• 한국철도학회논문집
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• 제13권3호
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• pp.251-256
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• 2010

본 연구에서는 충돌해석 프로그램의 해석 결과와 실제 시험결과에 대한 비교를 통하여 충돌해석 프로그램의 신뢰성에 대한 검증을 진행하였으며, 충돌해석 프로그램을 이용하여 도시철도차량에서 요구하는 차량 편성에 대한 충돌 해석 결과를 제시하였다.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2008년도 춘계학술대회 논문집
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• pp.806-812
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• 2008

Many kinds of rolling-stocks that have various control methods are being operated by Seoulmetro which is a history of a city railroad rolling-stock. Seoulmetro is being faced with a wheel management comparing of other lines with a perpendicular wear of wheel and a side damage, and so on, by operating several cars at a loop line. This is causing maintenance expenses increase and deteriorating a fusibility of rolling-stock, for it has an effect on a rolling-stock using. A cutting pattern of wheel and a wear form affect the expected span of a wheel. A wheel cutting cause is classifed into cutting for reprofiling of a flange wear of wheel and for removing every kind defect which originates from wheel wear. In this study, Seoulmetro exhibit a stable rolling-stock use method and a reasonable management method of wheel, analysing wheel exchange condition and cutting management of wheel.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2007년도 추계학술대회 논문집
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• pp.167-171
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• 2007

For ensuing rolling stock safety, it is necessary that safety management should be made systematically through its whole life cycle. That is to say, safety management activities for every steps of rolling stock life cycle should be defined, and the roles of managers such as executor, assessor, and certificator should be shared clearly. This paper defines the safety management activities based on IEC 62278, analyzing foreign and domestic safety regulation systems, and suggests the reformed safety management system for rolling stock in Korea

• 대한전기학회:학술대회논문집
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• 대한전기학회 2008년도 제39회 하계학술대회
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• pp.1073-1074
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• 2008

Compatibility concerns between train signalling systems and rolling stock are a significant problems to cross-acceptance of rolling stock in urban railway system. It is not possible to establish general rules for the maximum levels of interference allowed, valid for every country. So, in this paper, we measured conducted emission and inductive emission and analyzed results for DC rolling stock.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2009년도 춘계학술대회 논문집 에너지변화시스템부문
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• pp.189-191
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• 2009

Compatibility concerns between train signalling systems and rolling stock are a significant problems to cross-acceptance of rolling stock in urban railway system. In this paper, we measured the conducted emission flowing current through rails and analyzed results for DC rolling Stock.

• 한국철도학회논문집
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• 제6권1호
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• pp.41-48
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• 2003

Most of people spends their times in indoor about 85% of a day. Thus, indoor is more serious than outdoor concerned with the health. We discussed comfortableness in a railroad electric rolling stock, and focused on temperature and humidity. Electric rolling stock is one of major public transportation system because of an increasing in population and heavy traffic problems. The passengers are under the influence of indoor air quality such as air temperature, relative humidity and air velocity. Ventilation system in electric rolling stock should be designed for the health and comfort. One of the main aims is to create an acceptable thermal environment without draught problem. The draught sensation increases when the air temperature decreases and the air velocity increases. Airflow in electric rolling stork is turbulent. Temperature and humidity gradients in electric rolling stock have been studied. And, the difference between mean temperature and rotative humidity measured at 0.7, 0.9, 1.2, 1.7m above the floor. It has been found that temperature and relative humidity with large fluctuations caused more draught complaints.

• 벤처창업연구
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• 제7권4호
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• pp.41-47
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• 2012

철도차량은 사용기간이 길고 철로 위를 달리기 때문에 마모, 진동이 심하여 다른 교통수단에 비해 정비비용이 많이 소요된다. 이에 따라 정비최적화는 매우 중요하다. 본 연구에서는 코레일에서 운용하고 있는 철도차량 정비현황을 분석해 보고 개선방안을 찾고자 하였다. 특히, 차량정비인력이 많이 소요되는 일상검수에 대해 가장 효율적인 정비 주기와 방법을 적용하고자 하였다. 철도차량은 컴퓨터시스템 적용으로 자가진단이 가능하고 과거에 비해 차량의 품질이 많이 향상되었으나, 현행 일상검수는 관례적으로 짧은 기간 시행해야 한다는 측면에서 현재 비효율적인 측면을 시급히 개선해야 함은 당연하다. 따라서 본 연구에서는 차량의 상태를 반영한 개선된 일상검수 주기를 적용하여 차량의 신뢰성 확보와 정비비용을 최소화하고자 한다.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2003년도 추계학술대회 논문집(I)
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• pp.144-150
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• 2003

This paper shows the systematic design technology for development of new high speed rolling stock and the important item by the instance of G7 R＆D project titled "Development of High Speed Railway Technology". This paper also describes core technology and concrete examples of its application during the development of high speed rolling stock.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2011년도 춘계학술대회 논문집
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• pp.1457-1465
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• 2011

The saloon light is the device that can offer convenience and comfort to the driver and passenger when the train is operated at night or in the tunnel. Generally, The fluorescent type saloon for the rolling stock have been used, but the problems that are short life and the generation of heat have been brought about because the saloon lihgts of rolling stock are supposed to operated continuously long time, and high power consumption. So, the development of new type of saloon lights has been requested in order to solve these problems. And recently the various LED type lights have been developed and LED type saloon lights for rolling stock also has been developed. Therefore, we survey the characteristic, function and needed condition of the LED type saloon lights for rolling stock, and analyze the good and bad point, and then research the complement of weak point. We want to find the direction and develop the design of future LED saloon light type.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2011년도 정기총회 및 추계학술대회 논문집
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• pp.2973-2978
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• 2011

In this paper, a system is developed to support multi-attribute decision making for designing light-weight of rolling stock. Conceptual design of light-weight of rolling stock does not only mean reducing weight. It should be considered about some attributes like safety and environment, technology, etc. So technical attributes and needs of customers, manufacturers and management companies, passengers, should be reflected and qualitative evaluation methods are required. AHP(Analytical Hierarchy Process) and QFD(Quality Function Deployment) are used to decide weighted values of technical attributes and needs from customers. Finally, Alternatives for light-weight of rolling stock that are composed of alternatives of equipment are evaluated by TOPSIS(Technique for Order Preference by Similarity to Ideal Solution). A series of this process are made as a S/W. It could suggest a near-optimal alternative for light-weight of rolling stock.