• Proceedings of the KIEE Conference
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• 2005.07d
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• pp.3081-3083
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• 2005

한국형 고속전철차량의 자동제어 구현을 위해서 우선 다양한 종류의 장치들로부터 상태정보(Line Voltage-열차가선전압, Bogie Hunting, Preset Speed, PWM, Train Velocity, Brake Pressure, Reservoir Pressure)를 취득해야하며, Main Process Unit(MPU)에서의 고속 Data 처리를 위해서 취득한 Analog Data를 신속하게 Digital Data로 변환해야 한다. 또한 열차내의 특수한 조건(Noise, Vibration)에서도 안정적인 데이터의 취득을 만족시켜야한다. 이와 같은 상황을 고려한 독자적이 통합형 데이터 취득 장치 -Integrated Data Acquisition Board(IDAB)-의 설계방안을 제시하였다.

• Proceedings of the KIEE Conference
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• 2008.11a
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• pp.282-284
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• 2008

전기철도차량을 개발하여 상업운행에 들어가기 전에 차량의 성능과 관련 있는 항목에 대한 여러 가져 성능시험을 수행해야 한다. 성능시험 항목 중에 하나가 전자파 시험이다. 전자파 시험은 차상에서 고조파와 전자파를 측정하는 시험과 차량에서 외부로 방사하는 전자파를 측정하는 시험, 차량에 전력을 공급하는 전철변전소에 유도되는 고조파를 측정하는 시험으로 구성된다. 본 논문에서는 한국형 고속열차를 대상으로 순차적으로 진행한 전자파 시험에 대한 결과를 종합적으로 정리하였다.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2001.05a
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• pp.1232-1240
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• 2001

In this study. a computer simulation of the Korean High Speed Prototype Test Train was performed to investigate the dynamic behavior(running stability. safety and comfort) in detail design process. The simulation model which was prepared by ADAMS/Rail V10.l consists of power car and middle car assembly (2 motorized cars ＋ 3 trailer cars). The nonlinear analysis takes into account the full vehicle model including wheel/rail contact and the influence of disturbed track. Throughout the dynamic calculation of KHST on the straight and the curved track. accelerations in car body. ride comforts and wheel rail forces were investigated.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2000.06a
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• pp.1360-1366
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• 2000

KHST project plans to design and to build an high speed train. There are noise requirements in passenger room for the standing and running train, which should be reached. Noise prognosises are calculated for the standing and running TM5(Motorized car) and TT4(Trailer car) train (v=300km/h) to find out critical areas in or around the train. On those areas, actions of noise reduction are proposed to reach the requirements. Finally noise prognosises are calculated for the higher velocity of v=350km/h.

• Journal of the Korean Society for Railway
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• v.5 no.3
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• pp.167-173
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• 2002

The influence of thermal stress at tread breaking in Korean High Speed Train wheel was investigated using the coupled thermal-mechanical analysis technique. The mechanical load or wheel-rail contract load and braking load were considered during FEM analysis. During the stop braking, the effect of mechanical stress on the combined stress is relatively larger than that of thermal stress in the rim of wheel. However, the effect of thermal stress is relatively larger than that of mechanical stress in the plate of wheel. When 300% of the block force was applied, the maximum von Mises stress of 61.0 MPa was found at the outside plate around 400 mm far away from the wheel center.

• Journal of the Korean Society for Railway
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• v.6 no.4
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• pp.286-293
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• 2003

The prototype of Korean high speed train (HSR350), composed of two power cars, two motorized cars and three trailer cars, has been designed, fabricated and tested. In this paper, the body vibration has been reviewed from the viewpoint of the vehicle's safety and the vibration limits for components and sub-assemblies mounted on the car-body using by the experimental method. And, the dynamic characteristics, such as jerk, natural mode and kinematic mode, have been reviewed. The KHST has been run to 300 km/h in the KTX line and the results of on-line test show that it has no problems in the vehicle's safety and the vibration limits. And the characteristics of body vibrations has been predicted at 350 km/h by fitting curve about the measured acceleration signals.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2003.05a
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• pp.549-554
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• 2003

Recently, the ride comfort problem becomes increasingly important because of today's needs for train speedup. The concept of ride comfort is equivocal. Generally, it is defined as the body vibration. The prototype of Korean high speed train (KHST), composed of two power cars, two motorized cars and three trailer cars, has been designed, fabricated and tested by the domestic researchers. In this paper, the ride comfort has been reviewed by the experimental method. The on-line test of KHST has been carried out up to 260km/h in the KTX line and proved that KHST has no problems from the viewpoint of the comfort ride at this speed. And the ride index lot KHST has been predicted at 300km/h and 350km/h by fitting curve.

• Journal of KSNVE
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• v.10 no.4
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• pp.636-641
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• 2000

KHST(Korea High Speed Train) project plans to design and to build an high speed train. There are noise requirements in passenger room for the standing and running condition, which should be reached. Predicted noise calculated for the standing and running TM5(Motorized car) and TT4(Trailer car) train (v=300 km/h and v=350 km/h) to find out critical areas in or around the train. From the estimation in DWA IfS, actions of noise reduction are proposed to reach the requirements. This paper takes the review of the calculated results in DWA IfS to propose a new design of inner wall.

• Proceedings of the KSR Conference
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• 2006.05b
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• pp.277-283
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• 2006

• Proceedings of the KIEE Conference
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• summer
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• pp.1442-1444
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• 2004

현재 한국형 고속전철은 시운전 시험 중에 있으며, 차량 내에 상시 계측시스템이 구성되어 있어서 차량의 전기장치 신호나 기계장치 신호를 획득하여 주행 및 제동에 관한 성능 및 특성을 분석하고 파악할 수 있다. 하지만 차량의 안전성, 승객의 승차감 확보와 궤도의 빠른 유지보수를 위해 궤도를 전문적으로 감시하고 검측하는 시스템은 구축되어 있지 않다. 그러므로 고속전철 차량에 설치되어 고속주행 중에 궤도를 종합적이고 효율적으로 측정하는 전문적인 계측시스템을 구성할 필요가 있다. 따라서 궤도틀림의 검측방법과 검측기구 및 그 원리를 이해하고 선진국의 궤도 검측기술을 파악하여 보았다.