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1、第七节第七节主动悬架和半主动悬架主动悬架和半主动悬架车辆主动悬架系统是在悬架中附加一个可控制作用力装置,通常由四部分组成车辆主动悬架系统是在悬架中附加一个可控制作用力装置,通常由四部分组成:执行机构:执行机构:执行控制系统指令。如:液压缸、气缸、电动机等。执行控制系统指令。如:液压缸、气缸、电动机等。测量系统:测量系统:测量系统各状态,为控制系统提供依据。如各种传感器。测量系统各状态,为控制系统提供依据。如各种传感器。控制系统:控制系统:处理数据,发出各种控制指令。如:电子计算机。处理数据,发出各种控制指令。如:电子计算机。能源系统:能源系统:为以上各部分提供能源。为以上各部分提供能源。全主动
2、悬架(有源主动悬架):全主动悬架(有源主动悬架):可调节悬架刚度和阻尼。可调节悬架刚度和阻尼。半主动悬架(无源主动悬架):半主动悬架(无源主动悬架):只能调节悬架阻尼。只能调节悬架阻尼。微处理机微处理机电动机电动机半主动悬架半主动悬架阀杆阀杆全主动悬架全主动悬架悬架下支悬架下支 承承摆臂摆臂传感器传感器油箱油箱油泵油泵储储压器压器油油气气弹簧弹簧主动悬架系统:主动悬架系统:被被动悬架动悬架工工作作演示演示全主动悬架(有源主动悬架):可调节悬架刚度和阻尼全主动悬架(有源主动悬架):可调节悬架刚度和阻尼半主动悬架:只能调节悬架阻尼半主动悬架:只能调节悬架阻尼5IWT- project with T
3、enneco/Monroe Development of robust controller for active suspension of quarter car linear model uncertainty modeling, H- infinity design乘乘用车主动、半主动悬架用车主动、半主动悬架的的控制控制6乘乘用车主动、半主动悬架用车主动、半主动悬架的的控制控制7Control of active and semi- active suspension systems for passenger cars8Control of active and semi- acti
4、ve suspension systems for passenger carsSome measured FRFs and fitted models 9Control of active and semi- active suspension systems for passenger carsEstimated uncertainty10Control of active and semi- active suspension systems for passenger carsResults: PDF of body acceleration and tire force, for:
5、passive suspension (blue), constant settings of active suspension (red), and robustly controlled active suspension (green)11Control of active and semi- active suspension systems for passenger carsRobust ControlNo ControlActive Motion StabilityActive suspensionGoal : To increase the stability of Tran
6、sport through controlStrategy of Control: to minimalize the movement of the centre of gravity through active suspensipon; Active Break SystemActive Motion StabilityResultsMotion stabilityLeaning ControlActive Motion StabilityActive SuspensionHardware- in- loopResultGoal: Passenger Comfort and motion stability