1F32 Forced steering control with estimated wheel wear(Vehicles-Rail/Wheel)

抄録

For high speed rolling stock, running times can be reduced by increasing the running speed of the train on curved portions of the track. To increase the curving performances with good ride comfort and reduced the chance of derailment, tilting and/or steering bogies have been developed. In this article, we are focusing on the active/ assist/ forced steering (link type steering) bogie. Actuators are used in the bogie to control the yaw angle as per the given set-point which is determined from the vehicle location on the track. In general, the desired steering or yaw angle is determined from local curve radius, cant height/ super-elevation, the velocity of the vehicle as well as the wheelbase. Existing control laws are formulated based on new wheel-rail interface assumption. However, as wheels and rails wear, the statically derived control law may not be optimal. Active steering avoids flange contact and in a vehicle equipped with active steering, most of the wheel wear takes place only in the tread portion. Here, we consider different depths of tread wear and the time-varying equivalent conicity is adapted into the steering control law. The influence of the wheel wear depth and the new adaptive control law on the dynamic behavior of the vehicle such as wheel lateral displacement, lateral creep force, critical and derailment speeds and ride comfort are evaluated using VI-Rail (ADAMS) multi-body dynamic (MBD) simulation software.