推力不對稱時民機飛行控制律重構技術研究.pdf

1、南京航空航天大學碩士學位論文推力不對稱時民機飛行控制律重構技術研究姓名：姬猛申請學位級別：碩士專業(yè)：模式識別與智能系統(tǒng)指導教師：江駒201103推力不對稱時民機飛行控制律重構技術研究IIABSTRACTEngineOutisthemainreasoncausingcivilaircraftaccidentsespeciallyinthephasesofapproachingling.Thrustasymmetrycausedbytheo

2、utboardengineinonesideoutofwkresultsinabnmalattitudetheaircraftdeviatesfromtheidealdirection.Todealwiththedynamicacteristicschangingoftheaircraftwithengineinoperativecontrollawreconfigurationisaneffectivemethodfsafefligh

3、t.Thetechnologyofcontrollawconfigurationfflightcontrolsystemoftheaircraftwithasymmetricthrustismainlystudiedinthisthesis.ThelongitudinallateralmathematicmodelsofA300inthephasesofapproachlingareestablishedfirstly.Baseoncl

4、assiccontroltheynmalcontrollawsincludingpitchattitudecontrollawaltitudecontrollawairspeedkeepingcontrollawrollattitudecontrollawheadingcontrollawlateralbiascontrollawaredesigned.Numericalsimulationresultsshowthatthecontr

5、ollawsdesignedwkeffectivelyinnmalflightcondition.Then，thedynamicacteristicsofaircraftwithasymmetricthrustareanalyzedtheetically.Thefeasibilitythatconstantdisturbancefcesmomentscanbeintroducedtosimulatethethrustasymmetryi

6、sdemonstratedbynumericalsimulation.Thecontrollabilityconditionsbalancedflightattitudeinthecaseofthrustasymmetryarestudiedbasedonflightdynamics.Simulationresultsindicatethatnmalcontrollawsperfmbadlyduetostaticerrinthethru

7、stasymmetryflightconditionflightattitudeoftheaircraftisunsuitablefling.Finallyinthecaseofasymmetricthrustreconfiguredcontrollawsaredesigned.Numericalsimulationresultsdemonstratethatthereconfiguredcontrollawshavegoodcontr

8、oleffect.Themethodtosuppresstransientwhichcanensurethesmoothswitchingfromnmalcontrollawstoreconfiguredcontrollawsisstudiedprovedeffectivebysimulation.KeyWds:flightcontrolthrustasymmetrycontrollawconfigurationcivilaircraf