基于单码道绝对位置编码的光电式轴角编码器

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1、北京交通大学硕士学位论文基于单码道绝对位置编码的光电式轴角编码器姓名：王阳申请学位级别：硕士专业：安全技术及工程指导教师：朱衡君20061201J匕京交通人学硕士学位论文学位论文单码道绝对位置编码克服了传统位置编码随精度提高而码道增多，工艺上不易实现的缺点，可缩减码盘的尺度，并可根据工程需要，生成相应的精度的编码，为绝对位置角度传感的高精度、小型化、集成化丌辟了一条新的途径。图40幅，表14个，参考文献57篇．关键词：绝对位置角度传感器：索引式绝对位置编码；均布式绝对位置编码：单码道绝对位置编码；卡诺图：格雷码；m序列；伪随

2、机序列分类号：TH741北京交通人学硕士学位论文学位论文ABSTRACTABSTRACT：Withthedevelopmentofmanufacturealldauto-technology．encoder,thecombinationofdigitalandcomputertechnology，havebeenwidelyappliedintopractice．Recentyears．theminiaturizedencoderhasmadechallengestothetraditionalone．Itseamthatt

3、hestudyofnewcodingtheory,theinventionofnewtypesofencodingdisk,andtheusingofadvancedelectronictechnologyindevelopmentofnewabsolutephotoelectricencoderhasbeenatendency．Thispaper,absoluteencoderbasedonasingletracLisfocusedonthestudyofnowabsoluteelectroniccodingsystem．

4、Accordingtothequantityandreadingpositionthatthecodingdiskrequires．itcanbecategorizedintotheindexabsoluteencoderandtheuniformabsoluteencodef．Bypseudo-randomscqllenCe,theindexabsoluteencoderc锄beindexedeasilyandaccurately．Thispaperputsforwardsitsapplicationinabsolutea

5、ngularencoderandthegenerationofencoder．Consideringitisasingletrackencoder,thepseudo-randomsequenceindexabsoluteencoder,lengthP=2。-1，isgeneratedbasedonm-sequenoe．Inthemethodofaddingz锄inadvance,itgetsindexwiththenumberof2。rangingfromzeroto24-1．HoweveLthemethod,m-sequ

6、encecutting,canbeadoptedtogetallindexlessthan2。-1withfirstplacec,ormection．Inthisc蕾c’theq时耐ofgmmatinghighmakai搭olammcoderisfasterthinthatofsearchingstepbystep．ThenumberoftracksincreasingrespondspositivelytotheaccuracyofthetraditionalGraycodingdisk,whichisagainstthe

7、miniaturizationofangleencoder．Besides，thehigherthetechnologyis,thehigherthecostis．n”indexabsoluteencoderd斌．accordingtotheprojects,needsonlytwolacks．namelythesynchronoustrackandtheindex缸ack,andthreephotosensitivereadingheadsforhighrankindexencodertoreadabsoluteposit

8、ionalnumbers，whichisinfavorofadvancingminiaturizationaswellasreducingthecostandtechnology．Thus，itishighlyworthwhilepromoting．11坞numberoftracksinc