工業(yè)以太網(wǎng)的傳輸延時(shí)特性分析與研究.pdf

1、河北工業(yè)大學(xué)碩士學(xué)位論文工業(yè)以太網(wǎng)的傳輸延時(shí)特性分析與研究姓名：劉俊峰申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：控制理論與控制工程指導(dǎo)教師：陳曦20070301工業(yè)以太網(wǎng)的傳輸延時(shí)特性分析與研究iiTHEACTERISTICSANALYSISRESEARCHABOUTTRANSMISSIONTIMEDELAYOFINDUSTRIALETHERABSTRACTWiththeenlargeofcontrolsystemscopewkcontrolsystem

2、sareusedmemeasasuccessfulinfmationwktechniqueindustrialEtherisshowingitsadvantageincontrolwks.ThereexistmanyagreementstardsoffieldbusinindustryunderthecircumstantialofmultiagreementexistingtogetherEtherisextendingtotheco

3、ntrollevelitisahopeofunifyingthefieldbus.Inwkcontrolsystemcontrolsenseganexecuteganasabsolutenodesconnectwithwk.Thusthesystemcableisreducingthesystemiseasytomaintenancebutthedisadvantageisappearwiththewkfeverynodetransmi

4、tsinfmationtimesharingbywktimedelayexistinevitably.ThecurrentcontrolsystemsofEtherconsiderwktransmittimedelayτonlybutthereisnotheybaseincountryinsideoutsidereferencesfwkappendtimedelaysocurrentindustryEtherexistsomeinsta

5、bility.ThispapergivesasystemsummarizerfEtherdevelopmenthistystudystatusquostartingwithEthermediumaccessingCSMACDmethodeduceswktimedelay.Nodesvisitingrateisromsowktimedelayisaromvariableifregardingtheinfmationwhichsendbyn

6、odesascustomerregardingfieldbusasinfmationdeskthusaqueuesystemiscomingsettingupamodelanalyzingwktransmittimedelayusingqueuingtheythenwecanobtainthatsendingtimedelayqueuingtimedelaycausedbyconflictsamongwktacheinwkcontrol

7、systemswecanknowthemainfactswhichaffectchannelutilizationrate.Analyzingtimedelayimpacttothesystemcapabilityeducingsomeaccountfmulasgoalongdataemulat.Baseontheanalyzingofwktimedelaythewkcontrolsystemismodelingfauncertaint

8、ydispersetimedelaymodelusingStabilitytheyofLyapunovdiscussedthesystemstability.Combiningwithagivenquadraticperfmanceindexanecessarysufficientconditionftheexistenceofguaranteedcostcontrolsisderivedcontrolparameterguarante

9、edcostvalueofguaranteedcostcontrolisbegivenusinglinearmatrixinequalities(LMI)throughdemonstration.Lastlythepaperillustratedthevalidityofthismethod.KEYWDS:industrialEthertimedelayqueuingtheymatrixinequalitiesRobuststabili