To enable forced steering along a curved track, regarding an axle having axle support rigidity suitable for the stability of high-speed travel.
Regarding an axle box support device mounted on each of both ends of a pair of axles 3a and 3b laid in the lengthwise direction of a tuck underframe 2, the lengthwise and breadthwise support rigidity of the device is selected at a value suitable for high-speed travel. Furthermore, forced steering mechanisms 6a and 6b using actuators are installed in parallel with the device, so that a yaw angle corresponding to a yaw angle instruction value is applied to each of the axles 3a and 3b during the travel of a rolling stock along a curved track. Also, forced steering control means 10a and 10b are installed, so that a yaw angle instruction value corresponding to the curved track is applied to the forced steering mechanisms 6a and 6b.
HIROTSU TETSUJI
ISHIDA SHUJI
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