【摘要】 研究了CAN总线在CVT控制系统中应用。针对目前比较流行的高层协议如CANopen、DeviceNet、SAEJ1939、SDS等,用于节点较少的CAN网络时会造成不必要的资源浪费的缺点,在分析了TMS320F2812内嵌的eCAN模块的基础上,提出了一种简单、可靠且实用性较高的CAN高层通信协议,并完成了相关的软、硬件设计,实现了CVT控制系统与汽车上其它ECU的数据通信。该通信协议也为汽车CAN网络节点间的通信提供了借鉴。更多还原

【Abstract】 The study of the applications of CAN bus in the CVT controlling system.To avoid the unnecessary waste which may be caused when the popular high-layer protocol,e.g.CANopen、DeviceNet、SAE J1939、SDS applied in CAN network with few knobs,the eCAN module was analyzed,a simple,reliable and practical high-layer CAN communication protocol was developed and the relevant hardware & software was designed.Moreover,the communication between CVT controlling unit and other ECUs was realized.The study of the protocol lays the foundation of the communications between ECUs in car’s CAN network.更多还原