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控制器局域网(CAN)的建模与仿真不仅能对CAN总线性能进行评估,而且能优化CAN总线网络的设计。在研究分析CAN总线通信控制协议的基础上,采用OPNET网络仿真工具,运用网络层次化建模方法,建立CAN总线通信网络模型。通过该仿真模型,分析了CAN总线网络中CAN节点优先级、传输速率、帧信息量以及填充位等因素对CAN总线网络实时性的影响,从而为CAN总线网络的设计与优化提供理论参考。
Controller Area Network (CAN) modeling and simulation can not only evaluate the CAN bus performance, but also optimize the CAN bus network design. On the basis of researching and analyzing CAN bus communication control protocol, adopting OPNET network simulation tools and using network hierarchical modeling method to establish CAN bus communication network model. Through the simulation model, this paper analyzes the CAN bus network CAN node priority, transmission rate, the amount of frame information and filling bits and other factors on the CAN bus network real-time, so as to CAN bus network design and optimization provide a theoretical reference.