混合动力汽车CAN网络通信协议的应用研究  

A Study on the Application of the Controller Area Network Communication Protocol to Hybrid Electric Vehicle

作　　者：韩江洪[1,2] 刘征宇[1,3] 崔世辉[3] 张本宏[1,2] 张利[3,2] 

机构地区：[1]合肥工业大学计算机与信息学院,合肥230009 [2]安全关键工业测控技术教育部工程研究中心,合肥230009 [3]合肥工业大学机械与汽车工程学院,合肥230009

出　　处：《汽车工程》2011年第12期1062-1066,1072,共6页Automotive Engineering

基　　金：国家自然科学基金项目(60873003);国家电子信息产业发展基金项目[2010]301;高等学校博士学科点专项科研基金项目(20070359028);广东省教育部产学研结合项目(N2008B090500226)资助

摘　　要：针对混合动力汽车动力系统通信需求和控制策略,提出了基于CAN总线的控制系统拓扑结构,开发了该系统的CAN总线通信协议;研究了协议中优先级分配、单帧与多帧标识、数据长度与帧编号确定和重要报文应答机制等。应用CANoe软件对3种情况下的网络总线负载率进行仿真对比并通过RMA方法对网络实时性能进行测试。结果表明,该系统网络负载低,通信实时性好,能满足控制需求。In view of the communication requirements and control strategy of hybrid electric vehicle,a topology of control system based on CAN bus is proposed,a CAN communication protocol for the system is developed,and several issues in protocol including the allocation of priority,the identification of single and multi-frames,the confirmation of data length and frame number and the response mechanism for important messages are studied.The bus load rate in three different situations are compared by simulation with CANoe and the real-time performance of CAN is tested by rate monotonic analysis method.The results show that the system has a low bus load and good communication realtimeness,well meeting control requirements.

关 键 词：通信协议 拓扑结构 总线负载率 实时性 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]