentforthecontrolofthegovernorthroughavarietyoffunctionsinalmostallmicroprocessors,theuseofsoftwaretoachieve.Fromthepasttocontrolthesimulationmodelling-controlleddigitalmixeddevelopment,thefinalrealizationoftheentiredigital.Indigitalsystems,withtheexceptionofthegovernorofconventionalfunctions,butalsoafailurewarning,diagnosisandshows,andotherfunctions,anddigitalsystemsusuallyhavestrongcommunicationcapabilities,throughmatchingappropriatecommunicationsinterfacetemplatescaneasilyachievethemainstation(asmentionedlevelPlcorcomputersystem)andfromstations(singlehanded,DCtransmissioncontroldevices),thenumberofdigitalcommunications,multi-aircraftformationautomatedclassificationsystem.Foreasydebugging,digitalsystemssoftware,thegeneraldesignofaregulatorparametersoptimizedautomation,optimizationthroughaprocesstoachieveanexcellentandtheautomaticidentificationsystemdynamicsparameters,andtheachievementofidentity,suchasdirectcurrentgeneratormagnetizationcurveautomatictesthelpstoshortenthedebuggingtimeandimprovecontrolperformance.Someforeigncompanieshavearangeofelectricaladjustmentsystemwithsimulationcorrespondstotheall-digital,DCmechanicsdeviceproductsfortheselectionanddevelopmentofnewgovernoralmostentirelydigitalsystem.Andsimulationsystemssimilar,all-digitalsystemdevelopedforthecompactstyleandmechanicsofmodulartwobroadcategories.However,all-digitalsimulationofagovernororgovernorsystemincomparableadvantagesofthesystem,moreadvancedtechnology,easytooperate.Governorsystemandthedigitalsystemsimulationgovernorcomparedtechnicalperformancefollowingadvantages:
1)high-precisionattitudetowardlong-termmaintenance.2)gooddynamicperformance,dynamicparametersfortheadjustment,giventherichsoftwaretoachievevariousadaptiveandcompositecontrol.3)governorawide4)Smallvoltagefluctuations5)parametersofthesoftware,nodriftimpact6)thenumberofcomponentsusedlessdifficultlapse7)ahighdegreeofvaluetoquantify,andrepeatrategoodcondition8)couplednoiseamplifierandasmallclass,smallelectromagneticinterference9)theoperationofflexibledebuggingconvenientandeasytodesignandmodifythedesign10)thehighdegreeofcommonstandardsand,inadditiontotheCPUmodule,onlyseveraladditionalmodulesAchievable,includingparameters,multipleloopcontroltechniques11)scopeofapplicationcanbeachievedeasilyachievedwithvariousgearshiftcontrolandcommunicationssystemsPlc12)conventionalJingzhaguanDCmechanicsavailablesoftwaresystemtoreplacealargenumberofhardware,thussimplifyingsystemarchitectureandreducingtheelectroniccomponentsXuhan,accesstoundesirablesubstancessuchasleadandsomefailures,andmaintenanceconvenience
DCgovernorsystemandthecurrentdevelopment
Nearly30yearsago,forthefollowingreasons,andpromotedtherapiddevelopmentofpowercontrolsystemsexposed,oneistocontrolthedevelopmentoftheory,abestcontrol,thesmartcontrolselfcontrol,intelligencecontrol.Correspondingcontrolsystemisalsoexposedthepracticegraduallytakingshape.Thesecondisthedevelopmentofelectronicdevices,controlsystemscompositionfeesbroughtsignificantchanges.Changesint
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