The invention provides a train braking anti-skid control method and system based on vehicle wheel rail adhesion characteristics. The method comprises the steps that vehicle speed information and slip rate information of a target train in the braking process are obtained in real time; according to a preset flexibility coefficient, the vehicle speed information and the wheel rail friction coefficient, a dry rail adhesion coefficient and a wet rail adhesion coefficient are obtained; obtaining the sliding work and the instantaneous sliding power generated in the braking process of the target train, and calculating the sliding power according to the dry rail adhesion coefficient, the wet rail adhesion coefficient, the sliding work and the instantaneous sliding power, obtaining a first peak adhesion coefficient and a second peak adhesion coefficient corresponding to the adhesion coefficient-slip rate curve when the target train has a large slip condition in the braking process; and according to the slip rates corresponding to the first peak adhesion coefficient and the second peak adhesion coefficient, anti-slip control adjustment is conducted on the braking process of the target train. The train braking distance is shortened, and the train braking performance is improved.
本发明提供一种基于车辆轮轨黏着特性的列车制动防滑控制方法及系统,该方法包括:实时获取目标列车在制动过程中的车辆速度信息和滑移率信息;根据预设柔度系数、车辆速度信息和轮轨摩擦系数,分别获取干轨黏着系数和湿轨黏着系数;获取目标列车在制动过程中产生的滑动功和瞬时滑动功率,并根据干轨黏着系数、湿轨黏着系数、滑动功和瞬时滑动功率,得到目标列车在制动过程中发生大滑移情况时黏着系数‑滑移率曲线对应的第一峰值黏着系数和第二峰值黏着系数;根据第一峰值黏着系数和第二峰值黏着系数对应的滑移率,对目标列车的制动过程进行防滑控制调整。本发明缩短了列车制动距离,提高了列车制动性能。
Train braking anti-skid control method and system based on vehicle wheel rail adhesion characteristics
基于车辆轮轨黏着特性的列车制动防滑控制方法及系统
2024-11-15
Patent
Electronic Resource
Chinese
IPC: | B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF |
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