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1、廣東工業(yè)大學(xué)華立學(xué)院本科畢業(yè)設(shè)計(論文)基于MC9S12XS128單片機(jī)的智能小車設(shè)計論文題目基于MC9S12XS128單片機(jī)的智能小車設(shè)計系部機(jī)械電氣學(xué)部專業(yè)自動化班級09自動化1班學(xué)號學(xué)生姓名指導(dǎo)教師二0—三年五月摘要木文以第六屆飛思卡爾杯智能汽車競賽為背景詳細(xì)介紹了智能小車系統(tǒng)的軟破件結(jié)構(gòu)和開發(fā)流程。采用1:10的仿真車模,以0思卡爾半導(dǎo)體公司生產(chǎn)的16位單片機(jī)MC9S12XS128為核心控制器,在CodeWarriorIDE開發(fā)環(huán)境中進(jìn)行軟件開發(fā),使賽車在跑道上沿著黑線以最快的速度行駛。論文介紹了總體方案設(shè)計、機(jī)械結(jié)構(gòu)設(shè)計、駛件電路設(shè)計、軟件設(shè)計、無線通信子系統(tǒng)設(shè)計、上位機(jī)監(jiān)控子系
2、統(tǒng)設(shè)計以及系統(tǒng)的調(diào)試與分析。機(jī)械結(jié)構(gòu)設(shè)計部分主要介紹了對車模的改進(jìn)和三舵機(jī)隨動系統(tǒng)的機(jī)械結(jié)構(gòu)。硬件電路設(shè)計部分主要介紹了智能小車系統(tǒng)的硬件電路設(shè)計原理,包括原理圖和PCB設(shè)計。軟件設(shè)計方面,主要介紹了三隨動舵機(jī)的控制原理和電機(jī)的PID控制策略。無線通信子系統(tǒng)設(shè)計則以nRF24L01的介紹和應(yīng)用為主,闡述了無線技術(shù)在智能小車系統(tǒng)中的應(yīng)用思路。在制作小車的過程中,通過不斷的測試調(diào)整了車模輪胎的幷度,經(jīng)過調(diào)整以后,小車能更好地適應(yīng)直線和彎道;舵機(jī)采用了調(diào)轉(zhuǎn)放置的方式,減小了力臂,能更加靈活、快速的轉(zhuǎn)動。軟件方面采用了PII)控制算法,控制更加地靈活簡單,最主要的是小車尋軌跡更加地穩(wěn)定、精確。最終
3、本設(shè)計能夠適應(yīng)各種賽道,直道速度能達(dá)到3.5m/s,平均速度接近2.9m/So關(guān)鍵詞:智能小車,激光傳感器,MC9S12XS128,上位機(jī),PIDABSTRACTThispaperintroducesthehardwareandsoftwarestructureofsmartcarsystemanddevelopmentprocessinthesixthFreescalecupcompetitionforintelligentvehicle.Using1:10simulationmodels,withFreescaleSemiconductorcompany's16-bitMCUMC9S1
4、2XS128asthecore,dothesoftwaredevelopmentintheCodeWarriorIDEdevelopmentenvironmentandmakecarontheblacklinewiththefastestspeed.Thispaperintroducestheoveralldesign,mechanicaldesign,hardwaredesign,softwaredesign,wirelesscommunicationsubsystemdesign,hostcomputermonitoringsubsystemdesignandsystemdebugan
5、danalysis.Mechanicaldesignshowstheimprovementofthecarmodels,aswellasmechanicalstructuresofthethreeservosystem.Thesectionofhardwaredesignintroducestheprincipleofhardwarecircuit,includingschematicandPCBdesign.Forthesoftwaredesign,itintroducesthetheoryofthree-servocontrolandthestrategyofPIDcontrol.Th
6、esectionofwirelesscommunicationsubsystemdesignmainlydescribedtheapplicationofwirelesstechnologiesinthesmartcarsystem,basedontheintroductionofpropertyandtheapplicationofthenRF24L01.Intheprocessofmakingthecar,adjustthetire'sangleofthemodelsthroughaseriesoftests.Afteradjustment,thecarcanbetteradaptto
7、straightlinesandcorner,steeringgearusedjerkedplacedway,reducedthebehavior,canbemoreflexible,rapidrotation.SoftwareadoptedPIDcontrolalgorithm,controltomoreandmoreflexiblesimple,themostisthecarcanfindmorestabletraj