Availability demonstration with confidence level based on reliability and maintainability
Availability demonstration with confidence level based on reliability and maintainability
复制标题
基于可靠性和可维护性的置信度可用性演示
DOI：
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
B. Bertsche
中科院分区：
文献类型：
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作者：
F. Müller;P. Zeiler;B. Bertsche
在第一次故障后，通过适当的措施，例如维修或维护，技术产品或系统可以再次进入功能状态。因此，通常系统的使用寿命尚未完成。对于评估这种可修复系统，可用性是一个重要参数。通常，如果例如演示系统或组件的可靠性时，需要考虑置信度，特别是如果演示基于有限的信息。因此，基于相同信息的可用性演示也需要表达，包括置信度。本文提出了一种具有置信度的可用性演示的新程序。该程序基于故障和维修时间的纯样本。它允许单独的样本大小，即它们不必相等。该过程不需要特殊的故障分布类型和修复行为。它可以演示时间依赖性和平均可用性。此外，通过具有已知故障和修复时间样本的可修复系统的案例研究来说明该过程。研究了样本大小的影响。最后，还通过一个示例展示了新方法应用于更一般场景的潜力。
After a first failure, with appropriate measures, such as repair or maintenance, a technical product or system can be put into the function state again. Thus, usually the service life of the system is not completed. For the evaluation of such a repairable system, the availability is an important parameter. Typically, if e.g. the reliability of a system or component is demonstrated, a confidence level is considered, especially if the demonstration is based on limited information. Consequently, the availability demonstration, based on the same information needs to be expressed including a confidence level, too. In this paper a new procedure for the availability demonstration with confidence level is presented. The procedure is based on the pure samples of failure and repair times. It allows individual samples sizes, i.e. they do not have to be equal. The procedure does not require special distribution types of failure and repair behavior. It enables the demonstration of the time-dependent and average availability. Furthermore, the procedure is illustrated by a case study of a repairable system with known samples of failure and repair times. The influence of the samples sizes is investigated. Finally, the potential of the new approach to be applied to more general scenarios is shown based on an example, too.