整车CAN网络错误帧研究与应用

Research and Application of the Vehicle CAN Network and Check Items

控制器局域网络CAN问世以来,凭借其优良的可靠性、实时性、低成本等优势,成为当下商用车和乘用车包括新能源汽车上最普遍的整车通信方式。为满足各种需求,整车CAN通信网络变得越来越复杂,由此引发的错误帧问题也越来越多,导致工程师不得不花费大量精力解决错误帧问题。文章介绍错误帧的类型、错误帧结构和节点设备错误状态,分析引起错误帧的常见原因,最后结合工作中实际案例,分析产生错误帧的原因,可为解决其它CAN错误帧或通信失败问题提供参考。

Since the advent of CAN,with its excellent reliability,versatility,low cost and other advantages,it has become the most popular vehicle communication mode among commercial vehicles and passenger cars including new energy vehicles.However,in order to meet the various needs,CAN vehicle communication network is becoming more and more complex,resulting lots of error frame problems and causing engineers to spend a lot of energy to solve the error frame problems.In this paper,types and the structure of CAN error frames as well as error states of node devices are introduced and analyzed.Combining with the practical cases in the work,the paper analyses the causes of CAN error frames,which can provide references for CAN error frame and communication failure problems.