直流调速系统概述外文翻译.docx

直流调速系统概述外文翻译.docx

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直流调速系统概述外文翻译

DCgovernorsystemoutlined

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