控制增益符號未知的魯棒自適應(yīng)模糊控制研究.pdf

1、揚州大學碩士學位論文控制增益符號未知的魯棒自適應(yīng)模糊控制研究姓名：裔揚申請學位級別：碩士專業(yè)：計算機應(yīng)用技術(shù)指導(dǎo)教師：張?zhí)炱?0050301摘要(Abstract)AbstractInrecentyears，fuzzymodelingbasedrobustadaptivecontrolfornonlinearsystemshasbeenahottopicinthefieldofintelligentcontr01Somecorrelat

2、iveproblemsinthisareaarestudiedinthispaperFirstlytwodesignschemeofdirectadaptivefuzzycontrollerforaclassofuncertainnonlinearsystemswitllunknowncontrolgainsignareproposedThedesignisbasedontheprincipleofslidingmodecontrola

3、ndtheapproximationcapabilityoffuzzysystemsThefirstwayisabletoavoidtherequirementoftheupperboundofthefirsttimederivationofcontrolgainthroughintroducingthemodifiedintegral—Lyaplmovfunction。Thesecondwaydefinesthemodulationf

4、unctionandquarenteesfuzzyapproachplayaroleonlyinthegivenclosedregion，ThroughusingtheadaptivecompensationtermoftheoptimalapproximationerrorandthepropertyofNussbaumfunction，twowaysavoidtherequirementofaprioriknowledgeofthe

5、signofthefunctioncontrolgain，theclosed—loopcontrolsystemisprovedtobestableinthesensethatallsignalsinvolvedarebounded，withtrackingerrorconvergingtozeroSecondlybasedontheapproximationcapabilityofthesecondtypeoffuzzylogicsy

6、stem、variablestructureadaptivefuzzycontrollerforuncertainnonlinearSISO／MIMOsystemswithunknowncontrolgainsignandnnknowndeadzonemodelisproposed，respectivelyBasedontheintuitiveconceptandpiece—wisedescriptionofdead—zonemodel

7、theapproachdoesnotrequirethebordersofdead—zonemodelparameterstobeknoⅥnathroughadaptivecontroltermIntheprocessofdesign，wecanavoidtherequirementoftheupperboufldofthefirsttimederivationofcontrolgainandaprioriknowledgeofthes

8、ignofthefunctioncontrolgainthroughusingthemodifiedintegral—LyapunovfunctionandNussbaurnfimctionInorderteducethechattinginslidingmodelcontrol，signfunctionisreplacedbysaturationfunctionincontrollawBytheoreticalanalysis，the

9、closed—loopcontrolsystemisprovedtobestableinthesensethatallsignalsinvolvedarebounded，withtrackingerrorconvergingtozeroFinallyadesignschemeofrobustadaptivefuzzycontrollerforaclassofperturbedstrict—feedbacknonlinearsystems