挠性接头细颈的电感测量法

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1、第16卷第3期2008年6月中国惯性技术学报JournalofChineseInertialTechnologyVr01．16NO-3Jun．2008文章编号：1005-6734(2008)03·0371-04InductivemeasurementonthinneckofflexiblejointZHA0Hui，CHENZhu(TianjinNavigationInstrumentsResearchInstitute，Tianjin300131，China)Abstract：IIlviewthatsomeprobl

2、emsexistedinmeasuringthewallthicknessoftheflexiblejointthinneck,such雒thewallistoothinandeaSydeformation，themeasuringspaceistoonalTOW，thepaperpresentameasuringmethodusingdouble-probeinductance．First,itbrieflyintroducesthepresentmethods，includingtheiradvantagesan

3、ddisadvantages．ThenitdescribesthemeaSuringprincipleandinstrumentstructure．Thesum／differenceCalculusMethodwasappliedinprocessingthemeasuringresultswhicheffectivelyremovedthemainerrorsource，i．e．thedeformationofmeasuringrod．Bye*Troranalysisonthevariouscomponentsof

4、thewholedevice，itisconcludedthattheaccuracyofthemeasurementdevicereaches1p．m．Themeasurementdeviceissimpleinstructureandeasytoimplementandquicktomeasure．Additionally，thethicknessofinternalorexternaljoint’Swallanditstapercanberespectivelymeasuredbyreplacingthecor

5、respondingmeasuringfixture．Keywords：flexiblejoint；wallthicknessmeasurement；measurementbyinductance；sum／differencecalculation挠性接头细颈的电感测量法赵慧，陈祝(天津航海仪器研究所，天津300131)摘要：针对挠性接头细颈壁厚测量时所遇到的壁薄易变形，测量空间狭小等问题，在介绍了目前几种测量接头壁厚方法及其优缺点后，重点阐述了双测头电感测量法的工作原理，测量设备的结构装置，对于测量结果采用和差演算

6、法来有效消除测杆变形这项主要误差来源．在分析整套设备的各个误差分量后得出：该装置测量精度达到了lum，该设备具有结构简单，易于实现，测量速度快的优点．另外还可以通过更换相对应的测量夹具分别测量内外接头细颈的壁厚及其锥度．关键词：挠性接头；壁厚测量；电感测量法；和差演算Flexiblegyrohaswideapplicationininertialinstrument．Theflexiblejointisthekeytransducerofflexiblegyroscope，anditsmachiningprecisi

7、ondeterminestheperformanceofthewholegyro．IthasbeendevelopedandproducedforseveraltensofyearsinChina,buttherearestillmanyproblemsunsolvedtiHnowduetoitscomplicatestructure．highaccuracy,anddifficultmachiningandmeasurement．1StructureoftheJointandmachiningmethodofits

8、thinneckTheflexiblejointisclaSsifiedintointernaljointandexternaljoint,andeachhaS8holesof02．5mm,inwhichevery2holesformathinneck．TheinternaljointstructureisshowninFig．1．Sincet