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Active delay variation control for improving fault tolerance in an avionics network

机译:用于提高航空电子网络中容错的主动延迟变化控制

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Avionics Full DupleX Switched Ethernet (AFDX) is a promising technique that can replace the existing avionics data buses, such as ARINC429 and MIL-STD-1553B. However, when the time interval between the reception of the original frame and its duplicate copy is too large, the redundancy management strategy may fail in some worst case scenarios. In this paper, an active delay variation control algorithm, AVC, is proposed to improve fault tolerance in an avionics network. Meanwhile, a novel local deadline assignment principle based on traffic load is presented. Compared with traditional mechanisms, AVC significantly decreases the delay difference between two redundant frames and improves the system reliability.
机译:AviONICS全双工交换以太网(AFDX)是一种有希望的技术,可以取代现有的航空电子数据总线,如ARINC429和MIL-STD-1553B。但是,当原始帧的接收和其重复拷贝之间的时间间隔太大时,冗余管理策略可能会在一些最坏的情况下失败。本文提出了一种有源延迟变化控制算法,AVC,以提高航空电子网络中的容错。同时,介绍了基于交通负荷的新型本地截止日期分配原理。与传统机制相比,AVC显着降低了两个冗余帧之间的延迟差,并提高了系统可靠性。

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