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1、ThepropertiesandapplicationofphotoelectricencoderTheworkingprinciple,photoelectricencoderPhotoelectricencoder,isakindofphotoelectrictransformationthroughthemachinewilloutputshaftgeometricdisplacementconvertpulseordigitalsensors.Thisisthemostsensor,photoelectricencode
2、randgratingisbyphotoelectricdetectiondevice.Gratingisincertainpartsofthediameterofthecircularplatetoopenseveralrectanglehole.Causedbythecode,motorandmotorcoaxialrotatesgratingandmotorrotatespeed,withthelightemittingdiodeandotherelectroniccomponentstestingunitoutputpu
3、lsesignalwithseveral,itsprinciplediagramisshowninfigure1,Throughthecalculationoftheoutputpulseofphotoelectricencoderpernumbercanreflectthecurrentmotorspeed.Inaddition,thedirectionofrotation,thecodeforthejudgemayalsoprovidephasedifferencedishof90°twopulses.Accordingto
4、themeasuringprinciple,encodercanbedividedintoopticalandmagnetictype,inductiveandcapacitor.Accordingtothecalibrationmethodandthesignaloutputform,canbedividedintoincremental,absolutelyandhybridthree.IncrementalencoderIncrementalencoderisdirectlyfortheuseofphotoelectric
5、pulseoutputthreesquareprincipleofAandBandZ,AandBgroupphase,pulse90°caneasilyidentifyrotationdirection,andforeveryturnAphaseZbenchmarkforpositioning.Pulse,Itsadvantagesaresimplestructure,mechanicalprinciple,averagelifeexpectancyintensofthousandsofhours,stronganti-jamm
6、ingcapability,highreliability,suitableforlongdistancetransmission.Itsdefectisnottheabsoluteoutputshaftrotationlocationinformation.放大整形GT图1光电编码器的远离示意图AbsolutephotoelectricencoderAbsoluteencoderisdirectdigitaloutputsensor,initscircularyardsonseveralconcentricyardsalong
7、theradialdirectionofeveryfaith,bypervioustolightandnotpervioustolight,thesectorandtheadjacentcodenumberofsectors,encoderisdoublethecodenumberofbitsofitinthecodeofdigits,lightsource,theothersideisonewordhasacorrespondingyardphotosensitivecomponents,Whenthecodeindiffer
8、entposition,thedishbyvariousphotosensitivecomponentsaccordingtothecorrespondingconversionorlightsignals,binarynumberlevel.Thisisnot
