›› 2016, Vol. 36 ›› Issue (4): 74-.doi: 10.16708/j.cnki.1000-758X.2016.0039

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AnalysisandsimulationonMEMSgyrorotarynavigationerror

ZHOU  Qiong-Feng, KANG  Guo-Hua, CHEN  Xue-Fen   

  1. 1CollegeofAstronautics,NanjingUniversityofAeronauticsandAstronautics,Nanjing210016,China
    2CollegeofAutomationEngineering,NanjingUniversityofAeronauticsandAstronautics,Nanjing210016,China
  • Received:2015-11-26 Revised:2015-12-30 Online:2016-08-25 Published:2016-05-11

Abstract: Currently,theresearchandapplicationhasbeenquitematureonrotatingmodulationtechnologyofnavigationbasedonhighprecisiongyroscope.TherotatingmodulationtechnologywasintroducedtorealizehighprecisionapplicationofthelowprecisionMEMSgyroscope.Accordingtothetheoreticalanalysisandsimulationofnavigationerrorwithrotatingmodulationornot,theeffectsondifferentprecisiongyroscopewerecomparedunderthesamecondition.Aswell,thefactorsthatinfluencedthemodulationresultwasanalyzedindetail.Itturnsoutthat,comparedtohighprecisiongyroscope,therotationmodulationeffectoflowprecisionMEMSgyroscopeismoreobviousinthesamecondition,andmorethan30%navigationerrorisreducedinthe100sduetorotation.Inaddition,developinghighprecisionrotatingmodulationturntableisalsooneofthekeytechnologiesofimprovingtheaccuracyoftheMEMSgyroscoperotationmodulation.

Key words: rotatingmodulation, MEMSgyroscope, modulationturntable, navigationerror, modulationrateerror