• 제목/요약/키워드: Passenger comfort

검색결과 208건 처리시간 0.035초

TTX 차량의 대차 현가장치 매개변수 분석 연구 (Parametric study of Bogie suspension for TTX train)

  • 김남포;구동회
    • 한국철도학회:학술대회논문집
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    • 한국철도학회 2004년도 춘계학술대회 논문집
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    • pp.619-625
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    • 2004
  • Tilting system allow the train to pass curve at higher speed without affecting passenger comfort. As the tilting trains offer the optimum means of providing faster and more comfortable rail service with minimum of environmental disturbance and capital investment. more than 14 countries have now adopted or are about to adopt tilting train technology. The Korean National Railroad is also planing to apply faster tilting train to the areas where the high speed rail service are not provided. This paper describes the parametric study to achieve the optimal suspension design of tilting bogie for 180 km/h Korean Tilting Train(TTX), which was done as a part of the Korean National R&D project.

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CFD를 이용한 지능형 객차 공기조화시스템 설계 (A Design of Intellectual Air-conditioning System using by CFD)

  • 배상호;박덕신;양우봉;박태영
    • 한국철도학회:학술대회논문집
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    • 한국철도학회 2004년도 춘계학술대회 논문집
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    • pp.177-182
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    • 2004
  • Railroad car is one of major public transportation because of an increase in population and heavy traffic problems. We design the concept with air filtration of HVAC system using CFD, select environment-friendly components and compose intellectual HVAC system. For this object, the research to connect HVAC system which control temperature, humidity, air flow with pollutant controlling system which can deal with particular dust, nasty smell. In case of train, fresh air should be provided continuously for pleasant environment of the cabin every season. The air will control outer dust, inner particular dust, $CO_2$ density by air conditioning, heating, humidity regulating, air filtering and ventilating. Ventilation system on passenger cars should be designed for the health and comfort of the passengers.

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한국형 틸팅열차 한빛200의 진동 특성에 관한 연구 (The Study on the Vibrational Characteristics of Korean Tilting Train Hanvit200)

  • 김남포;김정석;박태원
    • 한국소음진동공학회논문집
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    • 제18권8호
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    • pp.864-871
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    • 2008
  • The tilting trains can run on curve track about 30% faster than conventional train without affecting passenger comfort. As the tilting trains offer the optimum means of providing faster and more comfortable rail service with minimum of environmental disturbance and capital investment, it is widely adopted for commercial operation all over the world. Over several years, the Korea Railroad Research Institute(KRRI) and Ministry of Construction and Transportation(MOCT) have been developing 200 km/h Korean tilting train, Hanvit200. Hanvit200 adopts the pendulum type tilting mechanism and hybrid car body structure, mainly CFRP combined with steel. In this paper the vibrational characteristics of Hanvit200 was investigated through Eigen vector analysis, modal test and main line running test.

Lateral Control of an Autonomous Vehicle by Machine Vision systems

  • Park, Ju-Yong;Hong, Seong-Jae;Jeung, Seung-Gweon;Lee, Man-Hyung;Bae, Jong-Il
    • 제어로봇시스템학회:학술대회논문집
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    • 제어로봇시스템학회 2001년도 ICCAS
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    • pp.180.1-180
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    • 2001
  • In the autonomous vehicle, the reference lane is continually detected by machine vision system. And then the vehicle is steered to follow the reference yaw rates which are generated by the deviations of lateral distance and the yaw angle between the vehicle and the reference lane. To cope with the steering delay and the side-slip of vehicle, PI controller is introduced for the yaw rate feedback. And it is tuned by the simulation that the vehicle is modeled as 2 DOF verified by the results of the actual vehicle test. The lateral control algorithm by the yaw rate feedback has good performances of lane tracking and passenger comfort.

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Vehicle Simulator and it's Lateral Control by the Dead-Reckoning Positioning

  • Song, Hyo-Shin;Park, Ju-Yong;Eum, Sang-In;Ha, Seong-Ki;Bae, Jong-Il;Lee, Man-Hyung
    • 제어로봇시스템학회:학술대회논문집
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    • 제어로봇시스템학회 2002년도 ICCAS
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    • pp.101.5-101
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    • 2002
  • A vehicle simulator is made here to simulate the lateral control of vehicles. Dead-reckoning sensors which consist of gyroscopes and accelerometers are utilized for the positioning of it. A significant side-slip occurs when the developed vehicle is drove autonomously. To cope with the side-slip, the vehicle is steered to follow the reference yaw rate which is generated by the relationship between the target point and the position of vehicle. The experimental results show the good performances of lane tracking and the passenger comfort.

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Lateral Control of Autonomous Vehicle by Yaw Rate Feedback

  • Yoo, Wan-Suk;Park, Ju-Yong;Hong, Seong-Jae;Park, Kyoung-Taik;Lee, Man-Hyung
    • Journal of Mechanical Science and Technology
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    • 제16권3호
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    • pp.338-343
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    • 2002
  • In the autonomous vehicle, the reference lane is continually detected by machine vision system. And then the vehicle is steered to follow the reference yaw rates which are generated by the deviations of lateral distance and the yaw angle between a vehicle and the reference lane. To cope with the steering delay and the side-slip of vehicle, PI controller is introduced by yaw rate feedback and tuned from the simulation where the vehicle is modeled as 2 DOF and 79 DOF and verified by the results of an actual vehicle test. The lateral control algorithm by yaw rate feedback has good performances of lane tracking and passenger comfort.

한국형 틸팅열차 한빛200의 진동 특성에 관한 연구 (The study on the vibrational characteristics of Korean Tilting Train, Hanvit200)

  • 김남포;한성호;최강윤;박태원
    • 한국소음진동공학회:학술대회논문집
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    • 한국소음진동공학회 2008년도 춘계학술대회논문집
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    • pp.519-524
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    • 2008
  • The tilting trains can run curve track about 30% faster than conventional train without affecting passenger comfort. As the tilting trains offer the optimum means of providing faster and more comfortable rail service with minimum of environmental disturbance and capital investment, it is widely adopted for commercial operation all over the world. Over several years, the Korea Railroad Research Institute(KRRI) and Ministry of Construction and Transportation(MOCT) have been developing 200 km/h Korean tilting train, Hanvit200. Hanvit200 adopt the pendulum type tilting mechanism and hybrid car body structure, mainly CFRP combined with steel. In this paper the vibrational characteristics of Hanvit200 was investigated through Eigen vector analysis, Modal Test and main line running test.

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공진소멸 현상을 이용한 기존선 철도교량의 지간 최적화를 위한 연구 (A Study on the Optimal Span Length Selection of Conventional Railway Bridges considering Resonance Suppression)

  • 김성일;정원석;최은수
    • 한국철도학회논문집
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    • 제8권2호
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    • pp.137-144
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    • 2005
  • The possibility of resonance exists always in railway bridges unlike highway bridges because railway bridges are loaded repeatedly by specific trains which has equidistant wheel loads. Resonance phenomenon of the bridge can be broken out when exciting frequencies by tram determined from the speed and effective beating internal coincides with natural frequencies of the bridge Excessive fluctuations of dynamic displacements and accelerations by resonance cause unpleasant passenger comfort and instability of railway structures. On the other hand, resonance suppression phenomenon that all the previous loads which pass through the bridge sum to zero can be occurred. In case we apply this resonance suppression properly, design of stable railway bridge from dynamics point of view can be made. In the present study, most dominant beating internal of conventional trams will be find. A(ter that. specific span length of the bridge which derives resonance suppression can be selected for railway bridges which accomplishes superior dynamic behavior.

테르밋 레일용접의 특성에 관한 연구 (A Study on the Characteristics of Thermit Welded Rail)

  • 나성훈;양신추
    • 한국철도학회:학술대회논문집
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    • 한국철도학회 2001년도 추계학술대회 논문집
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    • pp.488-493
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    • 2001
  • CWR technology is generally believed to contribute to the increase of train speed and bring a variety of significant advantages, such as the decrease in track works, noise and vibration as well as the improvement of passenger comfort. In CWR technology, welding is considered to be one of the most important element technologies. Among the various welding methods, thermit welding is the most frequently used one for site welding since the operation is simple and the instruments are light as well as easy to deal with. However, it could cause interference with safety operation of trains since thermit welding points, are essentially made of castings and there are potentialities of defects according to the operation conditions, the environment of the site as well as the dexterity of the worker. This study tries to describe the characteristics of thermit welding, defect-causing factors and defect-detection methods at welding points.

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한국형 고속열차의 최고속도에서 압력변동 하중과 실내소음 특성 분석 (Characteristics of Pressure Fluctuation and internal noise level for Korean High Speed Train)

  • 박춘수;최성훈;이태형;목진용;김기환
    • 한국철도학회:학술대회논문집
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    • 한국철도학회 2005년도 춘계학술대회 논문집
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    • pp.338-343
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    • 2005
  • The Korean high speed train(KHST), developed since 1996, is presently undergoing commissioning tests on the high-speed track as well as on the conventional track since 2002. The purpose of the commissioning test is twofold: first to verify the performance of the train-set and equipments, and to demonstrate system reliability. Last December, KHST has reached the maximum speed of 350km/h and a number of data proving the performance of the train has been acquired. Among the data noise level and pressure variation in a cabin are important factors effecting passenger's comfort. Discussed in this paper are interior noise and pressure variation when the train passes tunnels during the 350km/h test.

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