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1、INVITEDPAPERASurveyofRecentResultsinNetworkedControlSystemsWhensensorsandactuatorscommunicatewitharemotecontrolleroveramulti-purposenetwork,improvedtechniquesareneededforstateestimation,determinationofclosed-loopstabilityandcontrollersynthesis.ByJoa˜oP.Hespanha,SeniorMe
2、mberIEEE,PayamNaghshtabrizi,StudentMemberIEEE,andYonggangXu,MemberIEEEABSTRACT
3、Networkedcontrolsystems(NCSs)arespatiallydistributedsystemsforwhichthecommunicationbetweensensors,actuators,andcontrollersissupportedbyasharedcommunicationnetwork.Wereviewseveralrecentresults
4、onestimation,analysis,andcontrollersynthesisforNCSs.Theresultssurveyedaddresschannellimitationsintermsofpacket-rates,sampling,networkdelay,andpacketdropouts.Theresultsarepresentedinatutorialfashion,comparingalternativemethodologies.Fig.1.GeneralNCSarchitecture.KEYWORDS
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6、Automaticcontrol;communicationnetworks;estimation;networkedcontrolsystems(NCSs);stabilitydedicatedindependentconnectionsVintroducesnewchallenges,andMurrayetal.[39]identifycontroloverI.INTRODUCTIONnetworksasoneofthekeyfuturedirectionsforcontrol.Networkcontrolsystems(NCSs
7、)arespatiallydistributedNCSslieattheintersectionofcontrolandcommuni-systemsinwhichthecommunicationbetweensensors,cationtheories.Traditionally,controltheoryfocusesonactuators,andcontrollersoccursthroughasharedband-thestudyofinterconnecteddynamicalsystemslinkedlimiteddigi
8、talcommunicationnetwork,asshowninthroughBidealchannels,[whereascommunicationtheoryFig.1.studiesthetransmissionofinformationoverBimperfectTheuseofamultipurposesharednetworktoconnectchannels.[Acombinationofthesetwoframeworksisspatiallydistributedelementsresultsinflexiblea
9、rchitec-neededtomodelNCSs.Thissurveyisprimarilywrittenturesandgenerallyreducesinstallationandmaintenancefromacontrolsperspectiveandattemptstosystematicallycosts.Consequently,NCSshavebeenfindingapplicationaddressseveralkeyissuesthatmakeNCSsdistinctfrominabroadrangeofarea
10、ssuchasmobilesensornetworksothercontrolsystems.[52],remotesurgery[33],hapticscollaborationoverthea)Band-Limite
