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纯电动汽车电控调速系统设计毕业论文.doc

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纯电动汽车电控调速系统设计毕业论文.doc

届本科毕业论文(设计)论文题目纯电动汽车电控调速系统设计学生姓名所在院系所学专业应用电子技术教育指导老师完成时间摘要本论文以纯电动汽车直流无刷电机控制器为研究目的,详细地叙述了基于STC12C5404AD型单片机控制的PWM调速控制系统的设计过程。在论文中简单介绍了单片机STC12C5404AD的结构以及IGBT功率驱动模块的应用无刷直流电机的霍尔信号与逻辑驱动信号的关系,利用此关系来控制电机的转动和方向另外,本论文中对电机的一些保护功能如限流保护、欠压保护、短路保护都是利用模块的自带功能来实现的,而刹车断电、智能巡航、自动定速、防飞车、防盗等保护功能是利用程序来实现,这样使电路简单,成本降低。除此之外,还设计了系统的软件流程,包括主程序流程设计,调速子程序流程设计。关键词纯电动汽车STC12C5404ADIGBT功率模块PWM控制ThepureelectricvehiclesspeedelectroniccontrolsystemdesignAbstractThisarticletakedevelopmentsthepureelectricautomobileconcurrentnottobrushtheelectricalmachinerycontrollerastheresearchgoal,narratedindetailhascontrolledthepureelectricautomobilesPWMvelocitymodulationcontrolsystemsdesignprocessbasedontheSTC12C5404ADmonolithicintegratedcircuit.ThepresentpaperintroducedthemonolithicintegratedcircuitSTC12C5404ADstructureaswellastheIGBTpoweractuationmoduleapplicationindetailIntroducednotbrushesdirectcurrentmachinesHallsignalandlogicdrivingsignalrelations,usesthisrelationstocontrolelectricalmachinerysrotationandthedirectionMoreover,inthepresentpapertoelectricalmachineryssomeprotectionfunctionlikecurrentlimitingprotection,theundervoltageprotection,theshortcircuitprotectionisrealizesusingthemodulebringingfunction,butgetsonthebrakesthepowerfailure,theintelligentcruise,theautomaticconstantspeed,againstspeedingcar,securityandsoonprotectionfunctionsisrealizesusingtheprocedure,likethismakestheelectriccircuittobesimple,costreduction.Inaddition,butalsohasdesignedsystemssoftwareflow,includingmasterroutineflowdesign,velocitymodulationsubroutineflowdesign.KeywordsthepureelectricautomobileSTC12C5404ADIGBTpowermodule,PWMcontrols目录1引言............................................................................................................................12设计方案.....................................................................................................................12.1电机的选择..........................................................................................................12.2控制器的选择......................................................................................................22.3PWM调制方式....................................................................................................23系统结构框图.............................................................................................................34单片机外围器件的设计............................................................................................44.1电源电路..............................................................................................................44.2单片机主控制电路..............................................................................................44.2.1SoC型单片机STC12C5404AD...................................................................54.2.2ISP电路.........................................................................................................64.2.3IGBT驱动模块.............................................................................................74.3调速器输入电路..................................................................................................74.4控制模拟器..........................................................................................................84.5换相逻辑接口......................................................................................................94.6IGBT驱动电路..................................................................................................104.7无刷电机驱动电路............................................................................................114.8防盗报警............................................................................................................124.9保护电路............................................................................................................135软件设计与分析.......................................................................................................135.1主程序流程图....................................................................................................135.2PWM频率..........................................................................................................135.3子程序流程图....................................................................................................135.3.1模拟控制键子程序.....................................................................................155.3.2正反转子程序.............................................................................................165.3.3A/D转换子程序..........................................................................................166结束语......................................................................................................................16谢辞..............................................................................................................................18参考文献......................................................................................................................19附图1整体电路图...................................................................................................20程序清单...............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