Nonlinear instability suppression of closed-loop pilot-vehicle system with rate-limiting actuator based on anti-windup compensation-中国Betway体育网页登陆

摘要 Tosolvetheflightsafetyproblemcausedbynonlinearinstabilities(categoryIIpilotinducedoscillations,PIOs)oftheclosed-looppilot-vehiclesystemwithrate-limitingactuator,theantiwindup(AW)compensationmethodtoavoidcategoryIIPIOsisinvestigated.Firstly,theAWcompensationmethodoriginallyusedforcontrollinginputmagnitudelimitedsystemisintroduced,thenthismethodisextendedforcontrollinginputrate-limitingsystemthroughacirclecriteriontheorem.Secondly,theestablishmentoftheAWcompensatoristransformedintothesolvingoflinearmatrixinequalities.Finally,anAWcompensatorestablishmentalgorithmfortheclosed-looppilot-vehiclesystemwiththerate-limitingactuatorisobtained.TheeffectivenessoftheAWcompensationmethodtoavoidcategoryIIPIOsisvalidatedbytime-domainsimulations,andcomparedwithrate-limitedfeedback(RLF)commandratecompensationmethod.TheresultsshowthattheAWcompensationmethodcaneffectivelysuppresscategoryIIPIOsandmaintainthenominalperformancewhentheclosed-looppilot-vehiclesystemisnormal.Unlikethecommandratecompensatorwhichworksuponsystemuninterruptedly,theAWcompensationmethodaffectstheclosed-looppilot-vehiclesystemonlywhentherate-limitingofactuatorisactivated,soitisanovelPIOavoidancemethod.

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Nonlinear instability suppression of closed-loop pilot-vehicle system with rate-limiting actuator based on anti-windup compensation

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