Railway truck is necessary to have excellent curving performance as well as high speed hunting stability, but generally they are contrary to each other. In order to get the compatibility, many trucks with passive steering mechanism have been studied. In order to realize further improvement of bogie steering ability on curved track, active steering control can give effective performance. The truck treated here has simple but effective mechanism: Actuators are attached between the car-body and bogie frames. If the bogie frame is steered by actuators toward radial steering position, the curving performance of bogie can be improved. This is the concept of active-bogie-steering (ABS) truck. In this paper, more detailed study and evaluation for ABS truck will be presented. Validity tests were carried out with a half-vehicle model on rolling test stand in NTSEL, which can simulate curving condition. Bogie parameters and steering actuator characteristics are elaborately identified in order to compare the experimental results with multi-body dynamics simulation. Furthermore, hunting stability analysis is also conducted. According to the test results and numerical simulation, the effectiveness of the proposed bogie mechanism and control are proved.
Curving performance and hunting stability analysis of active-bogie-steering truck
Analyse der Laufeigenschaften aktiv gesteuerter Drehgestelle
2010
10 Seiten, 12 Bilder, 1 Tabelle, 6 Quellen
Aufsatz (Konferenz)
Englisch
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