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Evaluation of full and degraded mission reliability and mission dependability for intermittently operated, multi-functional systems

机译：评估间歇运行的多功能系统的完整和降级的任务可靠性和任务可靠性

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摘要

Availability is one of the metrics often used in the evaluation of system effectiveness. Its use as an effectiveness metric is often dictated by the nature of the system under consideration. While some systems operate continuously, many others operate on an intermittent basis where each operational period may often involve a different set of missions. This is the most likely scenario for complex multi-functional systems, where each specific system mission may require the availability of a different combination of system elements. Similarly, for these systems, not only is it important to know whether a mission can be initiated, it is just as important to know whether the system is capable of completing such a mission. Thus, for these systems, additional measures become relevant to provide a more holistic assessment of system effectiveness. This paper presents techniques for the evaluation of both full and degraded mission reliability and mission dependability for coherent, intermittently operated multi-functional systems. These metrics complement previously developed availability and degraded availability measures of multi-functional systems, in the comprehensive assessment of system effectiveness.
机译：可用性是评估系统有效性时经常使用的指标之一。用作有效性度量标准通常取决于所考虑系统的性质。虽然某些系统连续运行，但许多其他系统则是间歇性运行，其中每个运行周期通常可能涉及一组不同的任务。对于复杂的多功能系统，这是最可能的情况，其中每个特定的系统任务可能需要使用系统元素的不同组合。类似地，对于这些系统，不仅重要的是要知道是否可以启动任务，而且知道系统是否能够完成这样的任务也同样重要。因此，对于这些系统，需要采取其他措施来提供对系统有效性的更全面的评估。本文介绍了用于评估相干，间歇运行的多功能系统的完整和降级任务可靠性和任务可靠性的技术。在对系统有效性进行全面评估时，这些指标可补充先前开发的多功能系统的可用性和降级的可用性度量。

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