• Title/Summary/Keyword: the light rail transit system

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Speed Limitations of the Rubber-Tired AGT Light Rail Vehicle for Inclement Weather (악천후에 대한 고무차륜 AGT 경량전철의 안전 운행속도)

  • 김연수;박성혁;백남욱
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2003.06a
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    • pp.1533-1536
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    • 2003
  • Dynamic model of the rubber-tired AGT light rail vehicle. various load and boundary conditions between vehicle and infrastructures(running track. guidance rail) were defined to analyze vehicular dynamic behaviors occurred by inclement weather(strong wind and earthquake). The dynamic analysis were performed by using a commercialized software RecurDyn. whose results for the magnitudes of wind and earthquake showed the resultant forces and accelerations between car body and bogie, or bogie guidance frame and infrastructures in the various track conditions(straight or curved tracks) and train velocities. Based on these results, speed limitation of tile vehicle were proposed to ensure system stability and passengers safety.

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A Research Plan on the Application of Systems Engineering to Light Rail Transit Project (경량전철사업 시스템엔지니어링 적용기술 개발 전략)

  • Han, Seok-Youn;Choie, Yo-Chel;Park, Ki-Jun;Lee, Ahn-Ho
    • Proceedings of the KSR Conference
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    • 2011.05a
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    • pp.1604-1611
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    • 2011
  • Light Rail Transit(LRT) is a large scale complex system which combines rolling stocks, power supply, signal communication, tracks & stations, and hundreds of billions of wons per project are spent for construction. Therefore efficient integration of sub-systems is very important. The systems engineering is a good method to reduce the cost and risk of LRT project. In this paper, we introduce a research plan on the application of systems engineering to LRT project. We, Korea Railroad Research Institute(KRRI), launched a research program with 4 companies, which is support by the governmen and project period is 4.5 years. Main research topic is to develop the technology for the application of systems engineering technical process to LRT project based on ISO/IEC 15288.

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Development and Application of Digital D.C Protection Relay for the test line of Light Rail Transit (경량전철 시험선로의 디지털 직류보호제어장치 개발 및 적용)

  • JEON Y.J.;KIM S.N.;KIM J.H.;BAEK B.S.;LEE H.D.
    • Proceedings of the KIEE Conference
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    • summer
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    • pp.1373-1375
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    • 2004
  • This paper presents the design of DC protection Relay for Light Rail Transit system, which is very beginning product in domestic. Protection Function characteristic, principle and I/O interface including interlock signal has been introduced. The protection algorithm and EMC characteristics have been certified by official organization and Type test report has been introduced. Up to date in domestic, the test procedure for DC Protection relay hasn't been established so the new method and test equipment based on IEC regulations are proposed. Finally the product will be proved based on field test.

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A Study on Emergency Response Plan for Manless Light Rail Transit(LRT) (무인 경량전철 운영을 위한 비상대응 계획 수립에 관한 연구)

  • Park, Min-Kyu;Shin, Jong-Hyun;Kim, Yeon-Woong
    • Proceedings of the KSR Conference
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    • 2011.10a
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    • pp.915-923
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    • 2011
  • Our country is promoting the introduction of new means of transportation due to insufficient supply according to the existing demand of road traffic. Among them, manless light railroad transit is settled down as the most definite alternative. However, new traffic systems such as manless light railroad have certain difference between characteristics of hardware and software and subway system. Therefore, there will be many differences compared to the existing contingency system when accidents occur. Railway management organization has to establish railway contingency plan and acquire permission from the minister of the Ministry of Land, Transport, and Maritime Affairs. However, as commercial transportation is available, a new traffic system also should establish contingency plan. Therefore, the establishment of systematic contingency plan is suggested in order to analyze characteristics of manless light railroad in the beginning of introduction and to make contingency response available.

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Functional System Analysis of On Board Control Unit for VAL 208 Light Rail Train on Uijeongbu City (의정부경전철 VAL208 차상열차제어장치의 시스템 인터페이스 기능분석)

  • Yang, Doh-Chul;Park, Dong-Hoon;Hwang, Ja-Ho
    • Proceedings of the KSR Conference
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    • 2011.10a
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    • pp.2718-2725
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    • 2011
  • The VAL 208 in Uijeongbu Light Rail system is a light railway vehicle which could be operated in driverless supported by Siemens. It is a Rubber Wheel Type AGT (Automatic Guideway Transit). It will be operated in two car train about 11km of Uijeongbu line. In this paper, the technical overview of the ATC system and the interface between the system and the way side control equipments are presented. It includes the main functions of OBCU(On Board control Unit) and its information sharing method with WCU(Way side control Unit). The testing procedure of OBCU is also discussed.

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Carbody basic design for rubber tired AGT (고무차륜 경량전철의 차체 기본설계)

  • 이호용;홍재성;정종덕;이관섭
    • Journal of the Korean Society for Railway
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    • v.3 no.3
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    • pp.161-169
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    • 2000
  • AGT(Automated Guide-way Transit System) was introduced to satisfy the every increasing need for improved urban transportation. The AGT system is classified as medium distance and demand capacity mass transit being introduced for such area with inadequate passenger demand for railway construction but excessive demand for bus service. To decrease initial investment cost it is important that we have to secure the technology system of Light Rail Transit for Korea environment. By utilizing the finite element analysis, the result in this paper is enough to satisfy the strength whish is required. Also for the purpose of safety, it is decided the thickness and frame structure of the undeframe section through the analysis. It is known that carbody is no problem for required design conditions.

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A study on the power rail be of application to MAGLEV with middle-low speed (중저속 자기부상열차에 적용 가능한 급전레일에 대한 검토)

  • Ahn, Young-Hoon;No, Seong-Chan;Kang, Seung-Wook;Hyun, Chung-Il
    • Proceedings of the KSR Conference
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    • 2007.11a
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    • pp.1451-1455
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    • 2007
  • MAGLEV(Magnetic Levitation) with Middle-low speed be classified as a kind of LRT(Light Rail Transit) in KOREA. Also this vehicle has adopted LIM propulsion method. The MAGLEV has adopted LIM type in operational or developing model in the world. The power rail of LIM is very similar with the 3th rail of LRT in the functional property but the structure and shape of power rail is different with that. WE have to search the optimal power rail system for Korean MAGLEV vehicle. In this paper, we suggest the conceptual design and direction of design for power rail of Korean MAGLEV developing.

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Construct Test Line of Light Rail Transit for Overall Test and Commissioning (경량전철 기술개발 종합시험을 위한 시험선로 건설 사례)

  • Lee, An-Ho;Lee, Duck-Young
    • Proceedings of the KSR Conference
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    • 2004.06a
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    • pp.1118-1123
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    • 2004
  • Launched in 1999 and funded by the Korean government, the R&D project of developing the. light train system technology is finally wrapped up to produce its prototype train prototype and all the research activities on signal, communication, power supply third rail Type and infra-structure have been completed. In an attempt to verify the usability of the system through an actual testing and as a preliminary step to the application of the system to overall light train construction projects to be implemented in different cities in Korea, testing lines are under construction now. Here we'd like to introduce people to the general overview of the test line construction and interface found in the process of project.

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Structural analysis of Rubber Tired AGT (고무차륜 경량전철의 구조강도 해석 연구)

  • 구정서;한형석;송달호
    • Proceedings of the KSR Conference
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    • 2001.05a
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    • pp.193-199
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    • 2001
  • In this study, the carbody design of the rubber tired AGT(Automated Guide-way Transit System) under development by KRRI was numerically analysed to evaluate its structural strength according to the standard specifications for Korean LRT (Light Rail Transit). The numerical results showed that the detail design of the carbody was strong enough to satisfy the specifications with respect to the axial compression strength, the vertical strength and the vertical stiffness(natural frequency). However, the carbody design had some problems on the fatigue strength by twist loadings. So, it was recommended that the carbody design should be modified to improve the twisting strength by reinforcing the front end structures.

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A study on the Development of Systems Engineering Application Model for LRT based on MBSE (전산도구 기반의 경량전철사업 시스템엔지니어링 적용모델 SELRT 개발)

  • Han, Seok Youn;Kim, Joo Uk;Choi, Yo Cheol
    • Journal of the Korean Society of Systems Engineering
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    • v.8 no.1
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    • pp.9-19
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    • 2012
  • The Light Rail Transit Project is a large scaled project which takes several years in building a system. After construction, LRT system is operating for several tens of years. For these characteristics, the right application of systems engineering to LRT project greatly effects the project success. In this paper, we present systems engineering application model to LRT project i.e. SELRT which include systems engineering technical process, core technology management process, project support process. SELRT also has a module for the exchange of outputs in SE tool and PM tool. Systems engineering processes in SELRT mainly base on ISO/IEC 15288. In future, we expand the range of SE processes and improve the usability in SELRT. We expect that this model will contribute to improve the efficiency in LRT project and to success the LRT project.