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ID:57740686
大小:2.98 MB
页数:8页
时间:2020-03-26
《Shupe效应非互易相移按匝传输的精确分析与计算.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第34卷2017年第l期上海AEROSPACE航天SHANGHAI97文章编号:10061630(2017)010097—08Shupe效应非互易相移按匝传输的精确分析与计算成茵瑛(同济大学电子与信息工程学院,上海201804)摘要:为进一步提高干涉型光纤陀螺(IFOG)的Shupe效应非互易相移的计算精度,在柱坐标系中,根据热传递的原理和过程,以l匝光纤线圈为基本单位,在MATI。AB平台上建立了随着轴向、径向和时间变化的IF()G的三维温度场分布模型。根据Shupe效应的原理,基于光波在光纤线圈中的实际
2、传输过程,对热传递动态过程中的时闻元素进行进一步分解,细化为每一匝传输的渡越时间,用插值法使温度场的热传递按匝进行,得到了不同时间点处每匝光纤线圈的温度分布。设计了按匝传输分析计算非互易相移的新方法。对四极对称绕法和交叉对称绕法进行了仿真数值计算,结果表明与原算法相比,新算法的Shupe效应非互易相移计算精度提高了3个量级,符合预期。关键词:干涉型光纤陀螺;按匝传输;Shupe效应;三维温度场;四极对称绕法;交叉对称绕法;非互易相移;计算精度中图分类号:V241.5文献标志码:ADol:10.19328/j
3、.cnki.1006—1630.2017.01.016AccurateAnalysisandCalculationofNonreciprocalPhaseShiftCausedbyShupeEffectAccordingtoTransmissionbyCirclesCHENGYin—ying(SchoolofElectronicsandInformationEngineering,TongjiUniversity,Shanghai201804,China)Abstract:Tofurtherimprovet
4、hecomputationaccuracyofnon—reciprocalphaseshiftcausedbytheShupeeffectofinterferometricfiberopticgyroscope(IFOG),athree—dimensionaltemperaturefielddistributionmodelofIFOGwasestablishedunderthecylindricalcoordinatesystemwhichwasbasedonthebasicunitofcircleand
5、variedbyaxisdirection,radialdirectionandtimeaccordingtOtheprinciplesandprocessofheattransmission.Basedonspecificmicroscopicprocessinlighttransmissionintheopticalfibercoil,anovelcalculatingmethodofnon—reciprocalphaseshiftwasintroducedaccordingtOtheprinciple
6、ofShupeeffects,whichwasdefinedbythetransmissiontimeofeachcircleandtheheattransmissionOfthetemperaturefieldwascalculatedforeachcirclebyinterpolationmethed.TimeelementindynamicprocessofheattransmissionwasdecomposedtOobtainthetemperaturedistributionofeachcirc
7、leoffibercoilatdifferenttimepoint.Thensomenumericalcalculationexperimentsweresimulatedforquadrupolesymmetrywindingmethodandcrossingsymmetrywindingmethod.ThecomputationaccuracyofnonreciprocalphaseshiftcausedbytheShupeeffectwasincreasedbythreeordersofmagnitu
8、decomparedwiththeoriginalalgorithm.TheresultsconformedtOtheexpectations.Keywords:interferometricfiberopticgyroscope;transmissionbycircles;Shupeeffect;three—dimensionaltemperaturefielddistribution;quadrupolesy
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