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首页> 外文期刊>IEEE transactions on industrial informatics >Reliability Enhancement of Redundancy Management in AFDX Networks
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Reliability Enhancement of Redundancy Management in AFDX Networks

机译：AFDX网络中冗余管理的可靠性增强

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摘要

Avionics Full Duplex Switched Ethernet is a safety critical network in which a redundancy management mechanism is employed to enhance the reliability of the network. However, as stated in the ARINC664-P7 standard, there still exists a potential problem, which may fail redundant transmissions due to sequence inversion in the redundant channels. In this paper, we explore this phenomenon and provide its mathematical analysis. It is revealed that the variable jitter and the transmission latency difference between two successive frames are the two main sources of sequence inversion. Thus, two methods are proposed and investigated to mitigate the effects of jitter pessimism, which can eliminate the potential risk. A case study is carried out and the obtained results confirm the validity and applicability of the developed approaches.
机译：航空电子全双工交换式以太网是一种安全关键网络，其中采用了冗余管理机制来增强网络的可靠性。但是，如ARINC664-P7标准中所述，仍然存在潜在的问题，由于冗余通道中的序列反转，可能导致冗余传输失败。在本文中，我们探索了这种现象并提供了其数学分析。揭示了可变抖动和两个连续帧之间的传输等待时间差是序列反转的两个主要来源。因此，提出并研究了两种方法来减轻抖动悲观情绪的影响，从而消除潜在的风险。进行了案例研究，获得的结果证实了所开发方法的有效性和适用性。

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