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1、闭环调速常识（Commonsenseofclosedloopspeedregulation）CommonsenseofclosedloopspeedregulationSaturday,05,December2009,19:471,whyinthesingleloopDCspeedcontrolsystemoftheforwardchannelmustjointheamplifyinglink?Answer:closedloopsystemsteady-statemuchstifferthantheopenloopspeedcontrolsystem
2、.Thus,thespeedrangecanbeincreasedundertherequirementofacertainstaticerrorrate,andthecostistoaddavoltageamplifierandadetectionandfeedbackdevice.2.Whyishighprecisionsingleclosed-loopDCspeedregulatingsystemmusthavehighprecisiongivenpowersupplyasguarantee?Answer:theaccuracyofthesys
3、temdependsonthegivenprecisionandfeedback.Speedcontrolsystemwithhighprecisionmustbegivenmorestablevoltagehighprecision.3.ThesingleclosedloopDCspeedcontrolsystem,whichusesproportionalregulatorastheamplifyinglink,iscalleddeviationcontrolSystem.Answer:becauseofdeviationadjustmentsy
4、stem,ifthereisnodeviationofsystemisnotoperatingproperly.4.Whatistheobjectofmovementcontrol?Answer:theobjectofcontrolisthemotorDrivetype:AC,DC5.Whatisacompositecontrolsystem?Acontrolsystembasedondisturbancecompensationopen-loopcontrolandclosedloopcontrolsystembasedondeviationreg
5、ulation6.WhatisasingleclosedloopDCspeedregulationsystem?Howdoesthesystemdetectthemotorspeed?Answer:thespeedclosed-loopDCspeedcontrolsystem,thevoltagemodefeedbackspeed.Tospeedthroughthedetectionspeedgeneratorandmotorshaft.7,speedcontrolsystemofstaticanddynamicindexreferstowhat?A
6、nswer:staticindicator:motorstableoperationindex:speedrange(thebiggerthebetter)Dynamicindex:indexofthetransitionprocesstostartandstopofantiinterferenceprocess8,withaclosurefeedbacksingleloopcontrolsystem,whatisthecurrentfeedback?Underwhatcircumstancesdothecurrentfeedbacksignalsb
7、eadded?Answer:thecurrentnegativefeedbackeffectislimiting,addingacurrentfeedbacksignalinflowcondition9.Thesingleclosedloopspeedregulationsystemwiththefeedbackfeedbackcontrolthespeedofthemotor,andthestartingcharacteristicsofthemotorbecomeworse.Why?Answer:thesinglespeedclosedloops
8、peedregulationsystemwithcurrentcutoffnegativefeedbacko
