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1、ThepropertiesandapplicationofphotoelectricencoderTheworkingprinciple,photoelectricencoderPhotoelectricencoder,isakindofphotoelectrictransformationthroughthemachinewilloutputshaftgeometricdisplacementconvertpulseordigitalsensors.Thisisthemostsensor,photoelectricencoderandgratingisbyp
2、hotoelectricdetectiondevice.Gratingisincertainpartsofthediameterofthecircularplatetoopenseveralrectanglehole.Causedbythecode,motorandmotorcoaxialrotatesgratingandmotorrotatespeed,withthelightemittingdiodeandotherelectroniccomponentstestingunitoutputpulsesignalwithseveral,itsprincipl
3、ediagramisshowninfigure1,Throughthecalculationoftheoutputpulseofphotoelectricencoderpernumbercanreflectthecurrentmotorspeed.Inaddition,thedirectionofrotation,thecodeforthejudgemayalsoprovidephasedifferencedishof90ºtwopulses.Accordingtothemeasuringprinciple,encodercanbedividedintoopt
4、icalandmagnetictype,inductiveandcapacitor.Accordingtothecalibrationmethodandthesignaloutputform,canbedividedintoincremental,absolutelyandhybridthree.IncrementalencoderIncrementalencoderisdirectlyfortheuseofphotoelectricpulseoutputthreesquareprincipleofAandBandZ,AandBgroupphase,pulse
5、90ºcaneasilyidentifyrotationdirection,andforeveryturnAphaseZbenchmarkforpositioning.Pulse,Itsadvantagesaresimplestructure,mechanicalprinciple,averagelifeexpectancyintensofthousandsofhours,stronganti-jammingcapability,highreliability,suitableforlongdistancetransmission.Itsdefectisnot
6、theabsoluteoutputshaftrotationlocationinformation.图1光电编码器的远离示意图AbsolutephotoelectricencoderAbsoluteencoderisdirectdigitaloutputsensor,initscircularyardsonseveralconcentricyardsalongtheradialdirectionofeveryfaith,bypervioustolightandnotpervioustolight,thesectorandtheadjacentcodenumbe
7、rofsectors,encoderisdoublethecodenumberofbitsofitinthecodeofdigits,lightsource,theothersideisonewordhasacorrespondingyardphotosensitivecomponents,Whenthecodeindifferentposition,thedishbyvariousphotosensitivecomponentsaccordingtothecorrespondingconversionorlightsignals,binarynumberle
8、vel.Thisisnottheenc
