• 한국컴퓨터정보학회:학술대회논문집
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• 한국컴퓨터정보학회 2011년도 제44차 하계학술발표논문집 19권2호
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• pp.23-24
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• 2011

본 논문에서는 승객 수송수요 반영 단계에서는 역별 승하차인원, 시간대별 재차인원 등 수송수요에 반영할 기준을 설정하여 수송력과 승차인원의 기준을 판단하고, 열차운행계획 수립 단계에서는 운행구간, 선로용량, 선로조건 등 제약조건과 적정수송력에 맞는 운행계획을 수립하고, 마지막 단계에서 경제성, 능률성, 합리성 등을 감안한 운용효율 향상을 위한 열차 DIA를 작성하고자 한다. 또한 통계적 분석절차에 따라 재차인원과 운행횟수를 각각의 독립변수와 종속변수로 산정하여 두 변수간의 상관관계를 확인한 후 회귀분석을 통해 얻은 회귀식을 실제열차운행 횟수와 비교하여 최적의 열차운행횟수를 산정하였으며 회귀식의 유효성 검증을 통해 열차운행 환경변화에 신속하게 대응할 수 있는 유연한 시스템을 구축한 후 서울도시철도공사 실용 Dia에 적용하여 유효성을 검토하였다.

• 한국산학기술학회논문지
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• 제18권10호
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• pp.681-687
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• 2017

본 논문은 고속철도 차량 주행풍에 기반한 풍력 발전의 가능성을 분석한다. 저자는 풍속계와 데이터 분석 프로그램을 포함한 풍속 측정 장비를 구성하였으며, 이를 활용해 실제 고속 철도 차량 노선 부근에서 주행풍의 특성을 측정하였다. 저자는 반복적인 측정을 통해 주행풍 특성의 변화를 야기할 수 있는 다양한 요인들의 영향을 고려하였다. 우선적으로, 저자는 터널의 유무 및 계곡 지형 요인에 의해 구분되는 세 지점에서 개별적으로 주행풍의 풍속 및 지속 시간을 측정하여, 지형 요인에 따른 주행풍의 특성 차이를 분석한다. 또한 세 단계에 걸쳐 높이를 점증시키며 주행풍의 특성을 측정해, 차량과의 상대적인 높이에 따른 주행풍의 변화를 분석한다. 나아가 주행 차량의 특성을 고려하여, 길이와 중량에서 차이가 있는 Korean Train eXpress (KTX) 차량과 Super Rapid Train (SRT) 차량에 따른 주행풍의 차이를 분석한다. 끝으로 측정된 주행풍의 풍속 및 지속 시간을 토대로, 실제 풍력 발전에 도입할 경우 얻을 수 있는 풍력 에너지 수준을 도출하고, 이를 통해 기대되는 효용성에 대해 논의한다.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2008년도 춘계학술대회 논문집
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• pp.214-219
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• 2008

Recently, railway has been pointed to the efficiency of transportation, rapid transit, and comfortable train ride. In the case of domestic situation, both rapid transit railway and existing railway have been operated in higher speed and the construction of railway near the city building has been increased as well. Because of the rapid transit system and heavy railway, the noise and vibration of railway has been increased so that the strong standards in terms of environmental matter should be required. Therefore, the solution to avoid environmental matters becomes one of the most important factor in constructing railway. In this study, floating slab system which is one of the solution to avoid noise and vibration in railway has been introduced, and the foreign technology and the trend of this business has been investigated. In addition, the method of conceptual design and construction of floating slab system according to the isolator has been introduced.

• 한국방재학회 논문집
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• 제8권6호
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• pp.61-66
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• 2008

철도운행에 있어 분기기는 열차를 주행선로에서 이웃한 선로로 이동시키는 매우 중요한 역할을 수행하는 장치이다. 분기기는 레일 궤도설비 중 유일한 가동부로 구조도 복잡하고 천이과정 중 결선부에서 차륜, 레일간의 급격한 운동변화가 필연적으로 발생되어 안전성 문제와 반복되는 통과열차의 충격하중에 의한 진동 문제가 항상 거론되고 있다. 분기기의 진동은 레일과 궤도하부 노반의 상태, 그리고 지반의 물성치 등에 따른 변수가 많으므로 해석모델로 신뢰성있는 정량적인 결과를 도출하는 것은 매우 어려운 일이다. 따라서 대부분의 분기기진동에 관한 문제는 순수 해석적인 기법보다는 실험과 경험에 기초한 방법을 많이 적용하고 있다. 분기기의 진동 예측은 불확실성이 높은 인자들에 대해서 실험 및 측정값을 병행함으로써 예측정확성을 높일 수 있다. 본 연구에서는 기존선구 망간 분기기 크로싱부에서 발생하는 진동 측정치 결과를 열차 종류별, 거리별, 분기기별로 비교 분석하고 향후 틸팅열차 증속시 망간 분기기 크로싱부에서 발생하는 진동 발생 수준을 예측 평가하였다. 예측에 사용된 지반의 동적 거동은 선형 한계에 있다고 가정하였다.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2011년도 정기총회 및 추계학술대회 논문집
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• pp.297-302
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• 2011

Railway construction in the random vibration natural phenomena, as well as a relatively regular train loads for dynamic loads, such as a usability and safety should be ensured. Vibration due to train loads and seismic vibrations caused by wind compared to the typically very small in size, rather than the safety of the structure affects the usability. Recently in the downtown area, ground and underground facilities, such as a permanent facility that may cause excessive vibration increases, associated with the construction of these transportation facilities on ground vibrations of structures has been increasing concern and complaint. More recently, high-speed train vibration and noise due to furnace is increasing. In order to solve this problem, such as soundproof considering several feet, but by applying the vibration and noise reduction measures insufficient for the study is Free. In this study, track structure, track, and the inside of the building to support the system, the different forms of neurological history and share about the history cheonanahsan high-speed rail, if passed by the bus stop on the train loads of noise, and the history of interior noise and vibration measurement / analysis of measurement results to assess the relative comparison with the relevant provisions were reviewed. Based on this history, future plans for the design of the bridge to reflect the results of a study is intended to provide information. Waiting for the analysis of vibration and noise reduction, cheonanahsan history passed quietly in the train, on average, appeared to 67.53dB and 65.41dB nervous week on average, were measured with the history. Nervous week waiting room of history and the history cheonanahsan radically different shapes and sizes, so a direct comparison is impossible, but the vibration caused by the disc on the base of the polyurethane elastomer disk is not supported by GERB SYSTEM Waiting more effective in reducing the noise level considered in The main materials for railway and for the localization will help to ensure affordability is considered.

• 전기학회논문지P
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• 제65권4호
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• pp.340-345
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• 2016

Railway vehicle battery is supplying the power required for the initial start-up of the train, in the event of a fault in the vehicle, or catenary for supplying emergency power is one of the components are very important. Currently, the railway vehicles such as nickel-cadmium batteries are being used [1,2]. Ni-Cd batteries as a battery installed in the railway vehicles have a strong corrosion resistance is included, The charge-discharge performance is significantly degraded in cold weather, there is a danger of deterioration or explosion. Train accidents have been caused a lot of damage due to rapid deterioration and cracking of the battery and memory due to the effect of Ni-Cd batteries. In order to solve the problems, There is no risk of degradation, deterioration and leakage, cracking and exploding. maintenance is simple and applied measures proposed to apply Lithium Polymer battery of high performance. In addition, the lack of capacity problems identified by testing the different special systems is replaced by a 70Ah lithium-polymer battery is possible without changing the batteries of 50Ah caused by installing additional equipment in existing older trains were applied to the vehicle.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2007년도 춘계학술대회 논문집
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• pp.632-642
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• 2007

우리나라는 남북간 거리가 약 1,200km, 동서간 거리가 약 840km인 반도국가이다. 이 국토의 철도교통 인프라로 고속열차 KTX와 장거리용 일반열차, 그리고 대도시 지하철이 있을 뿐이다. 전 국토의75%가 산악지역에 분포된 우리나라에 관광 및 지역간 교통 수송을 담당하는 산악열차가 아직 운행되지 않고 있다는 것은 아쉬운 점이다. 국토 균형 발전 정책과 철도 인프라 구축 우선 정책의 원칙을 고려하여, 우선 3호선 구파발 역에서 북한산을 경유하고 4호선 쌍문 역 구간을 운행하는 산악열차를 건설한다면 관광 측면은 물론 서울의 서북지역과 동북지역을 관통하는 지선 역할 측면에서 모범이 될 수 있다고 본다. 설계, 건설, 운영의 친환 경성도 확보될 수 있음은 물론이다.

• 한국항공운항학회지
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• 제22권3호
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• pp.24-32
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• 2014

Due to the rapid growth of domestic and overseas airline markets, the demand for airline pilots has also been growing fast. Meeting such a market needs, central government, Ministry of Land and Transportation has set up civil airline pilot training center at Ulgin airport to train and provide the market with commercial airline pilots. Not only central government but universities in Korea also have tried to train pilots by operating flight training academies. Even though there are more than a dozen of flight training centers including colleges and private academies, there have been less efforts to measure and evaluate the effectiveness of the flight training school's curriculums compared to other scholar majors in a university. Therefore this paper tried to evaluate the educational effectiveness of the curriculums using the Kirk-Patrick measurement model, which has been regarded as one of the most popular and accurate measurement tool for an empirical research in social science. According to the empirical research, it was found out the inter-personal relationship between an instructor pilot and flight trainee was perceived as the most important factor to have an impact on learning abilities and student's behaviors.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2007년도 하계종합학술대회 논문집
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• pp.99-100
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• 2007

Rapid developments of industry and economics have made a metropolis which demands an effective urban transport management system (UTMS). Specially, this paper considers a subway surveillance system based on integrated wireless LAN technologies for public safety. Since a current subway platform security entirely relies on conventional closed circuit television camera (CCTV) or human operators, subway train drivers cannot detect platform states and cope with abnormal situations or accidents immediately. However, through the IP cameras and some wireless routers, high qualify images of the platform conditions can be directly delivered to the train drivers and other station employees in advance of train entering the platform. In this paper, several design issues and problems are discussed when building up the subway management system. Further, we illustrate a system model with the system requirements in real parametric values in order to draw concrete system designs and to realize a practical implementation of the future UTMS.

• 한국자동차공학회논문집
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• 제15권1호
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• pp.38-48
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• 2007

this paper analyses how much acceleration and deceleration of urban rail vehicle should be applied and how to choose an operation mode to minimize energy consumption when train runs between stations within the fixed operation time. The decided operation pattern satisfying the minimum energy consumption becomes a target trajectory and a basis for the controller design criteria. To make this goal it grasps the characteristics of urban rail vehicle, realize operation energy model of urban rail vehicle and verity the accuracy of embodied model the Matlab simulation with the same operation result of real route. It searches for operation pattern to minimize operation energy by changing the acceleration and deceleration on the imaginative route and proposes operation pattern minimizing energy consumption by applying real operation data between stations of Seoul Metropolitan Subway Line 6.