›› 2016, Vol. 36 ›› Issue (2): 37-.doi: 10.16708/j.cnki.1000-758X.2016.0002

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HighprecisionmicronanosatelliteformationkeepingbasedonSiCMEMSmicrothrusterarray

 FAN  Lin-Dong, YANG  Bo, MIAO  Jun, LONG  Jun, LIU  Xu-Hui   

  1. 1SchoolofAstronautics,BeihangUniversity,Beijing100191,China
    2BeijingInstituteofControlEngineering,Beijing100190,China
  • Received:2015-07-02 Revised:2015-10-16 Online:2016-04-25 Published:2015-09-28

Abstract: Withthedevelopmentofthemicro/nanosatellites,theproblemofthestationcontrolneedstobesolved.Thetraditionalpropulsiontechnologycan′tmeettherequirementsofhighprecision.Therefore,theSiCMEMSMicrothrusterarraywasproposedfortheformationkeepingofthemicro/nanosatellites.Consideringthedifferentcharacteristicsofthearrayfromthetraditionalthruster,theinputandoutputmodelwasestablishedandtheinstantaneouspulsecontrolstrategywaspresentedtokeeptheformation.Thesimulationresultsshowthatthearraycanbeappliedtotheneardistanceformationofmicro/nanosatellites,andithasahighpositionaccuracyof3mm.Inaddition,thethrusters′consumptionandcontrolprecisioninfluencedbythesinglethrusterchargeandcontrollerparameterswereanalyzed.Whentheimpulseofthesinglethrusterrangeis8×10-6~20×10-6N·s,itcangetgoodcontrol.

Key words: satelliteformationkeeping, MEMS;microthruster, instantaneouspulsecontrol, parameteroptimization, micronanosatellite