›› 2017, Vol. 37 ›› Issue (4): 28-33.doi: 10.16708/j.cnki.1000-758X.2017.0050

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Engineeringapplicationofmicrosatellite3-axisstablecontrolwithonlymagneticactuators

 YUAN  Qin1,*, KOU  Yi-Min1,2, JI  Yan-Bo1, LI  Chun1   

  1. 1ShenzhenAerospaceDongfanghongHITSatelliteLtd.  ,Shenzhen518054,China
    2Dept.ControlEngineering,HarbinInstituteofTechnology,Harbin150001,China
  • Received:2016-10-26 Revised:2017-01-06 Online:2017-08-25 Published:2017-06-29

Abstract: Toreducethecostandimprovethereliabilityofmicro-satellites,amethodwhichemployingmagnetictorquesastheonlyactuatorswasdevelopedtorealizethreeaxisstablecontrol.Thenbyusinglinearquadraticregulator(LQR)optimalcontroltheory,theinfinitetimestateregulatorandsteadygainregulatorweredesignedtostabilizemicro-satellitetonadirpointingusingfullymagnetictorques.Meanwhile,takingKaiTuo-1satellitein-orbitflightastheresearchobject,theproductofinertia,orbitinclination,residualmagnetismandaerodynamicdragdisturbancethatbringsdifferenteffectsforthecontrolprecisionwereanalyzed.SimulationresultsvalidateefficiencyandpracticabilityofLQRcontroller.Itcanachievehighcontrolprecisionunderlittledisturbance.

Key words: micro-satellite, 3-axisattitudestability, magneticcontrol, optimalcontrol, controlprecision