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Railway Technical Research Institute (RTRI)

Railway Technical Research Institute (RTRI)




The Railway Technical Research Institute developed a new master plan “RESEARCH 2025” for the five years from 2020 to 2024 as a concrete plan to fulfill RTRI’s vision “We will develop innovative technologies to enhance the rail mode so that railways can contribute to the creation of a happier society” and has been addressing research and development and other activities.

We have four objectives of research and development, that is, safety improvements, cost reduction, harmony with the environment, and improved convenience and three pillars of the research activities, research and development for the future of railways, development of practical technologies meeting the needs of railway operators, and basic research for railways.

Among the research projects for safety, we will establish measures to reduce the downtime in railway systems in the case of heavy rain and strong wind, by making optimal decisions to suspend and resume operations, based on results of meteorological disasters risk assessments. We will also establish methods of rapid and appropriate repair works. We will also promote digitalization of railways, implement research and development for labor and energy saving and speed increase, and innovate railway systems.

In order to make sure that railways will keep contributing to the development of our society, economy and living environment, RTRI will conduct research from the railway customers' viewpoint, keep close cooperation with the national government, railway operators and suppliers, and continue innovative research and development.




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16 July 2021


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Mr. Daisuke Hijikata, Railway Technical Research Institute (RTRI), JAPAN

Verification using simulation is actively used in the performance evaluation of the Wheel Slide Protection (WSP) system of railway vehicles. This is because low adhesion conditions are required to evaluate the performance of the WSP system, and the simulation can effectively reproduce intentional low adhesion conditions. The importance of performance evaluation with the track tests remains unchanged as the final step of verification procedures, but the effect of reducing the number of costly and laborious tests is significant.

However, this method is based on the premise that the simulation always performs the same stable operation, and there has been no discussion about the uncertainty such as variation and deterioration of the performance of real vehicles. If these uncertainties can be taken into consideration, it should lead to a more detailed evaluation of the WSP performance.

Therefore, in this study, we introduced some influential factors into the simulation and comprehended the influence of these changes on the WSP performance. In addition, we defined the strength of the influence of each influential factor as the degree of influence and compared these. This makes possible to obtain knowledge on how the WSP performance changes according to the given conditions.

By utilizing this study, the research and development of the WSP system would be streamlined, and it would contribute to the improvement of the safety and reliability of railway vehicles.

EuroBrake 2021




Performance Evaluation for Wheel Slide Protection System with Factor Analysis in Simulation, EB2021-STP-019, EuroBrake 2021

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