A Serial Method of Circuit Reliability Calculation Based on Probabilistic Transfer Matrix
A Serial Method of Circuit Reliability Calculation Based on Probabilistic Transfer Matrix
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发表时间：
2009
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通讯作者：
Jiang Jian-hui
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作者：
Jiang Jian-hui
概率转移矩阵（PTM）是一种较为准确的估计软误差对门电平电路可靠性影响的方法。然而，现有的方法目前只能用于小规模电路。本文提出了一种基于PTM的串行电路可靠性计算方法。将待评估电路划分为适当的尺度模块，利用原始PTM计算其可靠性。然后根据串行可靠性模型和各模块的可靠性值计算整个电路的可靠性。适当的电路划分参数(即通过74串联电路的实验得到了分区宽度。将提出的可靠性计算方法应用于ISCAS85基准电路。结果表明，该方法可用于较大的非冗余组合电路。通过部分ISCAS85电路的实例验证了新方法与MIL-HDBK-217标准推荐的可靠性计算方法是一致的。
Probabilistic transfer matrix(PTM) is a more accurate approach to estimate the effects of soft errors on gate level circuit reliability.However,the existed method can only be used for small-scale circuits so far.This paper presents a serial method of circuit reliability calculation based on PTM.The circuit under evaluation is partitioned into proper scale modules that their reliability can be calculated by the original PTM.Then the reliability of the whole circuit is calculated based on the serial reliability model and reliability values of all modules.The proper circuit partition parameter(i.e.partition width) is gotten by experiments with 74-Series circuits.The proposed new reliability calculation method is applied on ISCAS85 benchmark circuits.It shows that our method can be used for larger non-redundant combinational circuits.It is verified that the new method is consistent with the reliability calculation method recommended by MIL-HDBK-217 standard by using some ISCAS85 circuits.