基于模糊理論的車輛主動懸架控制策略與仿真研究

1、Y’’lIa2193分炎號：!：￡211，!UDC：629密級：壘玨學(xué)校代碼：!旦三絲研究生學(xué)。I；：一Sv一2趔盟H西北農(nóng)林講杖大學(xué)2007屆攻讀碩士學(xué)位研究生學(xué)位(畢業(yè))論文基于模糊理論的車輛主動懸架控制策略與仿真研究學(xué)科專業(yè)研究方向研究生指導(dǎo)教師完成時間壅些也越絲工程漁奎塹撞扭性能毯董避垣垃基(熬握!至QQZ生魚旦魚旦中圍陜西楊凌CONTRoLSTRATEGIESANDSIMULATl0NSTUDYFORVEHICLEACTIVE

2、SUSPENSIONBASEDoNFUZZYTHEORYABSTRACTThesuspensionsystemallimportantpartofvehicle，directlyaffectstheperformanceofvehiclelikeridecomfortandhandlingstabilityNowadaysthewidelyusedsuspensionispassivesuspensioncomposedofspring

3、andabsorberWimfⅨedsystemparametersthedesignofpassivesuspensionsystemmustcompromisetheconflictingrequirementsoffidecomfortandhandlingstabilityTherefore，tothevehicleworkinginvariousconditions，thetraditionalpassivesuspensio

4、nhasbd7omeincapacityinmeetingexpecteddemandsofvehicleInordertoovercomethelimitationsofpassivesuspensionactivesuspensioncomesoutTheactivesuspensionisabletoadjustorproducecontrollingforcebel=、】I砌wheelandvehiclebodyaccordin

5、gtoadconditionsSoitcanrestrictvehiclevibrationandimprovetheperformanceofsuspensionandachievethepurposeofimprovingridecomfortandhandlingstabilitysimultaneouslyControlstrategywhichplaysanimportantroleintheperformanceofacti

6、vesuspensionisthecoreofactivesuspensioncontroltechnologyTherearemanycontrolstrategiesforactivesuspensionPIDcontrolregardedasaclassicalandpracticalcontrolmethodhassomeadvantagessuchaslittleworkofcomputingandeasyrealizatio

7、nSoPIDcontrolhasbeenappliedfirstlyasabasiccontrolstrategyFuzzylogiccontrolhasbeenchosenasthesecondcontrolstrategybecauseitfeaturesinsensitivetovariantandindependenceonexactmathematicalmodelofthesystemFuzzyPIDcontrolcombi

8、nesthetwocontrolstrategiesoffuzzycontrolandPIDcontr01ItCaneliminatethedisadvantagesofeachsinglecontrolstrategyandprovidemorestableandreliablecontroleffectscomparedtothesinglecontrolstrategyofPIDorFuzzyInthisdissertationa

9、dynamicmodelofactivesuspensioniscreated，whichisbasedonthevehicledynamicstheoryThemathematicalandsimulatingmodelofmadsurfaceirregularityisalsoestablished，whichisthemodelofintegralwhitenoiseAccordingtothedifferentcontrolth

10、eories，thedissertationindividuallydesignsactivesuspensionPIDcontroller、FuzzycontrollerandFuzzyPIDcontrollerbasedonfilzzytheory，thecomputersimulationsareindividuallybuiltwithMatlab65／SimulinktOverifytherobustofthecontrols