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http://dx.doi.org/10.5762/KAIS.2018.19.12.887

Analysis of braking characteristics of electric multiple unit for train control system  

Choi, Don Bum (Korea Railroad Research Institute)
Oh, Sehchan (Korea Railroad Research Institute)
Kim, Min-Soo (Korea Railroad Research Institute)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.19, no.12, 2018 , pp. 887-895 More about this Journal
Abstract
This paper presents a braking model that can be used to design the safety distance of a train control system and a train braking system to increase the volume of traffic. For the braking model, a train set (electric multiple unit composed 6 cars) was tested. The factors that can affect the braking characteristics include the friction coefficient, braking pressure, and regenerative braking. The braking pressure was classified into service and emergency braking and reflected the characteristics of the vehicle. The external force acting on the running railway car was tested in accordance with KS R 9217, and the running resistance of the train is presented in the form of a polynomial. The dynamic behavior of the train running on a straight flat line was simulated using UM 8.3. The results were validated with experimental data, and the results were reasonable. With the validated model, a stopping distance was determined according to the initial braking speed and compared with the deceleration braking model. In addition, a safety distance for the train control system could be changed according to the frictional coefficient limits. These results are expected to be useful for analyzing the dynamic behavior of trains, and for analyzing various railway environments and improving the braking performance.
Keywords
brake equipment; dynamic behavior; electric multiple unit; railway vehicle; running resistance;
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Times Cited By KSCI : 2  (Citation Analysis)
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