| 350km/h动车组TCN网络周期轮询优化算法研究 |
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| 引用本文： | 郭超勇,刘建强,郑琼林. 350km/h动车组TCN网络周期轮询优化算法研究[J]. 铁道学报, 2011, 0(12) |
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| 作者姓名： | 郭超勇 刘建强 郑琼林 |
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| 作者单位： | 北京交通大学电气工程学院; |
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| 基金项目： | 国家高技术研究发展计划(863计划)(2009AA110303) |
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| 摘 要： | CRH3型高速动车组周期轮询策略存在总线负载利用率不均匀、周期负载占用带宽相差较大的不足。针对此不足,对高速动车组网络控制系统周期数据的数学模型进行推导,提出一种用于350km/h动车组的周期轮询优化算法。根据MVB轮询周期表的特点,在求解过程中增加层次性的约束条件,以局部目标函数代替全局目标函数,提高了算法的运行效率。对单调速率算法、遗传算法和多约束条件均匀度优先算法的关系进行论证,表明此优化算法在多约束条件下具有极大优势。对优化算法进行可调度性分析,验证了周期轮询表优化结果的有效性。仿真结果进一步证实此优化算法实现了负载信息均匀度最优。
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| 关 键 词： | 高速动车组 周期轮询 实时调度 MVB 可调度性分析 |
Research on the TCN Network Periodic Polling Optimization Algorithm for the 350 km/h Electrical Multiple Units |
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| GUO Chao-yong,LIU Jian-qiang,ZHENG Qiong-lin. Research on the TCN Network Periodic Polling Optimization Algorithm for the 350 km/h Electrical Multiple Units[J]. Journal of the China railway Society, 2011, 0(12) |
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| Authors: | GUO Chao-yong LIU Jian-qiang ZHENG Qiong-lin |
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| Affiliation: | GUO Chao-yong,LIU Jian-qiang,ZHENG Qiong-lin(School of Electrical Engineering,Beijing Jiaotong University,Beijing 100044,China) |
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| Abstract: | The uneven bus-load utilization and large load-bandwidth difference of basic periods exist in the periodic polling policy of CRH3 high-speed EMUs.In view of this lack,the mathematical model of periodic data of the high-speed EMUs network control system is derived and a new periodic polling optimization algorithm is proposed.According to the characteristics of the MVB polling periodic table,some hierarchical constraints are added and the local objective function takes place of the global objective function i... |
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| Keywords: | high-speed electrical multiple units(EMU) periodic polling real-time scheduling MVB schedulability analysis |
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