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1、摘要SHANDONGUNIVERSITY?。希啤。裕牛茫龋危希蹋希牵佼厴I(yè)設(shè)計(jì)說明書汽車側(cè)滑位移測量系統(tǒng)設(shè)計(jì)學(xué)院:電氣與電子工程學(xué)院專業(yè):自動(dòng)化學(xué)生姓名:陳紹友學(xué)號(hào):0812102147指導(dǎo)教師:孟天星2012年6月IV摘要摘要為使汽車具備轉(zhuǎn)向輕便、準(zhǔn)確和行使穩(wěn)定等性能,在汽車設(shè)計(jì)制造過程中,在轉(zhuǎn)向輪上設(shè)計(jì)了專項(xiàng)定位參數(shù),但在汽車使用過程中,由于車架、轉(zhuǎn)向機(jī)構(gòu)的變形與磨損,很容易造成以上定位參數(shù)失準(zhǔn),導(dǎo)致行車中轉(zhuǎn)向車輪向前滾動(dòng)的同時(shí)產(chǎn)生滑移,即車輪側(cè)滑。而車輪側(cè)滑會(huì)造成滾動(dòng)阻力增加、行駛方向穩(wěn)定性變差、輪胎磨損加劇、運(yùn)行油耗增加以及轉(zhuǎn)向沉重等問題,進(jìn)而影響汽
2、車的使用性能和經(jīng)濟(jì)性能,也比較容易造成行車事故。為了防止定位參數(shù)變形過量,保障車輛行駛安全,國家相關(guān)標(biāo)準(zhǔn)規(guī)定:車輪側(cè)滑量應(yīng)小于或等于5m/km。所以,定期對(duì)汽車轉(zhuǎn)向輪側(cè)滑量進(jìn)行檢測,發(fā)現(xiàn)問題并及時(shí)排查,對(duì)汽車的使用性能、經(jīng)濟(jì)性能及駕駛員和行人的人身和財(cái)產(chǎn)安全都是具有重要意義的。本設(shè)計(jì)的核心是MCS—51單片機(jī),其配有少量外圍電路,集自動(dòng)檢測、判別、報(bào)警及數(shù)顯于一體,具有精度高、速度快、體積小、造價(jià)低、穩(wěn)定可靠等特點(diǎn),因此具有一定的可行性和現(xiàn)實(shí)意義。關(guān)鍵詞:側(cè)滑;位移傳感器;單片機(jī);動(dòng)態(tài)檢測;串行通信IVAbstractAbstract DesignofC
3、arskiddingmeasurementsystemAbstractInautomotivedesign,inordertomakeittothelight,accurateandstableperformanceofthesteeringwheelonthedesignparametersofthespecialpositioning,butintheprocessoftheuseofmotorvehiclestrailersbecausetothedeformationandwear,thatis,thewheelsspin.Wheelspinwil
4、lcauserollingresistanceincreasedonthedirectionofstabilitydeteriorate,tirewearintensified,runningaheavyfuelconsumptiontoincrease,andsuchphenomena,theimpactoftheuseofvehicleperformanceandeconomicperformance,andlikelytocausetrafficaccidents.Inordertopreventexcessivedeformationpositio
5、ningparameters,trafficsafetyprotection,nationalstandardsrequirethatthespinofthewheelshouldbelessthanorequalto5m/km.Therefore,regularcartospinroundoftesting,investigationandfoundproblemsinatimelyfashion,thecar'sperformanceandeconomicperformanceisofgreatsignificance. Carskiddingtes
6、t-bedfortheapplicationofconditions,intelligentinstrumentstodetecttheexpectedfunctionsandthemaintechnicalindicators.Designanewspindetectionsystem,andgivesitsworkingprinciples,hardwareandsystemsoftwarede-sign.ThroughtheinputandoutputcircuitandposetheSCMsystem,Measurementsystemcanals
7、obemeasuredthroughtheserialporttosendtheresultstothetopoftheplane. ThispaperdescribesthedigitalspintoMCS-51microcontrollerasthecore,withasmallamountofexternalcircuit,setautomaticdetection,discrimination,andanumberofsignificantalarminone,withhighprecision,speed,smallsize,lowcost,S
8、tableandreliablecharacteristics.