철도차량용 소프트웨어 소스코드 검증방안 연구

강치용(Chi-Yong Kang),조치환(Chi-Hwan Cho),공명상(Myung-Sang Kong),강찬용(Chan-Yong Kang) 한국철도학회 2015 한국철도학회 학술발표대회논문집 Vol.2015 No.5

철도차량 유지보수 적용방향에 관한 연구

이강성(Lee Kang-Sung),손웅(Sohn Woong),강찬용(Kang Chan-Yong) 한국철도학회 2009 한국철도학회 학술발표대회논문집 Vol.2009 No.5월

At the Rolling-stock, most important thing is thorough maintenance for safety as a mass transit. Recently, many studies of cost down method and acquisition of high reliability have being progressed with considering of safety. Maintenance cost is closely relative to the preventive maintenance. But generally the preventive maintenance is decided in compliance with an experience. So the study of cost down method at the preventive maintenance is difficult. In this study, many results of effectiveness and optimization for the preventive maintenance are checked. Then, it is possible that efficiency preventive maintenance method will be able to suggest.

철도차량 RAMS 적용에 관한 연구

오지은(Oh Ji Eun),강찬용(Kang Chan Yong),김철호(Kim Chul Ho) 한국철도학회 2004 한국철도학회 학술발표대회논문집 Vol.- No.-

This paper is application of System Assurance(SA) for the rolling stock. As railway systems become more complex, design teams are increasingly under pressure to deliver, design solutions, which integrate both technical and Systems Assurance(SA). Systems Assurance is the application of management methods and analysis techniques to ensure that a design meets Reliability, Availability, Maintainability and Safety(RAMS) criteria. It should be clearly understood that the intent of System Assurance is not just to provide analytical techniques as a metric on performance, but more importantly it should provide a management tool with which to co-ordinate and assure the whole design. System Assurance encompasses the ongoing requirement to consider safety, and RAM through each stage of a Project, from feasibility study through to commissioning and operation. If System Assurance is undertaken properly at feasibility study at the design stages of a Project, the benefits of such analyses can be significant in identifying potential problems early enough for action to be taken before manufacture or installation. At commissioning, RAMS demonstration activities are undertaken to validate the predictive and analytical techniques undertaken during the design.

철도차량 FRACAS System 적용에 관한 연구

오지은(Oh Ji-Eun),강찬용(Kang Chan-Yong) 한국철도학회 2008 한국철도학회 학술발표대회논문집 Vol.- No.-

This paper addresses the Fault Monitoring System developed by Hyundai-Rotem based on the Mil-HDBK-2155 Failure Reporting, Analysis and Corrective Action System. The purpose of a FRACAS is to provide a documented history of any problems, failures, their associated corrective actions as well as detailing how and why each problem arose or failure occurred during the Warranty Period for Rolling Stock delivered by Hyundai-Rotem. The Fault Monitoring System can assess the reliability, availability and maintainability as well as can predict no. of failure at a time which can input to Life Cycle Cost

EN50128 SIL4 소프트웨어 프로세스 ISA 인증 사례 연구

조치환(Chi-Hwan Cho),강찬용(Chan-Yong Kang),황진호(Jin-Ho Hwang) 한국철도학회 2010 한국철도학회 학술발표대회논문집 Vol.2010 No.7

It is inevitable to control the systematic failure to obtain the software safety integrity of embedded software installed in rolling stock. Because it is not possible to assess systematic failure integrity by quantitative methods, SILs are used to group documentation, methods, tools and techniques throughout software development lifecycle which, when used effectively, are considered to provide an appropriate level of confidence in the realization of a system to a stated integrity level. Normally, safety approval process is through generic product, generic application and specification application for . For safety approval on generic application of software based system, it is required to apply the certified software processes from the planning stage for the assigned SIL. As such, we will develop project specific application with high safety integrity within time limit of contractual delivery schedule through software assessment to the modified area with the re-use of certified software module and documentation. At this point, Hyundai Rotem has developed software processes applicable to support SIL 4 based on EN50128 which was assessed and certified by TUV SUD. This paper introduces the Hyundai Rotem's detailed approach and prospective action to achieve software safety integrity level.

자기부상열차 RAM DATA 관리방안

이창덕(Lee Chang-Deok),강찬용(Kang Chan-Yong) 한국철도학회 2007 한국철도학회 학술발표대회논문집 Vol.- No.-

This paper is reviewed RAM(Reliability, Availability and Maintainability) data table utilized for RAM data management to Urban Maglev Transit. As railway systems become more complex, the RAM requirements are reinforced to ensure that a design meets Reliability, Availability, Maintainability criteria. Therefore, it needs the efficient management for RAM data of railway system to meet RAM target. At this study, RAM data management format is suggested to ensure reliability and maintainability based on acquired experience for overseas rolling stock. This RAM data table and FMECA(Failure Mode Effect Criticality Analysis) table are useful to the calculation of MTBF(Mean Time Between Failure), MTBSF(Mean Time Between Service Failure) and Maintainability. Also, this RAM management table will be efficient to improve the RAM evaluation to Urban Maglev Transit.

System Engineering 측면에서 전동차 화재기술관리

장정훈(Chang Jung Hoon),강찬용(Kang Chan Yong) 한국철도학회 2005 한국철도학회 학술발표대회논문집 Vol.- No.-

In case of rolling stock, SEMS is generally applied in the advanced countries, but is start stage in our country. SEMS is defined the system engineering management system in order to achieve the optimized train performance among the several client requirements aspect of technical engineering management during the design life cycle. And the fire engineering activities in hong kong EMU project are introduced aspect of SEMS in this paper. The fire engineering at rolling stock in view of SEMS controls to apply the satisfied interior material by the fire safety standards (regulation of the commute urban subway safety guideline by the MOCT, BS 6853, NFPA 130, NF F 16-101) and to minimize the fire load in order that passengers egress safe from the fired rolling stock. The rolling stock in the advanced countries is designed to stand for 15-20 minutes in considering the rolling stock to be fired in tunnel. For passenger fire safety, the passenger evacuation provision and progress is set up.

전기철도차량과 지상신호시스템의 전자파적합성 고찰

박경수(Kyoung-Soo Park),윤용진(Yong-Jin Yun),강찬용(Chan-Yong Kang),조치환(Chi-Hwan Cho),이병택(Byung-Taek Lee) 한국철도학회 2018 한국철도학회 학술발표대회논문집 Vol.2018 No.10

본 논문에서는 전기철도차량과 지상신호시스템의 EMC 인터페이스 관리를 위한 기초 연구로 국내 고속차량과 AF 궤도회로간의 전자파적합성에 대하여 분석하였다. KTX-원강, SRT을 대상으로, 차량 운행 시 발생하는 고조파 전류를 측정하였다. 측정된 고조파 전류는 운행 노선에 설치된 UM-71, TI-21과 전자파적합성을 검토하였다. 검토 결과, 차량과 궤도회로간의 전자파적합성은 만족하였다. TI-21 C-Type의 1980Hz 대역에서 328mA의 상대적으로 높은 고조파 전류가 측정되었다. 이는 차량의 주전력변환장치의 제어 방식에 의해 발생된 고조파 노이즈로 9Pulse 제어를 사용하는 SRT에서 발생하였다. 조합시험을 통해 제어 방식을 13Pulse로 변경하였을 때, 1980Hz의 고조파 노이즈는 34mA로 감소되었으며, 모든 신호주파수 대역에서 고조파 전류도 감소되었다. 향후, 본 연구 결과를 기반으로 EMC 인터페이스 관리 자료로 활용이 가능하며, 추가적으로 국내 차량과 지상신호간의 EMC 인터페이스 관리를 위한 연구도 필요하다.

TGA 분석을 통한 중합체 열분해율이 화재 성장에 미치는 영향성에 대한 수치해석연구

양성진(Yang Sung-Jin),이창덕(Lee Chang-Deok),강찬용(Kang Chan-Yong) 한국철도학회 2009 한국철도학회 학술발표대회논문집 Vol.2009 No.11월

Solid polymeric materials undergo both physical and chemical changes when heat energy supplied into them, this will result in undesirable changes to the properties of materials. (ASTM) definitions should provide helpful guidelines. Thermal decomposition is 'a process of extensive chemical species change caused by heat' In terms of fire, whereby chemical decomposition of solid polymer generates gaseous fuel vapors, which can be mixed with air on the surface of the polymer. Under the condition of proper concentration of mixed fuel gas and surrounding temperature, it ignites above the solid material. Heat energy released from this combustion reaction feed back into the solid material to continue production of gaseous fuel vapors or volatiles. As such, this process can be a continues feed back loop. In the process of general fire phenomena, each thermal decomposition characteristic which various polymers have affect on fire growth. A measure of how fast thermal decomposition take place on the polymer decide rates of emission of gaseous fuel vapors. Hence, it can be important factor to affect on fire growth. In this study, rate of thermal decomposition of polymer analyzed through the TGA(Thermal Gravimetric Analysis) test. Result of TGA test was represented to the form of Arrhenius 1-order reaction rate equation by way of linear interpolation method. And then, effect of thermal decomposition rate on fire growth was examined through the numerical method with FDS(Fire Dynamics Simulator).

룸 코너 콘 칼로리미터 시험(ISO 9705)과 비교를 통한 FDS 열분해 모델의 신뢰성 분석

양성진(Sung-Jin Yang),이창덕(Chang-Deok Lee),오지은(Ji-Eun Oh),강찬용(Chan-Yong Kang),김학범(Hag-Beom Kim),이덕희(Duck-Hee Lee) 한국철도학회 2011 한국철도학회 학술발표대회논문집 Vol.2011 No.5

Actual fire test under a laboratory and fire simulation by using computer are considered into main methodology in order to estimate and predict fire size of railway train. Even if practical fire size could be obtained from the full-model railway car test such as a large scale cone- calorimeter test, it is not always possible and realistic due to that expensive cost and attendant dangers could in no way be negligible. In this point of view, fire simulation analysis method based on the computational fluid dynamics could be proposed as an alternative and it seems to be also efficient and reasonable. However, simulation results have to be verified and validated in accordance with the proper procedure including comparing analysis with the actual fire test. In this paper, fire load and growth aspect was investigated through the room corner test (ISO 9705) for the mock-up model of the actual railway car. Then, it was compared with the output data derived from the simulation by using Pyrolysis Model of the FDS (Fire Dynamics Simulator, by NIST) for the exact same domain and condition corresponding with pre-performed room-corner test. This preliminary verified and validated fire modeling method could enhance the reliability of output data derived from the fire simulation under the similar domain and condition.