Study on Anti-slip Control for Heavy-haul Locomotives under Complex Wheel/rail Friction Conditions

doi:10.3901/JME.2023.10.179

Abstract

Abstract: Wheel/rail adhesion is critical for the traction and braking operations of heavy-haul trains, especially under the low-adhesion contact conditions. To solve the problems of adhesion utilization affected by complex conditions of wheel/rail friction and traction load during heavy-haul trains operation, the heavy-haul train-track dynamics model was established, including heavy-haul train submodel, track submodel, the wheel/rail dynamic interaction model and anti-slip control model based on the optimal wheel/rail adhesion utilization. Based on this model, the wheel-rail rolling contact characteristics under complex wheel-rail friction conditions were analyzed, and the effects of different anti-slip control models on wheel-rail adhesion utilization were systematically compared and analyzed. The simulation results show that the friction conditions of wheel/rail have a significant influence on the dynamic interaction of wheel and rail under traction condition. Compared with the anti-slip control with constant creep rate threshold, the variable threshold control strategy can improve the longitudinal creep force and adhesion utilization ratio of the wheel and rail.

Key words: heavy-haul locomotive, wheel/rail adhesion, complex wheel/rail friction conditions, vehicle/track coupled dynamics, optimal threshold PID anti-slip control

CLC Number:

U211

CHEN Qinghua, YANG Yunfan, LING Liang, ZHANG Tao, WANG Kaiyun. Study on Anti-slip Control for Heavy-haul Locomotives under Complex Wheel/rail Friction Conditions[J]. Journal of Mechanical Engineering, 2023, 59(10): 179-186.

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