• Title/Summary/Keyword: Railway vehicle

Search Result 1,545, Processing Time 0.031 seconds

A Study on the Rolling Stock Scheduling considering maintenance activities in Railway (유지보수를 고려한 철도차량 운용계획에 관한 연구)

  • Kim Dong-Hee;Hong Sun-Heum
    • Proceedings of the KSR Conference
    • /
    • 2003.05a
    • /
    • pp.280-285
    • /
    • 2003
  • The process of railway traffic planning is composed of several steps such as long-term, mid-term. short-term, and real-time plan. The planning of vehicle and manpower resources is a main research topic in tactical short-term planning step. Railway vehicle is usually consisted of a power car, passenger/freight cars and human resource is composed of engine driver, cabin crew, ground personnel. So far, power car was main research target in railway vehicle scheduling problem. Recently according as the light electric railway or high-speed railway is introduced, the operational planning of trainset vehicles become important, In this paper, we introduce the conceptional model for trainset restoring problem and developed heuristic algorithm.

  • PDF

Vibration Control and Steering Performance Evaluation of Railway Vehicle Using Magnetorheological Damper (MR댐퍼를 이용한 철도 차량의 진동제어 및 조향성능 고찰)

  • Ha, Sung-Hoon;Choi, Seung-Bok;You, Won-Hee
    • Transactions of the Korean Society for Noise and Vibration Engineering
    • /
    • v.18 no.5
    • /
    • pp.524-532
    • /
    • 2008
  • This paper presents yaw vibration control performances of railway vehicle featuring controllable magnetorheological damper. A cylindrical type of MR damper is devised and its damping force is evaluated by considering fluid resistance and MR effect. Design parameters are determined to achieve desired damping force level. The MR damper model is then incorporated with the governing equations of motion of the railway vehicle which includes vehicle body, bogie and wheel-set. Subsequently, computer simulation of vibration control via proportional-integral-derivative(PID) controller is performed using Matlab. Various control performances are demonstrated under external excitation by creep force between wheel and rail.

Preliminary design of a scaled railway vehicle simulator (상사기법을 이용한 차량시뮬레이터 기초 설계)

  • Kim, Hong-Chan;Kim, Jeung-Tae;Lee, Hi-Sung;Oh, Se-Been
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
    • /
    • 2008.04a
    • /
    • pp.951-956
    • /
    • 2008
  • The study is to develop a foundation design for a railway vehicle simulator using a scaled model. Although a scaled simulator is limited to manipulate the dynamics of a full-size railway vehicle, it has been known to have an advantage, since a scaled model could provide the fundamental dynamic behavior within a limited space of a laboratory facility and with a low operation cost while an experiment is conducted. This study is to propose a design strategy for a simulator so that a small scaled roller rig could be fabricated in a laboratory based on the design philosophy. The data obtained from the scale model is also experimentally investigated in conjunction with appropriate non-dimensional analysis so that the output results should be interpreted to the railway vehicle.

  • PDF

A Study on the Development of Propulsion Control Simulator for Maintenance Training of Railway Vehicle (철도차량 유지보수 훈련용 추진제어장치 시뮬레이터 개발에 관한 연구)

  • Kim, Bo-Sung;Jung, No-Geon;Kim, Jae-Moon
    • The Transactions of The Korean Institute of Electrical Engineers
    • /
    • v.64 no.10
    • /
    • pp.1528-1534
    • /
    • 2015
  • This paper designed the railway vehicle running device with a proto-type for the railway vehicle maintenance training and developed a propulsion control device simulator equipped the imitation steering wheel. In addition, this paper applied a multi-thread technology in order to implement the staged fault and the propulsion control device protected operation test and an implementation of the failure that occur in actual rail vehicle and confirm the validity as the propulsion control device simulator for the maintenance training.

A Study for Roll characteristic of Railway Vehicle (철도차량의 Roll 특성에 관한 연구)

  • Yang, Hee-Joo;Lee, Kang-Wun;Park, Kil-Bae;Seong, Jae-Ho
    • Proceedings of the KSR Conference
    • /
    • 2006.11b
    • /
    • pp.1184-1189
    • /
    • 2006
  • Railway vehicle have three translational motions-longitudinal, vertical and lateral, and three rotational motions-rolling, pitching and yawing caused by track irregularity, wheel and rail characteristic, dynamic behaviors etc. The rolling motion in vehicle mainly happens in cases of the vehicles stationary and running on canted track. When the vehicle positioned in stationary on canted track, vehicle is inclined toward inside of installed cant due to gravity component. When the vehicle has running on a track with cant deficiency, vehicle is inclined toward outside of installed cant due to centrifugal force. The roll coefficient(s) is defined as the ratio between the angle of inclination of the vehicle($\eta$) and the angle of the rail level($\alpha$). This paper has noted the test method, test result and analysis result to calculate the roll coefficient according to UIC505-5, international standard

  • PDF

A Study On Wear Pattern of Wheel Flange for Urban Railway Vehicle (도시철도 차량 차륜 플랜지의 마모패턴에 관한 연구)

  • Noh, Hang-Nak;Maeng, Hee-Young;Kwon, Seok-Jin
    • Proceedings of the KSR Conference
    • /
    • 2007.11a
    • /
    • pp.71-77
    • /
    • 2007
  • The surface of railway wheel tread in wheel-rail system can not be free from wear because of various circumstance such as railway condition, maintenance condition, weather condition, characteristics of wheel surface's geometrical shape, and vehicle suspension's structural characteristics etc. Therefore, the research on wear reduction and maintenance method are very important to ensure the safety of railway vehicle, to improve car comfort and to decrease maintenance cost. In this study, the wear rates of railway wheel have been periodically measured in terms of the running distance of Electrical Multiple Unit which have been currently operated and the microstructure transformation of wheel tread using replication method have been performed. The results show that the relations between the flange wear and tread microstructure are depended on running distance and it will supply basic data on wheel maintenance.

  • PDF

Rolling Stock Maintenance Scheduling for High-Sneed Railway (고속철도차량의 유지보수계획)

  • 김동희;홍순흠
    • Proceedings of the Safety Management and Science Conference
    • /
    • 2003.05a
    • /
    • pp.53-61
    • /
    • 2003
  • The process of railway traffic planning is composed of several steps such as long - term, mid - term, short - term, and real - time plan. The planning of vehicle and manpower resources is a main research topic in tactical short - term planning step Railway vehicle is usually consisted of a power car, passenger/freight cars and human resource is composed of engine driver, cabin crew, ground personnel. So far , power car was main research target in railway vehicle scheduling problem. Recently according as the light electric railway or high - speed railway is introduced, the operational planning of train set vehicles become important . In this paper , we introduce the conceptional model for trainset restoring problem and developed heuristic algorithm.

  • PDF

A Study on the Eigenmode Characteristics by Changing Damping Parameters of Secondary Suspension (Damper) on Railway Vehicles (철도차량 이차현가장치 댐퍼 매개변수 변화에 따른 고유모드 특성에 대한 연구)

  • Shin, Yu-Jeong;You, Won-Hee;Park, Joon-Hyuk;Hur, Hyun-Moo
    • Journal of the Korean Society for Precision Engineering
    • /
    • v.28 no.7
    • /
    • pp.796-804
    • /
    • 2011
  • Railway vehicles are capable of indicating several types of instability. This phenomenon, which is called hunting motion, is a self excited lateral oscillation that is caused by the running velocity of the vehicle and wheel frail interactive forces. The interactive forces act to change effectively the damping characteristics of railway vehicle systems. This paper will show the impact of instability on the transfer function behavior using damping characteristics of secondary suspension. The vehicle dynamics are modeled using a 17 degree of freedom considering linear wheel/rail contact. The paper deals with certain condition of the damper characteristics that one is about various damping coefficient and another is equipped damper direction.

Running Safety Analysis of Railway Vehicle passing through Curve depending on Rail Inclination Change (레일 경좌 변화에 따른 곡선부 통과열차의 주행안전성 해석)

  • Kim, Moon Ki;Eom, Beom Gyu;Lee, Hi Sung
    • Transactions of the Korean Society for Noise and Vibration Engineering
    • /
    • v.23 no.3
    • /
    • pp.199-208
    • /
    • 2013
  • So far today, there is a speed limit by the radius of curve based on operation regulation in domestic railway, however a study for the maximum running speed at the curved section without any derailment would be necessary. The two major factors related to the running safety of railway vehicle are classified as the railway vehicle condition and the track condition. In terms of the rail inclination among many other factors, the determination of rail inclination within the possible limit is necessary for the geometrical structure of the optimum track. The disregard of the geometrical parameter related to the rail inclination may cause a serious problem to the running safety of railway vehicle. This study is focusing on the analyzing of running safety regard to the change of rail inclination among the many other parameters to improve derailment safety, so that there is an affection analysis of the running safety regard to the change of rail inclination in the ideal and geometric track condition. Also There is an affection analysis of the running safety regard to the simultaneous change of rail inclination and the running speed at the curved section. According to analysis results of running safety, In case that the left and right rail inclination are 1/40, the running safety of this condition defined than other conditions. Also, the rail inclination of conventional lines is 1/40, Therefore, the railway vehicle passing through curve is safe when the railway vehicle runs in conventional lines.

Evaluation Method of the Transmission Loss for Railway Vehicle Structures. (철도차량 구조물의 TL 시험 평가 기법)

  • 김운경;김정태
    • Proceedings of the KSR Conference
    • /
    • 2001.05a
    • /
    • pp.155-161
    • /
    • 2001
  • In order to evaluate the sound transmission loss of a structure, a large reverberation room described by ISO is generally used. ISO test method is however for architectural structures, which is not properly implemented for small mechanical structures, such as rolling stocks. In this paper, evaluation procedure for railway vehicle structures has been proposed.

  • PDF