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백재진(Jaejin Baek),이광원(Kwangwon Rhie) 한국자동차공학회 2009 한국자동차공학회 학술대회 및 전시회 Vol.2009 No.11
Embedded software is integrated in electronics to operate defined functions and widely used in telecommunication, aerospace, medical and automobile industry. Embedded software in Automobile industry continues to increase in real-time system and safety-critical system for operating and control. Embedded software’s calculation result must be provided promptly in each system. Software brings so many advantages such as comfort and safety, the other side complexity of the vehicle cause frequent breakdown due to software failure. Therefore research of the embedded software reliability is needed to produce reliable software for vehicle. In this paper, Weibull distribution is considered to evaluate software reliability and some NHPP models are introduced.
ISO 26262의 RBD, FTA를 이용한 E/E/PE의 안전성분석 및 중요도분석
백재진(Jaejin Baek),이광원(Kwangwon Rhie) 한국자동차공학회 2009 한국자동차공학회 학술대회 및 전시회 Vol.2009 No.11
ISO 26262 for development and produce of Safety-related electrical and electronics product in the automotive industry standards is underway. The standard supporting whole develop-phase of E/E/PE is getting important in automotive industry because E/E/PE can prevent accidents or minimize the accidents. This paper introduces to analysis the safety using RBD and FTA. Finally, the importance of reliability are analyzed using the Reliability importance such as Birnbaum’ and Structural importance.
백재진(Jaejin Baek),이광원(Kwangwon Rhie) 한국자동차공학회 2009 한국자동차공학회 학술대회 및 전시회 Vol.2009 No.11
Because reliability is the important attribute in quality management, reliable components are necessary needed to produce high quality vehicle. Each component are certified by the reliability tests, but a vehicle, the components are integrated, has a breakdown due to an unexpected failure or predicted reliability of the components when it is operate. The reliability test covers wide range than normal condition. But it is not consider all situations. Reliability test during real operating has benefit to collect more situations because it considers various environment and behavior of drivers. This paper introduces the reliability prediction model based on operating failure and discuses its application.
알칼라인 수전해 설비의 비상정지 안전운전 매뉴얼 개발 연구
김현기(HYEONKI KIM),이광원(KWANGWON RHIE),김태훈(TAEHUN KIM),홍성철(SUNGCHUL HONG),이동민(DONGMIN LEE),신단비(DANBEE SHIN),서두현(DOOHYOUN SEO) 한국수소및신에너지학회 2024 한국수소 및 신에너지학회논문집 Vol.35 No.4
As the hydrogen economy receives attention, much research has been conducted on water electrolysis that can produce green hydrogen. After investigating the various risk factors that exist in the alkaline water electrolysis process through hazard and operability study and job safety analysis, which are risk assessments, measures to ensure safety were prepared and made into a manual. Possible risks that could occur during various emergency stop situations and operations were identified, and leakage of potassium hydroxide (KOH) and hydrogen used as electrolyte appeared to be the main risk. If you utilize a risk assessment for the relevant equipment when writing a manual, you will be able to prepare work procedures that substantially reduce risk factors.