Anti-slip Control of High-speed Trains Assisted by Electromagnetic Actuators

doi:10.3901/JME.2025.22.143

Abstract

Abstract: The operation efficiency and the anti-slip control are critical issues of high-speed trains with the maximum vehicle speed is increased and the operation scenarios are diversified. The existing anti-slip control strategies tend to avoid wheel slippage by reducing the traction/braking torque, which results in a decrease of traction/braking capacity. Electromagnetic actuators, such as linear eddy current brakes and boosters, can induce vertical/longitudinal electromagnetic forces with the rail and are often equipped in the next generation trains to improve traction/braking capacity. In order to improve the traction/braking efficiency while solving the problem of wheel slippage, the electromagnetic actuator-assisted anti-slip control algorithm is proposed, in which the electromagnetic actuators is used to assist traction/braking on the basis of the optimal adhesion control. Based on the theory of vehicle-track coupled dynamics theory, the high-speed train-track coupled dynamics model equipped with electromagnetic actuators is established. The effects of this control strategy on the traction/braking performance and the wheel/rail dynamic interactions of high-speed trains under complex contact conditions are simulated and discussed. The results show that the proposed control strategy can remain the longitudinal creepage around the optimal control threshold, the electromagnetic actuators can increase the wheel/rail vertical force and thus improve the wheel/rail adhesion performance, and the non-adhesive longitudinal braking force can be provided under the braking condition. The maximum adhesion utilization is ensured and the traction/braking force is improved at the same time. Compared with the traditional anti-slip control methods, the electromagnetic actuator-assisted anti-slip control strategy can effectively improve the traction/braking performance of high-speed trains under low adhesion contact conditions.

Key words: high-speed train, electromagnetic actuator, anti-slip control, vehicle-track coupled dynamics, traction/braking

CLC Number:

U271

MIAO Yuhao, LING Liang, ZHANG Heng, ZHAI Wanming. Anti-slip Control of High-speed Trains Assisted by Electromagnetic Actuators[J]. Journal of Mechanical Engineering, 2025, 61(22): 143-154.

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