Chinese Space Science and Technology ›› 2013, Vol. 33 ›› Issue (3): 30-36.doi: 10.3780/j.issn.1000-758X.2013.03.005

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PreciseModelingandApplicationofFluidicRingActuator

 GUAN  Hong, XU  Shi-Jie   

  1. (SchoolofAstronautics,BeihangUniversity,Beijing100191)
  • Received:2012-09-06 Revised:2012-12-03 Published:2013-06-25 Online:2013-06-25

Abstract: Aprecisedynamicmodelofanovelattitudecontrolactuator——thefluidicringactuator(FRA)wasderived.Basedonthepracticalfactorsoftheflowinflowfield,thevariationofvelocitycausedbyviscouswasanalyzed.Theequivalentangularmomentumofthisnovelactuatorwasdeducedbyintegratingthevelocityoneverycrosssectionundertheconsiderationoffluidproperties.Then,theattitudedynamicsofthespacecraftwiththreeorthogonalFRAswasestablished.AnattitudecontrollawwasdesignedaccordingtotheattitudedynamicsofthespacecraftFRAssystem.Finally,simulationresultsdemonstratethattheoutputtorquehassuchadvantagesasfastreactionrateandsmallerrorbyusingtheprecisemodelofFRA.TheapplicationoftheprecisemodelofFRAmakestheattitudecontrolofaspacecraftmoreefficientandaccurate.

Key words: Attitudecontrol, Fluidicringactuator, Lyapunovfunction, Actuator, Spacecraft