hit审审1号微型小卫星姿态控制系统设计-design of attitude control system for hit trial 1 microsatellite.docx

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2018-05-29 发布于上海
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hit审审1号微型小卫星姿态控制系统设计-design of attitude control system for hit trial 1 microsatellite.docx

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hit审审1号微型小卫星姿态控制系统设计-design of attitude control system for hit trial 1 microsatellite

AbstractMicrosatellitetechnologyundergoesrapiddevelopmentandbecomesaleadingtechnologyinaerospaceindustry,sincetheconceptofmodernsatellitehasbeenproposedbyUSAirForcein1980s.AttitudeDeterminationControlSubsystemofmodernmicro-satellite,asamajorcomponentofmicrosatellite,shouldpossesssimple,light,reliableandlow-costfeatures.Thepaperanalyzestheattitudedeterminationsystem,activemagneticcontrolandrealizationofcontrolalgorithmhardwarewiththecaseofHIT-1micro-satellite.Firstly,thepaperconfirmssatellitesgeneralrequirementtoattitudedeterminationandcontrolsystemontheanalysisofHIT-1.Itpointsoutapracticalgeneralsystemproposalonthecomparisonbetweenattitudemeasurementandcontrolmethod:takingvectorofgeomagneticintensityandvectorofsunorientationasbasicattitudemeasurementmethod,takingpitchingbiasmomentumflywheelandthree-axismagnetic-coilasattitudecontrolsystem.Asforattitudedeterminationsubsystem,thepaperanalyzestwoattitudesensors.Ittakessatellitessolarbatterymultiplexingassolarsensortocalculatesunorientationonthebasisofstructuremultiplexingconcept.Itsolvestheproblemsofattitudemeasurementanddeterminationunderthenon-directionsensitiveconditions.Itcheckedtheprecisionandapplicationscopeofattitudedeterminationalgorithmbymathematicalsimulationexperiment.Asforattitudecontrolsubsystem,thepapertakesthree-axismagnetic-coilcombinedbypitchingbiasedmomentumflywheelasmainpartofcontrolsystem.Itpointsoutthestagesofspinup,rotation,andthree-axisstabilizing.Meanwhile,itcheckedbymathematicalsimulationexperimentandmadeparametersdesignofmomentumwheelandthree-axismagnetic-coil.Finally,thepaperdesignsmaincontrolboardanditsmainfunctionalmoduleforHIT-1attitudedeterminationandcontrolsystembasedonDSPandotherdigitalcircuittechnology.Itchoserelateddevice,andinterface.Besides,itmadeapreliminaryanalysisofDSPcontrolalgorithmhardwarebasedonDSP:itrealizedpinup,rotation,andthree-axisstabilizingbyhardwarelanguagewiththeobjectivedeviceofTIcompanysDSPseriesTMS320LF2407CMOSchip.Itsetmicro-satelliteattitudecontrolsimulationsyst