Design of the Active Steering Controller of Scaled Railway Vehicle Improving Curving Performance

This paper describes the design of the active steering controller of scaled railway vehicle to alleviate wheel/rail contact forces and to decrease wheel/rail wear. Active steering system of railway vehicles has proven its ability to bridge the gap between stability and curve friendliness. This system consists of two steering actuators, a steering controller, and various sensor systems to detect lateral displacement, vibration, track curvature, and so on. The control strategy is founded on motion of the wheel sets for lateral and yawing motions detected wheel/rail displacement. Running test results of 1/5 scaled active steering vehicle on the curved track show that the proposed active steering control system has good performance.