• Title, Summary, Keyword: Railway vehicle

Search Result 1,491, Processing Time 0.036 seconds

Dynamic Analysis of Railway Vehicle Using Mathematical Modeling of High-Speed EMU (분산형 고속전철의 34자유도 동역학적 모델링을 통한 철도차량의 동적 특성 해석)

  • Lee, Rae-Min;Lee, Pil-Ho;Lee, Sang-Won;Koo, Ja-Choon;Choi, Yeon-Sun
    • Proceedings of the KSR Conference
    • /
    • /
    • pp.1426-1434
    • /
    • 2008
  • This paper addresses the numerical study on the dynamics of the High-speed EMU to enhance the ride quality. The 17 and 34 degrees-of-freedom (DOF) dynamic models for a single railway vehicle are proposed, and its vibrational characteristics according to the nonuniform rail profile are analyzed via Matlab. The validity of the proposed 34-DOF model are verified by comparing its dynamic characteristics and those from ADAMS/Rail. In addition, the critical dynamic parameters are identified by the parametric analysis, and rough design variables to reduce the vibration level of the railway vehicle are proposed. Finally, the frequency analysis - FFT - are conducted to extract the resonant frequencies, which have a significant influence on the determination of the critical speed of the railway vehicle. It is demonstrated that the results from the Matlab-based numerical analysis of the 34-DOF dynamic model are similar to those from ADAMS/Rail.

  • PDF

Calculation of Maintenance Cost for RCM Analysis of Railway Vehicle (철도차량의 RCM 분석을 위한 유지보수비용 산출방안)

  • Lee, Chang-Hwan;Park, Byoung-Noh;Lim, Sung-Soo
    • Proceedings of the KSR Conference
    • /
    • /
    • pp.1481-1486
    • /
    • 2008
  • To apply more effective the RCM analysis for railway vehicle, the maintenance cost per equipment should be considered together with failure criticality per equipment considered in existing. This paper is described the systematic calculation of maintenance cost considering the RCM analysis of railway vehicle. To calculate the maintenance cost systematically, the cost breakdown structure was established, and basic cost information and calculated cost items were defined. In addition, the linking between calculated cost and RCM analysis was considered. In future, this proposal would be used to analysis of cost effectiveness through RCM analysis of railway vehicle.

  • PDF

Running Characteristics for On-Line Test of Railway Vehicle

  • Han, Young-Jae;Kim, Seog-Won;Seo, Sung-Il;Mok, Jin-Yong;Lee, Su-Gil;Kim, Young-Mo
    • 제어로봇시스템학회:학술대회논문집
    • /
    • /
    • pp.1347-1350
    • /
    • 2005
  • Recently, as the road capacity reaches a limit and environmental problems become serious, there exists a gradual increasing need for railway vehicles that are environment-friendly, punctual, reliable and safe. Accordingly, in addition to conventional railroad vehicles, lots of vehicles are being newly developed. Using the developed installed measurement system, the performance characteristics of railway vehicle could be monitored precisely. After recording the input real time data of each signal from railway vehicle to the network line, we could acquire the needed information through post processing program. We could verify the running performances of railway vehicle using this system. As a result, many latent defects have been found and corrected in the prototype train. The measurement systems have contributed to dramatic reduction of the developing period.

  • PDF

Comparative Study on Application of Korean Railway Safety Law and Urban Transit Safety Law to Urban Maglev Vehicle in Crashworthiness Regulations (도시형 자기부상열차에 대한 철도안전법과 도시철도안전법의 충돌안전기준 적용의 비교 연구)

  • Lee, Hyun-Cheol;Koo, Jeong-Seo
    • Proceedings of the KSR Conference
    • /
    • /
    • pp.748-754
    • /
    • 2008
  • This paper studied on the application of Korean Railway Safety Law and Urban Transit Safety Law in Crashworthiness Regulations to the urban maglev vehicle of KIMM. The crashworthiness regulations for urban transit vehicle should be satisfied to the urban maglev vehicles according to crash analysis results using the explicit finite element method. However, according to its numerical results, the crashworthiness regulations of Korean Railway Safety Law were partially satisfied except the coupling and shunting condition. When a commercial urban maglev vehicle is developed in the near future, the crashworthiness regulations of Korean Railway Safety Law should be considered and satisfied during its structural design stage in some details

  • PDF

A Study on Propulsion Control Device Characteristics of Small-scale Electric Railway Vehicle according to Driving Curve Tracking using Fuel Cell Generation System (연료전지 발전시스템을 이용한 축소형 철도차량의 운전곡선 추종에 따른 추진제어장치 특성 고찰)

  • Jung, No-Geon;Chang, Sang-Hoon;Kim, Jae-Moon
    • The Transactions of The Korean Institute of Electrical Engineers
    • /
    • v.64 no.12
    • /
    • pp.1804-1809
    • /
    • 2015
  • The study in railway system to apply a fuel cell system with high efficiency and mobility than other renewable energy is being actively conducted. It is needed a analysis on load characteristics and control method of rolling stock in order to apply to rolling stock. This paper presents study on control small-scale prototype power converter electric railway vehicle using fuel cell generation system. Experiment is conducted through real fuel cell generation system and reference speed applying the driving curve of the actual electric railway vehicle was applied. Also, output voltage of boost converter is controlled considering characteristic of fuel cell. And it was confirmed characteristic according to powering and regeneration of inverter.

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
    • /
    • /
    • 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

Scale Modeling Technique for the Crash Analysis of Railway Vehicle Structure (철도차량 충돌 해석을 위한 축소모델링 기법 연구)

  • 김범진;허승진
    • Journal of the Korean Society for Railway
    • /
    • v.5 no.4
    • /
    • pp.231-236
    • /
    • 2002
  • Todays, crash safety requirements of the railway vehicle structures become important design criterion according to the increased driving speed and the lightweight construction. Although the crash analysis using computer simulation can be effectively applied to predict the crash performance of the railway vehicles in the early design stage, the optimized design w.r.t the crash safety could be realized by the crash tests with actual prototype vehicles. However, it is very expensive and time-consuming task to perform the crash test of the railway vehicles. As a measure to cope with the problem, in this paper, the scale modeling technique is suggested and experimentally verified to predict the impact energy absorption characteristics of full scale model of aluminum extrusions sub-structures and the high-speed railway vehicle structure.

A Study on the Test Standards at Low Temperature of Rubber Suspension Components of Railway Vehicle (철도차량 고무 현가부품의 내한성 시험기준연구)

  • Yoon, Tae-Ho;Jang, Seung-Ho;Choi, Byoung-Il;Lee, Chan-Woo;Na, Hee-Seung
    • Proceedings of the KSME Conference
    • /
    • /
    • pp.372-376
    • /
    • 2004
  • In this paper, the standard test methods at low temperature of rubber suspension components of railway vehicle are investigated and reviewed. In order to connect the TKR(Trans-Korean Railway)-TSR(Trans-Siberian Railway), it is necessary to evaluate the performance of rubber suspenion components of railway vehicle. In the current Korean Standard, the test method at low temperature of railway vehilce components and the test method of rubber bellows of air spring are specified. But, the specified test temperature is higher than the the operating temperature of TSR railway. So, the in-depth research for the test method and performance evaluation technique of rubber suspension component at low temperature is necessary and current KS code should be adjusted.

  • 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
    • /
    • /
    • 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