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한국형 고속열차를 활용한 기존선 전철화 구간에서 고속열차 운행의 적합성 평가
목진용(Mok Jin-Yong),김영국(Kim Young-Guk),김기환(Kim Ki-Hwan),조민영(Cho Min-Young) 한국철도학회 2007 한국철도학회 학술발표대회논문집 Vol.- No.-
The KTX, which have opened the revenue service in April 2004, is operating in Kyoung-Bu high-speed line and electrified conventional Ho-Nam line, and the more the electrification are enlarged, the more the requirement of operating of high speed train would be increased. In this paper, the result of test run and evaluation on the suitability of operating high speed train in electrified conventional line between Dae-jeon and East Dae-gu was reviewed. Evaluation and analysis was executed in specific categories, such as operation & running performance of the train considering vibration characteristics based on UIC 518, ride comfort and current collection, and response sensitivity of ATS device for signalling from track facility. The result of this running test was evaluated and considered as a good practice for revenue operation of high speed train in electrified conventional line between Dae-jeon and Dae-gu.
한국형 틸팅열차의 틸팅 판토그래프 동특성 측정시스템 개발
목진용(Mok Jin Yong),김석원(Kim Seog Won),김영국(Kim Young Guk),김기환(Kim Ki Hwan) 한국철도학회 2007 한국철도학회 학술발표대회논문집 Vol.- No.-
The current collection system, pantograph, is one of the important subsystems in electric train system, because of it"s fatal function and role of supplying power to the train system. Generally, the function of current collection system is evaluated by loss of contact rate between pantograph and contact wire in catenary by measuring arcs, or by statistical method of evaluating minimum mean contact force. The Korean Tiling Train(TTX) has been manufactured by KRRI and Korean domestic companies and is preparing the trial running test of itself. In this paper, we introduce our successful achievement, measuring system and applied methods of dynamic characteristics for the tilting pantograph, developed of by our own technology.
목진용(Mok Jin Yong),김영국(Kim Young Guk),김석원(Kim Seog Won),박찬경(Park Chan Kyoung),김기환(Kim Ki Hwan) 한국철도학회 2008 한국철도학회 학술발표대회논문집 Vol.- No.-
To stop the train safely within the limited traveling distance and reduce its speed to the desired speed, it is necessary to guarantee the correct braking force. Presently, most trains have electric propulsion system and have adopted combined electrical and mechanical(friction) braking system. The friction coefficient between brake disc and pad is an important parameter in determining the mechanical braking force. In general, friction coefficient data of braking material have been taken through the dynamo-test in a laboratory. This study have suggested two methodologies that can measure friction coefficient of braking material on the train’s actual operating condition. The first is the direct method; measure the brake force and the clamping force applied on the mechanical brake by using strain gauges installed at the brake disk, and then calculate it. The second method is the indirect method; obtain the friction coefficient by using the train load and the equivalent brake force which is deducted the longitudinal force, such as resistance to motion, gradient resistance and curved resistance, from the inertia force applied to the train.
고속선 및 기존선에서 한국형 고속열차의 집전특성 분석 : 판토그라프-가선 간 접촉력 경향을 중심으로
목진용(Jin-Yong Mok),김영국(Young-Guk Kim),박춘수(Choon-Soo Park),김기환(Ki-Hwan Kim),이성호(Sung-Ho Lee) 한국철도학회 2004 한국철도학회 학술발표대회논문집 Vol.- No.-
The pantograph for Korean High Speed Train was developed and had been evaluating by through "G7-R&D project" for home grown high speed train technology. In this paper, from the point of view in mechanical aspect, comparison study on the current collection characteristics between the KHST pantograph and contact wire in catenary system on the High-Speed Line and Ho-Nam/Kyoung-Bu conventional lines is conducted. A measuring system for the performance and mechanical characteristics of the KHST pantograph is used for this study, which was developed and installed on the Proto-type Korean High Speed Train, and physical characteristics were measured while the KHST runs on the High-Speed Line and conventional lines. Through this study, remarkable variations of characteristics which can affect to a current collection quality of high-speed train are found and analyzed from measured mean contact forces in both tracks.
300㎞/h 이상 고속대역에서 한국형 고속열차의 집전특성 분석
목진용(Jin-Yong Mok),박춘수(Choon-Soo Park),김기환(Ki-Hwan Kim),김영국(Young-Guk Kim) 한국철도학회 2005 한국철도학회 학술발표대회논문집 Vol.- No.-
The Korean High Speed Train(KHST) had been developed and evaluating on the Kyoung-Bu High Speed Line by through "G7-R&D project“. In order to evaluate the function and characteristics of high speed train system, various experimental conditions have been considered and conducted. In this paper, current collection characteristics of KHST between pantograph and catenary system and dynamic behaviors are measured and analysed over 300 to 350㎞/h in running speed of KHST. A measuring system which was developed and installed on the Korean High Speed Train for the performance and mechanical characteristics of the KHST pantograph is used for this trial running test and we proofed that KHST has a remarkable and stable current collection characteristics as it had been designed.
시운전 시험을 통한 한국형 고속전철 차체진동 특성의 분석 및 평가
김영국(Young-Guk Kim),김석원(Seog-Won Kim),박찬경(Chan-Kyoung Park),김기환(Ki-Hwan Kim),목진용(Jin-Yong Mok) 한국철도학회 2003 철도저널 Vol.6 No.4
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.