基于滑模方法的挠性航天器姿态稳定控制.pdf

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1、机床与液压Dec．2014HydromechatronicsEngineeringVo1．42No．24DOI：10．3969／j．issn．1001-3881．2014．24．004Slidingmodebasedcontrollerdesignforflexiblespacecraftat-titudestabilizationXiao—pingSHI，LongLI，JingYANG，Xian—ringBI，Hai—longLIUControlandSimulationCenter，SchoolofAstronautics，HarbinInstituteofTech

2、nology，Harbin150080，ChinaAbstract：Attitudestabilizationforcomplexnonlinearspacecraftwithflexibleappendagesisre—searchedatthepresenceofexternaldisturbancesandorbitalmaneuver．Aflexiblespacecraftat—titudecontrollerbasedonslidingmodealgorithmisproposed，whichonlyneedstheinformationofattitudea

3、ngularwithouttheknowledgeoftheattitudeangularvelocityandexhibitexcellentrobustperformance．ThepaperdemonstratesthecloseloopsystemstabilityemployingtheLyapunovstabilitytheo~．Thesimulationresultsilustratethisflexiblespacecraftattitudecontrolsystemmaintainstableinspiteofexternaldisturbancean

4、dorbitcontrolforce．Keywords：Flexiblespacecraft，Attitudestabilization，Uncertainty，Slidingmodeattitudeoftheleader，whiletheangularvelocitywill1．Introductionconvergetozeroinfinitetime．Inpaper[4]，theproblemofinertialpointingforaspacecraftwithmag—Spacecraftattitudecontrolsystemisanimportantnet

5、icactuatorsisaddressedandanalmostglobalso—partinthewholespacecraftcontrolsystem，consider—lutiontotheproblemisobtainedbymeansofstaticableamountofworkhasbeendedicatedinrecentattitudeandratefeedback．Alocalsolutionbasedonyearstotheproblemsofspacecraftattitudecontro1．dynamicattitudefeedbackis

6、alsopresented．Simula—Thepaper[1]addresstheattitudestabilizationprob—tionresultsdemonstratethepracticalapplicabilityoflemforaspacecraftisthroughthecombinationof0p—theproposedapproach．Theproblemofattitudestabi—timalcontrolandslidingmodevariablestructurecon—lizationforaspacecraftsystemwhich

7、isnonlinearintrolmethod．Theproposedcontrollerisalsorobusttodynamicswithinertiauncertaintyandexternaldis—externaldisturbances．Foranunderactuatedspace—turbanceisinvestigatedinpaper[5]，anadaptivecraftwithtwocontrolactuators[2]，designsanatti—lawisappliedtoestimatethedisturban