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Vehicle, Japan

Watanabe N.,Eunning Gear Laboratory | Maki Y.,Eunning Gear Laboratory | Shimomura T.,Vehicle Dynamics Laboratory | Tohtake T.,Vehicle Dynamics Laboratory | Morishita H.,Eunning Gear Laboratory
Quarterly Report of RTRI (Railway Technical Research Institute) (Japan)

Bench tests for existing railcars are effective for measuring their dynamic performance. However, to date it has not possible to duplicate the actual running conditions of one car to a multiple car train consist. This paper explains the development of a hardware-in-the-loop simulation (HILS) system composed of an actual car, a distributed real-time simulator, a real-time network and car end simulators that simulate the dynamic behavior of the end surfaces of adjacent car bodies. This report introduces the HILS system and shows the results of shaking tests on the actual car used to reproduce the running conditions of a three-car train in the HILS system. Source

Sugahara Y.,Vehicle Noise and Vibration Laboratory | Watanabe N.,Eunning Gear Laboratory | Takigami T.,Vehicle Noise and Vibration Laboratory | Koganei R.,Vehicle Noise and Vibration Laboratory
Quarterly Report of RTRI (Railway Technical Research Institute) (Japan)

Suppression of vertical bending vibration is essential to improve ride comfort on railway vehicles. For this purpose, a primary suspension damping force control system is being developed. This paper describes the composition of the system and reports on the results from vehicle running tests on some Shinkansen lines using actual Shinkansen vehicles fitted with the developed variable primary vertical dampers. The results of these tests demonstrate that this system is effective in reducing vertical vibration acceleration in the first bending mode of the car body and improves ride comfort. In addition, a progress report is also given on its ongoing development. Source

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