A study of active steering strategies for railway bogie

This paper presents a fundamental study of active steering for a railway bogie and is focussed on the development of control strategies to provide a perfect curving performance. A number of active steering strategies are considered. One is to control the wheelset and the bogie to follow desired yaw movements on curves; the second is to control the lateral motion of the wheelset to take the pure rolling line; the third is to control the actuators such that low frequency zero force in the primary suspensions is achieved; and finally a control method using relative motions between the two wheelsets is also investigated to improvement of the performance robustness against parameter variations. A comprehensive assessment of the steering strategies is carried out.