一种多功能车辆总线周期扫描表优化设计方案  

An Optimization Solution of the MVB Periodic Polling Table

作　　者：李锐[1] 李永宗 费巧玲[1] 蔡海翔 

机构地区：[1]株洲南车时代电气股份有限公司技术中心,湖南株洲412001 [2]铁道部驻株洲机车验收室,湖南株洲412001

出　　处：《机车电传动》2013年第4期92-94,共3页Electric Drive for Locomotives

摘　　要：介绍了多功能车辆总线有关介质分配的基本概念,分析了按照IEC 61375-1标准定义的基本规则所构造的周期扫描表存在的缺陷。提出了一种将数据量最大的端口数据安排在当前网络负荷最小的基本周期发送的周期扫描表优化设计方案,采用该方案生成的周期扫描表中的周期变量分布均匀,各个基本周期内网络负荷基本均衡,从而实现MVB网络实时调度的性能优化。Based on definitions of the MVB medium allocation,shortages of the periodic polling table constructed by the IEC 61375-1 standards were discussed.Optimization solution of MVB periodic polling table was formed,which allocated the maximal size port in the minimum net load basic period.Application of the algorithm and related way of scheduler analysis were expounded by the example of MVB periodic traffic,which proved that the above-mentioned solution could optimize the MVB period polling table efficiently.

关 键 词：多功能车辆总线 周期数据 周期扫描表 网络负荷 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]