摘    要
针对全球气候的逐步恶化、城市大气污染加剧以及石油资源过度消耗，许多国家都正在积极开发节能型、环保型汽车。混合动力车辆已成为汽车技术研究的热点，而总线通讯技术和分布式控制网络也在汽车电子领域广泛应用。混合动力汽车是传统燃油汽车和纯电动汽车两相结合的新车型，具有低污染和低油耗的特点，是当前解决节能问题、环保问题的切实可行的过渡方案。
为实现混合动力车辆能量管理和运动控制，基于DSP单片机和CAN总线技术实现混合动力汽车整车能量控制器的设计，包括电源管理模块、DSP外围配置电路、CAN接口电路、SCI串口通信电路、LCD显示电路、数据采集电路。DSP接收由数据采集单元采集来的车辆实时运行信息，如：加速踏板位置、刹车踏板位置、车速等信息，进行计算，求出车辆运行需要的发动机转矩、ISG驱动电机转矩，并通过CAN总线以电信号的形式将输出传输到各个控制单元以实现整车的实时控制。
相对传统内燃机汽车，本控制器取消了发动机怠速；提高了发动机平均负荷率；实现了制动能量回收。优化了车辆的经济性。在车辆需要频繁加减速和怠速起停的城市循环工况下，节能效
果更加明显。
关键词：CAN总线，DPS，混合动力汽车，整车能量控制

The Power Control System Of Hybrid Electric Vehicle
Abstract
With the deterioration of the global climate and the excessive consume of the oil resources,developing energy-efficient automobiles becomes an important direction in the automobile industry.Hybrid electric vehicle has become hot-spot in automotive engineering,and bus communication and distributed control network are widely used in automotive electronics.Hybrid electric vehicle employing two power souces-neternal combustion engine and electric motor,has been accepted world-widely as one of the most promising methods to solve these two problems.
To realize energy management and kinetic control of HEV,according to DSP and CAN com
munication carry out the the vehicle power control module ,including the power management module,DSP module,CAN communication module, SCI communication module and LCD module.DSP receives the data that collected of the vehicle that the unit collects by the data to go an information, such as:Accelerate pedal position and braking pedal position,speed information, carry on a calculation, beg the motor that a vehicle circulates a demand to turn and ISG to drive electrical engineering to turn,and pass the CAN communication delivers the exportation to each control unit by the form of telecommunication with carry out the vehicle power control module.
Opposite traditional internal combustion engine car, this controller canceled motor Dai soon;Raised a motor the burden rate is on the average;Carried out to make an amount of kinetic energy recall.It was excellent to turn the economy of the vehicle.Economize on energy effect Under circulating work condition in the city that needs to be multifarious to add and subtract soon to soon rise to stop in the vehicle,it's getting more obvious.
Key words：CAN bus，DSP，Hybrid electric vehicle，the vehicle power control module
目  录
第一章 绪论    1
1.1本课题的背景、目的和意义    1
1.2混合动力汽车国内外发展现状    3
1.3混合动力汽车的分类    6
1.4混合动力汽车的特点及比较    9
1.4.1串联式混合动力汽车的特点    9
1.4.2并联式混合动力汽车的特点    10
1.4.3混联式混合动力汽车的特点    10
1.5论文的研究内容    11
第二章 方案论证    12
2.1 ISG型HEV的工作原理    12
2.2控制器CPU的选择    12
2.3 CAN总线的在混合动力汽车上的运用    13
2.4动力总成控制系统的结构分析和选择    15
2.5系统硬件总体框图    15
2.6稳压芯片的选择    16
2.7 RS-232收发器接口芯片    17
2.8 CAN收发器    17
2.9 ISG型混合动力汽车动力传动系统布置方案和整车控制策略    17
第三章 HEV动力总成硬件系统设计    20
3.1系统的硬件需求分析    20
3.2功能模块划分    20
3.3 TMS320F2812的介绍    20
3.4 DSP最小系统及相关电路    22
3.4.1供电电路    22
3.4.2复位电路    23
3.4.3时钟振荡电路    23
3.4.4 JTAG接口电路    23
3.4.5 SCI串口通讯电路    24
3.4.6 AD转换电路    24
3.4.6 CAN通讯接口电路    25
3.5 LED灯与按键电路    26
3.6 LCD液晶驱动电路    27
3.7油门/制动踏板位置信号采集电路    27
3.8车速采集电路    28
3.9发动机转速采集电路    29
第四章 HEV动力总成软件系统设计    30
4.1软件系统总体设计    30
4.1.1能量控制算法    31
汽车节能
4.1.2主程序流程图    32
4.2 AD转换模块    34
4.3显示模块    35
第五章 结论    36
5.1总结    36
5.2展望    36
参考文献    38
致  谢    40
附录1：程序清单    41
附录2：硬件连接图    51