多交叉通道模型中瞬时故障的后向恢复

发布时间：2018-01-03 03:19

本文关键词：多交叉通道模型中瞬时故障的后向恢复　出处：《计算机应用》2014年09期 　论文类型：期刊论文

【摘要】：在多交叉通道余度系统中,最大限度恢复个别通道出现的输出错误,是表决结果正确性的前提,也是余度系统中的基本问题。在一个指令周期中,多交叉通道针对任务在时间分配上存在一定冗余,对当前表决面之前时间的冗余进行汇总,并假设之后阶段不出现瞬时故障,进行后期冗余时间的估计;累计这两部分冗余,构造一个较大的时间窗口,利用该窗口,在故障时增加回卷深度,实现瞬时故障的最大恢复。基于上述思想,提出了多通道交叉余度模型中的动态时间序列,针对该序列,进行时间回卷深度分析,由此设计了支持后向恢复的算法和具有后向恢复能力的故障监测逻辑。理论分析和实验表明,提出的方法对于提高多通道系统的故障恢复率、减少失步次数等方面十分有效:与静态回卷相比,4通道和6通道下恢复成功率分别提高了47.49%和72.35%,失步次数分别下降了58%和85%,进而较大幅度促进了系统可靠性的提高,尤其是表决面数目较大时效果更为明显。
[Abstract]:The cross channel redundancy system, to maximize the recovery of output error of individual channel appears, is a prerequisite for the correctness of the voting results, but also more than the basic problems of the system. In an instruction cycle, multi task for cross channel redundant distribution in time, to vote before the current face time redundancy summary and hypothesis stage does not appear instantaneous fault estimation for late redundant time; this cumulative two redundancy, construct a larger time window, the window, increase the rollback depth in the fault, the instantaneous maximum recovery. Based on the above ideas, put forward the dynamic time series multi channel cross the redundancy in the model, according to the analysis of time series, which is designed to support the depth of rollback, backward recovery algorithm and has the ability to recover after fault monitoring and theoretical analysis and logic. Experimental results show that the proposed method can improve the fault of the multi-channel system recovery rate, reduce the number of out of step is very effective: compared with static rollback, the rate of recovery were increased by 47.49% and 72.35% 4 channel and 6 channel, step number decreased by 58% and 85%, and greatly promote the reliability of the system the increase, especially on large number of surface effect is more obvious.

【作者单位】：西北师范大学计算机科学与工程学院;甘肃省物联网工程研究中心;山东理工大学计算机科学与技术学院;
【基金】：国家自然科学基金资助项目(71263045) 甘肃省科技支撑计划项目(1204FKCA162)
【分类号】：TP306
【正文快照】： 3.College of Computer Science and Technology,Shandong University of Technology,Zibo Shandong 255049,China)0引言在故障监测的某一时间窗口内,偶然出现的一种干扰,将影响到时间窗口与干扰时间冲突的单元所对应的数据处理,造成数据不能正常输出。另外,一个永久故障的认

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