• Journal of the Korean Society for Railway
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• v.7 no.2
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• pp.120-124
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• 2004

Computer aided simulation is an essential part in planning, design, and operation of railway systems. To determine the adequate performance and specification of railway system, it is necessary to calculate train performances such as distance, speed, power during train's running. This paper presents result of train performance simulation using the program that developed for Korea high speed train. To verify result of simulation, we have compared that with experiment data.

• Proceedings of the KSR Conference
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• 2011.05a
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• pp.671-679
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• 2011

Now, for the continuous location detection of train, The method which the moving distance and speed of vehicles are detected using an odometer mounted within railway vehicle, is used in railway domain generally. There are some problems that the train's positioning errors are accumulated as the moving distances increase. To solve this problems, The Train-borne Positioning System is being developed at Korea Railroad Research Institute. It is required to evaluate exactly a positioning performance of The Train-borne Positioning System for improvement of performance. Therefore, in this paper, we review the CDGPS methods to acquire reference position for performance evaluation of Train-borne Positioning System and verify the accuracy of the reference position through the static test and the vehicle test.

• Proceedings of the KSR Conference
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• 2010.06a
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• pp.1814-1820
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• 2010

Korean Train Express (KTX) has been commercially operating and achieving elevation on transport capacity since 2004. And the first hish-speed prototype test train, HSR-350x, was developed and succeeded in testing of running over 350km/h. Now KTX-II based on HSR-350x was started in service run. The new high-speed train development project, HEMU-400x project, has started since 2007. The protype train is being designed and manufactured. After the train are developed completely, it will run on the commercial line and will be test to verify the estimated performance. The authors devised the performance evaluation method and process of the HEMU-400x prototype system. And we introduce the definite performance test items and the method to vitrificate them in this paper.

• The Transactions of The Korean Institute of Electrical Engineers
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• v.62 no.12
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• pp.1777-1783
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• 2013

This study aims to implement an instrumentation system measuring and analysing real-time data of information flow between respective subunits composing train control system as the performance evaluation method for wireless communication based urban railway train control system under development for a Korean model. It analyses system functional requirements regarding subsystems composing wireless communication based train control system and test items for functions presented in each specification and examines data and measurement point for measuring according to test items in order to implement an instrumentation system. And, it clearly defines requirements of an instrumentation system to avoid malfunction or error in operation of train control system. It reviews data processing method and display method for effective analysis of data flow between respective subunits with measured data, designs and makes an instrumentation system. Ultimately, it applies to a performance test of train control system and makes sure an instrumentation system in normal working order.

• Proceedings of the KSR Conference
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• 2003.10c
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• pp.659-665
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• 2003

This paper presents a Train Communication Network simulator (TCNS) that can be used to evaluate the performance of TCN. TCN was accepted as the standard of the protocol for the communication network in trains. We carry out some simulation tests using the TCNS to show practical uses of the simulator. Results of some simulation tests are also reported. This paper presents a Train Communication Network simulator(TCNS) that can be used to evaluate the performance of TCN. TCN was accepted as the standard of the protocol for the communication network in trains. TCN of fieldbus was adopted as international standardization IEC 61375 in 1999. It has been operating on G7 train in korea. This paper developed TCNS(Train Communication Network simulator) as a simulator for performance evaluation. We can verify TCNS for preventing many kinds of occurring problems between the devices in data-communication. This study was developed TCNS as a simulator for the performance evaluation. We analyzed correlation between token, transmission data per paket and transmission speed of bus, through the TCNS, also analyzed result according to error rate of TCN. We carry out some simulation tests using the TCNS to show practical uses of the simulator. Results of some simulation tests are also reported.

• Proceedings of the KIEE Conference
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• 2000.07b
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• pp.1381-1383
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• 2000

A multi-train operation simulation software is under development, in this G7 Project for a High Speed Train System, to simulate the running performance, power consumption, signalling and operation. In the first stage, a Train Performance Simulation (TPS) software is introduced in this paper. This is a core module of whole system and gives some parameters of a train, e.g., its position, speed traction and braking power and electric power system state, etc. In this paper, calculation technique was used for voltage drop at the train's positions and major posts along the catenary line. The final program will be used as an evaluation tool for system performance in constructing a new line or introducing a new train system.

• Proceedings of the KSR Conference
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• 2011.05a
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• pp.1118-1123
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• 2011

The introduction of high speed railway(KTX) in Korea after the Korean high speed train through the KTX-II of the development is being run is made. Thus the demand for the railway technology advances and high performance, Korean government promoted the development of the next-generation high speed train system(HEMU-400X). In addition to the production of train system essential element of the train through an on-line test is to evaluate the performance. Through the on-line test of the train in order to evaluate the performance test items should be selected first and need to the test procedures are required. In addition, an Overall Measuring System(OMS) to measure the performance of the train system should be established. In this study for the on-line test of the HEMU-400X test items was selected for detailed measurements and performance evaluation of a comprehensive and efficient trains to test an OMS for the development are discussed.

• Journal of the Korean Society for Railway
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• v.14 no.6
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• pp.484-488
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• 2011

Technologically advanced railway countries had a unique ability to design, test and evaluation systems for development of High-speed train system. To evaluate the performance of the train system in Korea for the development of advanced measurement technology and systems are needed. In this study, the Overall Measuring System(OMS) is going to be established to efficiently verify the performance, stability and reliability of the train system and the components, and verify of the maximum speed though an on-line test. OMS consist of vehicle measuring system, pantograph measuring system, video monitoring system and monitoring room was constructed for the overall measuring system and monitoring system. The results of this study were expected to contribute to technical improvement for evaluation of train system.

• The Transactions of the Korean Institute of Electrical Engineers A
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• v.48 no.12
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• pp.1580-1588
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• 1999

This paper evaluates the real-time performance of the Train Communication Network (TCN) that consists of WTB and MVB. A run-time scheduling algorithm for the hard-real time communication was proposed and its performance was evaluated. Also, a new addressing method and the adaptive tree algorithm were suggested to enhance performance. The overall performance was evaluated by computer simulation using Arena.

• Journal of the Korean Society for Railway
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• v.6 no.2
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• pp.94-99
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• 2003

The pantograph for Korean High Speed Train was developed by home-grown technology. In this study, test and evaluation of the current collection performance of the pantograph is conducted. For this purpose, a measuring system is developed and installed on the prototype high speed train. Measurement is conducted while the train runs on the test track. The measuring system is composed of video monitoring system and telemetry ＆ data processing system. It monitors the hazard behavior of the pantograph and measures acceleration and vertical force of the pan head. By applying the measuring system, accurate evaluation of the performance of the pantograph and safety assessment of the interface system of pantograph and catenary is facilitated.