摘要
针对FlexRay网络参数设计问题,定性分析了动态段长度等参数和消息ID分配对网络性能的影响,推导出动态段带宽利用率和消息最坏响应时间计算方法。以消息响应时间为约束,以最大带宽利用率和最小整体响应时间为设计目标,给出了FlexRay动态段长度和帧ID的优化设计模型及求解算法。以CANoe和DaVinci Network Designer为仿真平台进行实验,结果表明,该设计方法能够保证较高的动态段带宽利用率和较小的消息响应时间。
In order to design the parameters of FlexRay network,impacts of several parameters such as the length of the dynamic segment and frame identifier assignment on the network perform-ance of automobile FlexRay were analyzed qualitatively,and calculation methods for the utilization of network bandwidth and the worst case response time of messages were deduced.Under the con-straints of message response time,the optimization design model and algorithm for the length of the dynamic segment and frame ID assignment were given,which aimed at the maximum bandwidth utili-zation and the minimum response time of messages.Experiments made in the simulation platform of CANoe and DaVinci Network Designer show that this design method can improve the dynamic band-width utilization effectively and reduce the dynamic message response time.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2014年第15期2070-2075,共6页
China Mechanical Engineering
基金
国家自然科学基金资助项目(61202096)
中央高校基本科研业务费专项资金资助项目(2013HGCH0014)
教育部留学回国人员科研启动基金资助项目([2013]693)
安徽省自然科学基金资助项目(1208085QF118)
安徽省省级高等学校自然科学研究项目(KJ2012A226)
安徽省科技攻关项目(1101c0603059)
广东省教育部产学研结合项目(2012B091100417)
