本文介绍了汽车电子功能安全标准ISO26262中的FMEDA（故障模式、效应和诊断分析）方法，用于评估硬件架构在应对随机硬件故障时的有效性。内容涵盖硬件架构度量参数、电子-机械硬件元器件的失效模式和失效率的确定方法，以及如何根据ASIL等级需求进行安全目标分析。
Evaluation of the hardware architectural metrics.
FMEDA是硬件架构度量的一种验证方法。
The objective of this clause is to evaluate the hardware architecture of the item against the requirements for fault handling as represented by the hardware architectural metrics.
FMEDA的目的是通过硬件架构度量参数来验证硬件架构中为了满足需求而采用的错误处理机制。
This clause describes two hardware architectural metrics for the evaluation of the effectiveness of the architecture of the item to cope with random hardware failures.
为了处理硬件随机失效，采用两种硬件架构度量参数来验证架构的有效性。
=> FMEDA是针对硬件随机失效的分析方法。
For electromechanical hardware parts, only the electrical failure modes and the failure rates are considered.
对于电子-机械硬件元器件，只考虑电子方面的失效模式和失效率。
The estimated failure rates for hardware parts used in the analyses shall be de
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