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西安航空职业技术学院课程设计论文第1页共23页电控液压助力转向系统的设计研究【摘要】:本论文主要阐述了现代工程车辆技术追求高效节能、高舒适性和高安全性等目标。前一项目标与环境保护密切相关,是当代全球性热门话题,后两项目标是车辆朝着高性能化方向发展必须研究和解决的重要课题。转向系统的高性能化是指其能够根据车辆的运行状况和驾驶员的要求实行多目标控制,以获得良好的转向轻便性、较好的路感和较快的响应性。汽车转向系统是影响汽车操纵稳定性、行驶安全性和驾驶舒适性的关键部分。在追求高效节能、高舒适性和高安全性的今天,电控液压助力转向系统作为一种新的汽车动力转向系统,以其节能、环保、更佳的操纵特性和转向路感,成为动力转向技术研究的焦点。本文通过对电液动力转向系统的组成结构进行了分析,解释了其工作原理。在分析了全液压转向系统的工作原理和液压转向器的结构后,建立了液压转向器的流体动力模型、数学模型。接着利用所建的数学模型对电控液压助力转向系统组成各元件进行特性分析,了解了影响系统性能的一些参数。并通过系统仿真,分析其性能是否满足实际工作中的要求。为了实现系统的转向性能,进行了系统的软硬件设计。最后根据电液动力转向系统结构原理图,搭建了相应的试验装置,同时通过检测系统,完成了性能的检测。本文的研究为电液动力转向系统的设计和性能改善提供了一定的依据。通过系统元件的参数对于系统性能的影响分析有助于我们设计系统时选择更合理的参数;通过仿真分析了所建系统模型的性能,加入了PID控制算法调节,表明所设计的系统能够满足实际转向的要求。关键词：：液压转向；助力器；压力；流量；功率Abstract:Thisthesismainlyelaboratedthemodernengineeringvehiclespursuitofhighefficiencyandenergysaving,hightechnologycomfortandhighsecurityobjectivesetc.Formeratargetandenvironmentalprotection,iscloselyrelatedtothecontemporaryglobalhottopic,aftertwoobjectivesarevehiclesperformance-baseddirectiontowardahighdevelopmentmuststudyandsolveimportantissue.Steeringsystemofhighperformanceistoshowitscanaccordingtotheoperationstatusofvehiclesanddriversforthecontrolofmulti-objectivetoobtaingoodsteeringportability,betterlkfeelingandquickerresponsesex.Automotivesteeringsystemistoinfluencethevehiclesteeringstability,drivingsafetyanddrivingcomfortkeypart.Inthepursuitofhighefficiencyandenergysaving,highcomfortandhighsecuritytoday,electronicallycontrolledhydraulicsteeringsystemasanewcarpowersteeringsystem,西安航空职业技术学院课程设计论文第2页共23页withitsenergy-saving,environmentalprotection,betterhandlingcharacteristicsandsteeringlkfeeling,becomethefocusofpowersteeringtechnologyresearch.Thisarticlethroughtoelectrohydraulicpowersteeringsystemcompositionstructureareanalyzed,explainsitsworkingprinciple.Ontheanalysisofthehydraulicsteeringsystemofhydraulicsteeringtheworkingprincipleandthestructureoftheestablishedhydraulicsteeringgear,thehydrodynamicmodel,themathematicalmodel.Thenusethemodelofelectronicallycontrolledhydraulicsteeringsystemcompositionforeachelementanalysis,understandthecharacteristicsofsomeparametersaffectsystemperformance.Andthroughthesystemsimulation,analyzesitsperformancemeetstherequirementsoftheactualwork.Inordertorealizethesystemtoperformance,thesystemhardwareandsoftwaredesign.Finally,accordingtotheelectrohydraulicpowersteeringsystemstructurediagram,builtthecorrespondingtestdevice,andatthesametimethroughtestingsystem,completedtheperformancetesting.Thisresearchforelectrohydraulicpowersteeringsystemdesignandperformanceimprovementprovidescertainbasis.Throughthesystemcomponentsfortheparametersofthesystemperformanceimpactanalysishelpsustothedesignofthesystemmorereasonableparametersselection;Throughthesimulationanalysisoftheperformanceofthesystemmodelisbuilt,joinedthePIDcontrolalgorithmadjustment,showedthatthedesignedsystemcanmeetthepracticalsteeringrequirements.Keywords:Hydraulicsteering;Booster;Pressure;Flow;power西安航空职业技术学院课程设计论文第3页共23页目录电控液压助力转向系统的设计研究..........................................................................................................11引言..........................................................................................................................................................41.1液压助力转向系统简介...................................................................................................................41.2机械转向系统..................................................................................................................................42液压动力转向系统的介绍.......................................................................................................................62.1动力转向系.......................................................................................................................................62.2液压动力转向..................................................................................................................................72.2液压助力转向系统的工作原理.......................................................................................................82.3液压回路设计工作原理.................................................................................................................103硬件选取................................................................................................................................................123.1扭矩传感器....................................................................................................................................123.2电液比例阀....................................................................................................................................134电子转向控制单元................................................................................................................................144.1电子控制单元的组成及原理........................................................................................................144.1.1ECU.........................................................................................................................................144.1.2分流阀....