應用自動跟隨系統(tǒng)擴展霍爾位移測量范圍.pdf

1、廈門大學碩士學位論文應用自動跟隨系統(tǒng)擴展霍爾位移測量范圍姓名：關明杰申請學位級別：碩士專業(yè)：測試計量技術及儀器指導教師：陳文薌2002.5.1AbstractAccordingtoHorel蘭溉ctwhentheHorecomponentisplacedinagradientfield。atthesamctimethedirectionofthecurrentisperpendiculartothedirectionofthevolta

2、ge，thenbetweenthetwoparatlelsidefacecomeouttheHorevoltage，WhenHorecomponentissetintbiskindofunigradientmagneticfieldandtheelectriccurrentisunchanged，thevoltageoutputofHerecomponentwillbeproportionaltothepositionoftheHore

3、component融themagneticfieldSowecanusetheHerecomponenttomeasurethemovementofHerecomponentagainstmagneticfieldComparedtoothefmeans，usingHorecomPOnenttomeasurethedisplacementofobjecthassomeadvantagesincludingsmallertransient

4、response，betterdynamicproperties，non—contactandhigheraccuracyofmeasurementHoweve‘themagneticfieldproducedbycommonmagnetcafflkeepthegradientunchangedonlyinasmallarea，SoifweusecommonmagnetandHorecomponenttomeasurethemoveme

5、ntoftheobjectwecanonlymeasureinasmallarea1fwewanttocomposeinalargerareaaunigradientmagneticfieldthedevicewillbetoocomplicatedandunfitformoveItwillrestricttheapplicationofHorecomponentindisplacementmeasuring1nordertochang

6、ethissituation，nthisdissertation，akindofautotrackingmeasuringsystemisintroducedTheHerecomponentissetonthetrackingmechanicaIsystemtodetectthemagneticfieid，smovementUnderthissituation，theHeretomponentwillalwayskeep“pw痿thet

7、argeFsmovementandkeepinthemagnetsunitarygradientmagneticfieldOnthissubject，ChenWenxiangs(Usingfeedbackservemechanismtoscale—upthemeasurementrangeontheshiftbyHeresensorandChenDongiun’sStudyofakindofHereshiRsensorwithfeedb

8、ackservemechanismhaveachievetherudimentalresultsItshowsthatusingselfqrackingorservesystemtoscale—upthemeasurementrangeoftheHeresensorisreasonableHoweveLthereisstillsomeproblemsintheirstudy：1。Becausetheirapplicationofalte

9、rnatingcurrentchannel，theirsystemcan’tbeappliedunderstaticsituationArawhenthesystemisappliedunderdynamicsituation，therewiltbeagreatphasediscrepancy；2TemperatureinflueneetheHeresensorsgreatlyIntheirstudytheydidn’tgiveoutt

10、hewaystocompensatethetemperaBlreerror；3Theirstudyonthestructureoftheservemechanismisstilltoosimple；Inordertesolvetheproblemsintheirstody，Ihavedonethesejobs：IApplyingadirectcurrentchanneltothesystemtomakeitpossiblethatthe

11、systembeusedunderbothstaticanddyruamicsituationAndthephrasediscrepancywillbelimitedbetween0?！?54underdynamicsituation；2ApplyingatemperaturecompensatingsystemtothewholesystemThetemperatureerrorbelimitedto2％：3Using‘‘Voicec

12、oilmotor’’todefinethe∞r(nóng)vomechanism。andgiveoutadeeperstudyofthestructureoftheservemechanism4Bythewayadisplayingsystemandacommunicatingsystemisadded。ThisdissertationisdividedIntofourchaptersaltogether：chapterorelsthe；ntrod

13、uction，introducingtheHorecomPOnentanditsimportantcharacteristicandputtingforwardthebasictask；ChaptertWOintroducetheprincipleoftheautotrackingsystemandrespectivepartsoftheautotrackingsystem；Chapterthfeeintroducetheapplica

14、tionsofautotrackingsystemunderstaticconditionanddynamicconditionandgiveouttheexperimentresults；Chapterfourintroducedthe硅；s群ayingsystem，communicatingsystemandtheapplicabilityof出eautotrackingsystemtoothersensorsKeywords：He