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首页> 外文期刊>Reliability, IEEE Transactions on >Multi-Valued Decision Diagram-Based Reliability Analysis of src='/images/tex/348.gif' alt='k'> -out-of- src='/images/tex/388.gif' alt='n'> Cold Standby Systems Subject to Scheduled Backups
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Multi-Valued Decision Diagram-Based Reliability Analysis of src='/images/tex/348.gif' alt='k'> -out-of- src='/images/tex/388.gif' alt='n'> Cold Standby Systems Subject to Scheduled Backups

机译： src =“ / images / tex / 348.gif” alt =“ k”> -out-of- src =“ / images / tex / 388.gif” alt =“ n”> 受到预定备份的冷备用系统

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摘要

To improve the system reliability while conserving the limited system resources, cold standby sparing is often used. In computing tasks, because active components fail randomly, and the standby component has to pick up the mission task whenever required, scheduled backups are often implemented to save the completed portions of the task. The backups can facilitate an effective system recovery where the standby component can take over the mission task from the last backup point instead of resuming the mission task from the very beginning. This paper considers a -out-of- cold standby system subject to scheduled backups, where components are online and operating, with the remaining components waiting in the unpowered, cold standby mode. Whenever an online component fails, a cold standby component is activated to take over the mission task from the last backup point. The backup intervals are deterministic, but can be even or uneven. As the component may fail due to an imperfect switching from the standby state to the fully powered up state, the switching failure is also considered in the system model. A multi-valued decision diagram (MDD)-based analytical approach is proposed to evaluate the reliability of the considered system, and its complexity is analyzed. The proposed method is applicable to systems with non-identical components following arbitrary lifetime distributions. Examples are given to illustrate the MDD-based method. The correctness and efficiency of the proposed method are verified using Monte Carlo simulations.
机译：为了在节省有限系统资源的同时提高系统可靠性，经常使用冷备用备用。在计算任务中，由于活动组件随机发生故障，并且备用组件必须在需要时拾取任务任务，因此通常会实施计划备份以保存任务的完成部分。备份可以促进有效的系统恢复，其中备用组件可以从最后一个备份点接替任务任务，而不必从一开始就恢复任务任务。本文考虑了按计划进行备份的冷外备用系统，其中组件处于联机状态且正在运行，其余组件在未通电的冷备用模式下等待。每当联机组件发生故障时，都会激活一个冷备用组件，以从最后一个备份点接替任务任务。备份间隔是确定的，但可以是均匀的或不均匀的。由于组件可能由于从待机状态到不完全供电状态的不完美切换而发生故障，因此在系统模型中也要考虑切换失败。提出了一种基于多值决策图（MDD）的分析方法来评估所考虑系统的可靠性，并分析其复杂性。所提出的方法适用于具有遵循任意寿命分布的不同组件的系统。给出示例以说明基于MDD的方法。使用蒙特卡洛模拟验证了所提方法的正确性和有效性。

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