电子动力转向系统大学毕业论文外文文献翻译及原文

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1、毕业设计（论文）外文文献翻译文献、资料中文题目：电子动力转向系统文献、资料英文题目：文献、资料来源：文献、资料发表（出版）曰期：院（部）：专业：班级：姓名：学号：指导教师：翻译曰期2017.02.141英文文献翻译1.1ElectronicpowersteeringsystemWhatitis：Electricallypoweredsteeringusesanelectricmotortodriveeitherthepowersteeringhydraulicpumporthesteeringlinkagedirectly.Thepowersteeringfunctionist

2、hereforeindependentofenginespeed,resultinginsignificantenergysavings.Howitworks:Conventionalpowersteeringsystemsuseanengineaccessorybelttodrivethepump,providingpressurizedfluidthatoperatesapistoninthepowersteeringgearoractuatortoassistthedriver.Inelectro-hydraulicsteering,oneelectricallypowe

3、redsteeringconceptusesahighefficiencypumpdrivenbyanelectricmotor.Pumpspeedisregulatedbyanelectriccontrollertovarypumppressureandflow,providingsteeringeffortstailoredfordifferentdrivingsituations.Thepumpcanberunatlowspeedorshutofftoprovideenergysavingsduringstraightaheaddriving(whichismostoft

4、hetimeinmostworldmarkets).Directelectricsteeringusesanelectricmotorattachedtothesteeringrackviaagearmechanism(nopumporfluid).Avarietyofmotortypesandgeardrivesispossible.Amicroprocessorcontrolssteeringdynamicsanddrivereffort.Inputsincludevehiclespeedandsteering,wheeltorque,angularpositionandt

5、urningrate.WorkingInDetail:A"steeringsensor’’islocatedontheinputshaftwhereitentersthegearboxhousing.Thesteeringsensorisactuallytwosensorsinone:a/ztorquesensor〃thatconvertssteeringtorqueinputanditsdirectionintovoltagesignals,anda’’rotationsensor"thatconvertstherotationspeedanddirectionintovol

6、tagesignals-An"interface"circuitthatsharesthesamehousingconvertsthesignalsfromthetorquesensorandrotationsensorintosignalsthecontrolelectronicscanprocess-Inputsfromthesteeringsensoraredigestedbyamicroprocessorcontrolunitthatalsomonitorsinputfromthevehicle’sspeedsensor.Thesensorinputsarethenco

7、mparedtodeterminehowmuchpowerassistisrequiredaccordingtoapreprogrammed’’forcemap”inthecontrolunit’smemory.Thecontrolunitthensendsouttheappropriatecommandtothe"powerunit"whichthensuppliestheelectricmotorwithcurrent.Themotorpushestheracktotherightor1