计算机与现代化

• 算法设计与分析 • 上一篇    下一篇

FlexRay动态段消息调度优化算法

  

  1. (1.贵州师范大学物理与电子科学学院,贵州贵阳550025;2.贵州大学大数据与信息工程学院,贵州贵阳550025)
  • 收稿日期:2017-10-25 出版日期:2018-06-13 发布日期:2018-06-13
  • 作者简介:张良玉(1991-),男,安徽亳州人,贵州师范大学物理与电子科学学院硕士研究生,研究方向:汽车总线,智能控制; 通信作者:王义(1957-),男,教授,研究方向:计算机网络控制系统,嵌入式系统设计,现代汽车电子技术。
  • 基金资助:
     国家自然科学基金资助项目(61462015); 贵州省国际科技合作计划资助项目(黔科合外G字[2014]7007号)

Message Scheduling Optimization Algorithm of FlexRay Dynamic Segment

  1. (1. College of Physics and Electronics Science, Guizhou Normal University, Guiyang 550025, China;
      2. College of Big Data & Information Engineering, Guizhou University, Guiyang 550025, China)
  • Received:2017-10-25 Online:2018-06-13 Published:2018-06-13

摘要: 研究FlexRay网络动态段,对汽车的安全、稳定、可靠运行很重要。目前针对FlexRay动态段,设计兼顾最坏响应时间与总线利用率的调度算法相对较少。针对现有研究的不足,本文提出一种类DM算法的启发式调度算法,以减少消息最坏响应时间与提高总线利用率的综合效率为目标,找出最佳的FID分配方案。通过Matlab仿真验证,结果表明该优化调度算法的有效性。

关键词: FlexRay总线, 动态段, 调度算法, 数学模型

Abstract:  It is very important to study the dynamic segment of FlexRay network for the safe, stable and reliable operation of the automobile. At present, for the dynamic segment of FlexRay, the scheduling algorithm of paying special attention to the worst response time and bus utilization ratio is relatively few. Aiming at the shortcomings of the existing research, this paper puts forward a kind of heuristic scheduling algorithm similiar to DM algorithm, in order to reduce the message worst-case response time and improve the utilization ratio of bus comprehensive efficiency, to find the best FID scheme. Through Matlab simulation, the results show that the optimal scheduling algorithm is effective.

Key words: FlexRay bus, dynamic segment, scheduling algorithm, mathematical model

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