资源描述：
《信息工程 外文翻译 外文文献 英文文献 光电编码器原理及应用电路》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。
1、PrincipleandapplicationofthephotoelectricencodercircuitAccordingtothetestprinciple,encodercanbedividedintoopticaltype,magnet,inductiveandcapacitive.Accordingtoitscalibrationmethodandsignaloutputform,canbedividedintoincremental,absolutetypeandhybrid3kinds.Incrementalencoderisdirectlyfortheuseofp
2、hotoelectricconversionprincipleoutputthreesquarewavepulsedA,BandZphase;A,Btwogroupsofpulsephasedifference90DHS,thuscaneasilytelldirectionofrotation,andZforeveryturninapulse,usedtobenchmarkpositioning.Itsadvantagesaresimplestructure,mechanicalprincipleofaveragelifeexpectancyinthetensofthousandso
3、fhoursabovecanbe,stronganti-jammingcapability,highreliability,suitableforlongdistancetransmission.Itsdefectisunabletooutputshaftrotationabsolutelocationinformation.Absoluteencoderisdirectoutputdigitalquantitysensor,initscircularyardsplatealongradialdirectionseveralconcentricyardsway,eachofwhich
4、waythebypervioustolightandopaqueandsectorofthesector,adjacentcodewordnumberisdoublerelationship,yardsdishthecodewordisitsbinarynumberofdigits,digitalsideinthecodesalverilluminant,anothersidecorrespondingtoeveryoneyardwayhaveaphotosensitivecomponent;Whenyardsindifferentposition,diskbyvariousphot
5、osensitivecomponentsaccordingtothecorrespondinglightornotconversion,formingabinarynumberlevelsignal.Thecharacteristicsoftheencodercounterandaxisisnotinanypositioncanbereadoutafixedpositionandcorrespondingdigitalyards.Obviously,codeword,themorethebettertheresolution,foranNbinaryresolutioncoderco
6、desalvermusthaveNbarcodeway.ForanNbinaryresolutioncodercodesalvermusthaveNbarcodeway.Atpresentdomestichave16bitsofabsoluteencodersproducts.Absolutephotoelectricencoderisusenaturalbinaryorcirculationbinary(Gregoryyards)mannerphotoelectricconversion.Absolutephotoelectricencoderandincrementalencod
7、erdifferenceindiskpervioustolight,opaquelinegraph,absoluteencodercanhavesomecode,accordingtoreadyardsplatecoding,detectionabsoluteposition.Codedesigncanusebinarycode,recyclingyards,binaryfillyards,etc.Itsfeaturesare:(1)candirectly
