针对CAN总线系统,定义了数据传输效率,分析了影响CAN网络数据传输效率的主要因素;通过计算比较,总结出3种可以有效提高CAN网络数据传输效率的方法,将它们结合起来,形成可有效利用CAN网络传输资源的CAN总线网络数据传输效率综合优化法。以典型车身CAN网络控制系统为例,运用该综合优化法进行了改进设计。结果表明利用该设计方法可以明显提高车身CAN网络的数据传输效率。
A definition of data transmission efficiency is given for CAN bus system, and the main factors affecting the data transmission efficiency in CAN network are analyzed. Through calculation and comparison, three methods to improve the data- transmission efficiency in CAN network are summed up. They are then combined to form a comprehensive optimization scheme for data transmission efficiency in CAN network, which can effectively utilize the transmission resource of CAN network. By using the comprehensive optimization scheme, an improvement design is conducted on the control system of a typical car body CAN network as an example. The results show that using the design method can markedly raise the data transmission efficiency in car body CAN network.