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1、IEEETRANSACTIONSONAUTOMATICCONTROL,VOL.53,NO.4,MAY20081025parameters(whicharegeneratedfromtheparametersofthelinearsys-ANewH∞StabilizationCriterionforNetworkedtemandthedensityfunctionofthehysteresis)directlyneededintheControlSystemsformulationoftheslidingmodecontrollerareadaptivel
2、yestimatedon-line.TheproposedcontrollawguaranteesthestabilityofthecontrolledXiefuJiang,Qing-LongHan,ShirongLiu,andAnkeXuesystem,andtheoutputtrackingerrorcanbecontrolledtobeassmallasdesiredbychoosingthedesignparameters.Simulationresultsshowtheeffectivenessoftheproposedmethod.Abstr
3、actThisnoteisconcernedwithrobustH∞controloflinearnet-workedcontrolsystemswithtime-varyingnetwork-induceddelayanddatapacketdropout.AnewLyapunovKrasovskiifunctional,whichmakesuseoftheinformationofboththelowerandupperboundsofthetime-varyingACKNOWLEDGMENTnetwork-induceddelay,ispropos
4、edtodriveanewdelay-dependentH∞stabilizationcriterion.Thecriterionisformulatedintheformofanon-Theauthorswouldliketothankthereviewersfortheirconstructiveconvexmatrixinequality,ofwhichafeasiblesolutioncanbeobtainedbycommentsandcriticisms.solvingaminimizationproblemintermsoflinearmat
5、rixinequalities.Inordertoobtainmuchlessconservativeresults,atighterboundingforsometermisestimated.Moreover,noslackvariableisintroduced.Finally,twoREFERENCESnumericalexamplesaregiventoshowtheeffectivenessoftheproposeddesignmethod.[1]A.A.Adly,I.D.Mayergoyz,andA.Bergqvist,Preisachmo
6、delingofmagnetostrictivehysteresis,J.Appl.Phys.,vol.69,no.8,pp.57775779,IndexTermsDatapacketdropout,exponentialstability,H∞control,1991.linearmatrixinequality(LMI),network-induceddelay,networkedcontrol[2]K.J.AstromandB.Wittenmark,AdaptiveControl.Reading,MA:system(NCS).Addison-Wes
7、ley,1989.[3]H.T.BanksandR.C.Smith,HysteresismodelinginsmartmaterialI.INTRODUCTIONsystems,J.Appl.Mech.Eng,vol.5,pp.3145,2000.[4]M.BrokateandJ.Sprekels,HysteresisandPhaseTransitions.NewInmanycomplicatedcontrolsystems,suchasmanufacturingplants,York:Springer-Verlag,1996.powerplants,a
8、utomobiles,aircrafts,androbotmanipulator
