| 改进型UDP组播的性能分析及其在实时电源控制系统中的应用 |
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| 引用本文： | 陈海春,傅鹏,程敏.改进型UDP组播的性能分析及其在实时电源控制系统中的应用[J].计算机工程与应用,2004,40(20):201-204. |
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| 作者姓名： | 陈海春 傅鹏 程敏 |
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| 作者单位： | 合肥中国科学院等离子体物理研究所二室,合肥,230031 |
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| 基金项目： | 国家发展计划委员会“投资(1998)1303号项目”(子项目) |
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| 摘 要： | 文章通过采用带连接的UDP、I/O复用技术、关闭UDP校验和功能、负载均衡等技术对普通的UDP组播技术进行改进,使之在每个控制周期(1ms)内满足了分布式实时控制系统的实时性和可靠性要求。在将改进型的UDP组播技术应用于实际控制系统之前,文中构建了一个模拟局域网进行测试,对比结果表明改进后的组播技术无论在数据包延迟、丢包率等方面较改进前的UDP组播性能有较大幅度的提高。
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| 关 键 词： | UDP组播 QNX 分布式实时控制系统 |
| 文章编号： | 1002-8331-(2004)20-0201-04 |
Performance Analysis of the Modified UDP Multicast Technology and Which Apply to Realtime Control System for a Power Supply |
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| Chen Haichun Fu Peng Cheng Min.Performance Analysis of the Modified UDP Multicast Technology and Which Apply to Realtime Control System for a Power Supply[J].Computer Engineering and Applications,2004,40(20):201-204. |
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| Authors: | Chen Haichun Fu Peng Cheng Min |
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| Abstract: | This paper discusses a modified UDP(User Datagram Protocol)multicast technology via connected UDP,I /O multiplex technology,and closes the check-sum function in UDP header,etc.This modified UDP multicast is perfectly satisfy the special requirement of the Poloidal Field Power Supply in every control cycle-1ms.However,before apply this technology into the real system built a simulation LAN for proving its performance,as the result,the optimized UDP multicast is more better than the original UDP multicast not only in the packages delay,but the percentage of packages lost. |
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| Keywords: | UDP multicast QNX distributed and realtime control system |
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