主动悬架控制策略分析与仿真

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1、AbstractThesuspensionsystemwhichistheimportantcomponenttoensurethecontrolstabilityandrideperformanceisthekeystoneofautomobileperformance.Thepassivesuspensionhaslotsoflimitationsforitcanonlyaccepttheroadstimulation.Theactivesuspensionwhichcombinestheadvancedelectroniccontro

2、ltechnologyandtheordinarysuspensionbecomesmoreandmorevalued.Buttherelationshipbetweenactiveforceandthemotionoftheactuatorisalwaysignoredintheactivesuspensionmodelusedinresearchtoday,whichmakesthetolerancefromthefactsystem.Thecontrolstrategybasedonthemoreintegralmodelwillbe

3、researchedinthisthesis.Ahydraulicactuatingcylinderisresearchedaccordingtothehydraulicdesignationtheoryfortheactivesuspension.Thematchingparameterisselectedbytheaimofuseandthematchingprinciple.Throughanalyzingthecharacteristicsandstructuresofproportionalamplifier,proportion

4、alelectro-magnet,slidevalveandhydraulicactuatingcylinder,themathematicalmodelofeachcomponentisbuiltbasedonthefluidandhydraulictheory.Theroadinputmodelisgotthroughmakingthewhitenoisegothroughanintegrator.ThePIDcontrolmodelandLQGcontrolmodelissetupbasedonthetheoryofLQGcontro

5、landPIDcontrol.ThecontrolledaccelerationqualityisadaptedbytheparameterofP,IandDthroughmodelingsimulationofthePIDandLQGcontrol.Thecomprehensiveoptimalcontrolofthecarbodyacceleration,thesuspensiondynamicdeflectionandthetyrodynamicdisplacementcanbegetthroughdesigningthediffer

6、entweightedmatrixandturntheinfluenceextentbythethreecontrolvariable.ThePIDcontrolmodelandLQGcontrolmodelcombinedwiththehydraulicparameteraremorecompletely,whichhaspracticalguidingsignificancetoimprovethecontrolstabilityandrideperformance.Keywords:activesuspension,PIDcontro

7、l,LQGcontrol,hydraulicsystemmodel,simulationii目录第一章绪论...........................................................................................................................11.1汽车悬架概述.......................................................................................

8、.........................11.2主动悬架研究的背景和意义................................................