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时间:2020-04-17
《车辆半主动油气悬架模糊控制的建模与仿真.pdf》由会员上传分享,免费在线阅读,更多相关内容在应用文档-天天文库。
1、第33卷第5期北京理工大学学报Vo1.33No.52013年5月TransactionsofBeijingInstituteofTechnologyMay2013车辆半主动油气悬架模糊控制的建模与仿真么鸣涛,龙凯,贺李平(1.中国南方工业研究院,北京100089;2.华北电力大学新能源电力系统国家重点实验室,北京1022063.汽车噪声振动和安全技术国家重点实验室,重庆400039;4.北京无线电测量研究所,北京100854)摘要:为对某工程车辆半主动悬架系统进行可靠控制,针对单筒式油气弹簧建立了数学模型,分析了其刚度特性和阻尼特
2、性以及节流dqL面积的改变对阻尼的影响.提出在防止悬架频繁击穿前提下改善车辆平顺性要求的控制思想,以悬架动挠度及其随时间变化率为控制输入,建立控制模型,并制定模糊控制规则,设计了模糊控制器.分别针对正弦路面激励、积分白噪声随机路面激励以及瞬态阶跃路面激励进行仿真.仿真结果表明:模糊控制策略在悬架半主动控制的应用,不仅可减小悬架击穿的概率,也从统计角度改善了车辆平顺性.关键词:半主动悬架;模糊控制;油气弹簧;动挠度;悬架击穿;平顺性中图分类号:U463.33文献标志码:A文章编号:100卜0645(2013)05—0474—06Mo
3、delingandSimulationofFuzzyLogicControlforVehicularSemi__ActiveHydro。_PneumaticSuspensionYAOMing—tao。LONGKai,HELi—ping(1.ChinaSouthIndustriesResearchAcademy,Beijing100089,China;2.StateKeyLaboratoryforAlternateElectricalPowerSystemwithRenewableEnergySources,NorthChinaEl
4、ectricPowerUniversity,Beijing102206,China;3.StateKeyLaboratoryofVehicleNVHandSafetyTechnology,Chongqing400039,China;4.BeijingInstituteofRadioMeasurement,Beijing100854。China)Abstract:Inordertocarryoutareliablecontrolforasemi—activesuspensionsystemofanengineeringvehicle
5、,amathematicmodelofsinglechamberhydro—pneumaticspringwasestablished.Thecharacteristicsofspringrateanddampingrateaswellastherelationshipbetweenthrottleareaanddampingforcewereanalyzed.Thecontrolstrategyofimprovingvehicleridecomfortwithoutthefrequentsuspensionbreakdownwa
6、sproposed.Thefuzzylogiccontrol(FLC)modelwiththeinputsofsuspensiondeflectionanditschangeratewithtimewasestablished.Therulesoffuzzylogiccontrolwereworkedoutandthefuzzylogiccontrollerwasdesigned.Theresponsesweresimulatedundertheconditionsofroadsurfaceswithsine,integrated
7、randomwhitenoiseandinstantstepinputexcitation,respectively.Accordingtosimulationresults,theapplicationofFICinsemi—activesuspensioncontrollingnotonlyreducesthefrequencyofsuspensionbreakdown,butalsoimprovestherideperformancefromstatisticpointofview.Keywords:semi—actives
8、uspension;fuzzylogiccontrol;hydro—pneumaticspring;dynamicdeflection;suspensionbreakdown;rideperformance收稿日期:2O12—03—02基金项目:中
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