The second edition of standard ISO 26262 (ed. 2018) for functional safety assessment in the automotive industry requires a hardware evaluation using the probabilistic metric for random hardware failures (P_MHF). The standard for mentioned purpose highly recommends the fault tree analysis (FTA) utilization but does not give any specific calculation example. Therefore, this article describes computational procedures with derivation and explanation of mathematical formulas for various hardware architectures of electronic systems. Described formulas consider impact of multiple failures and impact of elf‐tests, but formulas are relatively simple. This simplicity allows them to be used in the early stages of hardware development when frequent hardware design changes can be expected. Thus, the article with attached case study is intended not only for scientists but also for developers of critical safety–related electronic systems in the automotive industry.

中文翻译：

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符合ISO 26262标准的硬件可靠性计算程序的应用

用于汽车行业功能安全性评估的第二版标准ISO 26262（2018年版）要求对随机硬件故障使用概率度量进行硬件评估（P _MHF）。用于上述目的的标准强烈建议使用故障树分析（FTA），但未提供任何特定的计算示例。因此，本文介绍了计算过程，并推导了电子系统各种硬件体系结构的数学公式。所描述的公式考虑了多次失败的影响和elf测试的影响，但是公式相对简单。这种简单性使得它们可以在硬件开发的早期阶段使用，这时可以预期会频繁更改硬件设计。因此，本文附有案例研究，不仅适用于科学家，而且适用于汽车行业中与安全相关的关键电子系统的开发人员。