抄録
This report presents some illustrations on practical use of the car-vibration analyzing system developed for the maintenance of riding quality. This analyzing system was applied experimentally to the long-term endurance test of Shinkansen test of Shinkansen electric cars at the speed of 240 km/h. As a result, it was confirmed that this system was available for practical sue both in research work and maintenance. Further, the following matters were made clear. (1) Riding quality level LT on the Tohoku Shinkansen at 240 km/h speeds is evaluated to be in the range of "Good". (2) The riding quality of each car of a train varies by the coupled position in the train. (3) The LT of vertical vibration does not increase with the extension of running distance. (4) The LT of lateral vibration increase 2∼3 dB in the running distance of 300000 km until truck overhauling.
