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논문 기본 정보

자료유형
학술저널
저자정보
박병규 (에스피아이디) 이승환 (에스피아이디)
저널정보
한국자동차공학회 한국자동차공학회논문집 한국자동차공학회논문집 제26권 제6호
발행연도
2018.11
수록면
791 - 798 (8page)
DOI
10.7467/KSAE.2018.26.6.791

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When the vehicle E/E systems were developed to comply with over ASIL B level on ISO 26262, FMEDA should be executed in order to evaluate the SPFM, LFM, and PMHF. The items to be considered when conducting FMEDA are the base failure rates with regard to HW elements and the distribution-rates of failure mode, as well as determining whether the HW element is safety related or not. If the failure mode of the safety related HW element is likely to violate the safety goal, the single-point/residual/latent fault should be classified according to the type of safety goal violation. In addition, there is also a study on safety mechanisms, which technical means to defend or avoid failure modes for HW elements that could violate the safety goal. The numerical expression of how effective these safety mechanisms can defend the failure mode of an HW element that could violate the safety goal is the diagnostic coverage(DC). The higher the DC, the better the performance of the safety mechanism. It is also very helpful in reaching the quantitative target value for the vehicle E/E system. Therefore, it is very important to estimate the DC for safety mechanisms. Unfortunately, there is not enough useful reference to estimate the DC value. Moreover, the content described in Annex D of ISO 2662-5: 2011 can be misleading. In this paper, we recognized the misconceptions about the “Evaluation of diagnostic coverage” in ISO 26262-5: 2011 Annex D, and examined how to use the safety mechanisms in FEMDA. Furthermore, we suggested the method of estimating the DC of the safety mechanism and how to define the safety mechanism.

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Abstract
1. 서론
2. 본론
3. 결론
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UCI(KEPA) : I410-ECN-0101-2018-556-003548989