| 具有优先级消息的AFDX建模与性能分析 |
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| 引用本文： | 李杜娟,张建东,王文豪,刘斌,付中培.具有优先级消息的AFDX建模与性能分析[J].火力与指挥控制,2012,37(6):72-76. |
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| 作者姓名： | 李杜娟 张建东 王文豪 刘斌 付中培 |
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| 作者单位： | 1. 西北工业大学电子信息学院,西安,710129
2. 西北工业大学电子信息学院,西安710129;解放军91765部队,浙江温州 325012 |
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| 基金项目： | 中国航空科学基金资助项目 |
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| 摘 要： | 以Petri网为工具,建立了基于具有优先级消息传输的AFDX(航空电子全双工以太网)网络模型,通过仿真,求解出消息发送时的平均等待时间,得到的指标结果验证了高优先级数据消息帧发送等待延时明显小于低优先级数据消息帧的发送等待延时,充分说明了优先级对紧急数据传输的重要性。模型有助于进一步理解航电系统不同优先级消息在AFDX网络中的传输机制,为以AFDX为总线的综合航电系统的设计和完善提供重要的理论依据。
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| 关 键 词： | AFDX网络 Petri网 优先级 系统建模 性能分析 |
Modelling and Performance Analysis of AFDX Messages with Priority |
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| LI Du-juan
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ZHANG Jian-dong
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WANG Wen-hao
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LIU Bin
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FU Zhong-pei.Modelling and Performance Analysis of AFDX Messages with Priority[J].Fire Control & Command Control,2012,37(6):72-76. |
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| Authors: | LI Du-juan ZHANG Jian-dong WANG Wen-hao LIU Bin FU Zhong-pei |
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| Institution: | 1,2(1.School of Electronics and Information,Northwestern Polytechnical University,Xi’an 710129,China,2.Unit 91765 of PLA,Wenzhou 325012,China) |
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| Abstract: | By using the Petri Nets as the tool,the paper establishes the Petri Net(PN) model of AFDX network(Avionics Full Duplex Ethernet) which is based on priority messages transmission.After simulation and solution of the Petri Net model,is provided a performance index-average waiting-time in the sending process of messages with different priorities.The obtained results verifies the average waiting-time of high priority data frame is much shorter than the low priority to send a message.The analysis of the performance fully shows the priority importance of the emergency data with which has very high real-time requirements in the harsh environment for avionics.It helps to further understanding of the messages with different priorities transmission mechanism of AFDX network by the PN model.The important theoretical basis for design and improve avionics system in which uses the AFDX is Provided. |
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| Keywords: | AFDX network Petri net priority system modeling performance analysis |
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