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1、ThepropertiesandapplicationofphotoelectricencoderTheworkingprinciple,photoelectricencoderPhotoelectricencoder,isakindofphotoelectrictransformationthroughthemachinewilloutputshaftgeometricdisplacementconvertpulseordigitalsensors.Thisisthemostsensor,photoelectricencoderandgratingisbyphotoelectricd
2、etectiondevice.Gratingisincertainpartsofthediameterofthecircularplatetoopenseveralrectanglehole.Causedbythecode,motorandmotorcoaxialrotatesgratingandmotorrotatespeed,withthelightemittingdiodeandotherelectroniccomponentstestingunitoutputpulsesignalwithseveral,itsprinciplediagramisshowninfigure1,T
3、hroughthecalculationoftheoutputpulseofphotoelectricencoderpernumbercanreflectthecurrentmotorspeed.Inaddition,thedirectionofrotation,thecodeforthejudgemayalsoprovidephasedifferencedishof90ºtwopulses.Accordingtothemeasuringprinciple,encodercanbedividedintoopticalandmagnetictype,inductiveandcapacit
4、or.Accordingtothecalibrationmethodandthesignaloutputform,canbedividedintoincremental,absolutelyandhybridthree.IncrementalencoderIncrementalencoderisdirectlyfortheuseofphotoelectricpulseoutputthreesquareprincipleofAandBandZ,AandBgroupphase,pulse90ºcaneasilyidentifyrotationdirection,andforeverytur
5、nAphaseZbenchmarkforpositioning.Pulse,Itsadvantagesaresimplestructure,mechanicalprinciple,averagelifeexpectancyintensofthousandsofhours,stronganti-jammingcapability,highreliability,suitableforlongdistancetransmission.Itsdefectisnottheabsoluteoutputshaftrotationlocationinformation.图1光电编码器的远离示意图Ab
6、solutephotoelectricencoderAbsoluteencoderisdirectdigitaloutputsensor,initscircularyardsonseveralconcentricyardsalongtheradialdirectionofeveryfaith,bypervioustolightandnotpervioustolight,thesectorandtheadjacentcodenumberofsectors,encoderisdoublethecodenumberofbitsofitinthecodeofdigits,lightsource
7、,theothersideisonewordhasacorrespondingyardphotosensitivecomponents,Whenthecodeindifferentposition,thedishbyvariousphotosensitivecomponentsaccordingtothecorrespondingconversionorlightsignals,binary18numberlevel.Thisisnotthee
