Inthispaper,anactivefaultaccommodatestrategyisproposedfortheplantinthepresenceofactuatorfaultandinputconstraints,whichisacombinationofadirectadaptivecontrolalgorithmwithmultiplemodelswitching.Theμ-modificationisintroducedinthemodelreferencearchitecturetoconstructtheadaptivecontroller.TheproofofstabilityisbasedonthecandidateLyapunovfunction,whileappropriateswitchingofmultiplemodelsguaranteesasymptotictrackingofthesystemstatesandtheboundednessofallsignals.Simulationresultsillustratetheefficiencyoftheproposedmethod.