The invention discloses a subway train slipping prevention method based on gradient descent. The subway train slipping prevention method comprises the steps that S1, the train axle braking torque and the overall braking rate of a train body are measured; s2, determining an algorithm learning rate according to the creep rate; s3, iteratively controlling to approach the maximum braking rate according to the algorithm learning rate, the axle braking torque value and the acceleration value; and S4, according to the target braking rate and the iteration value, the corresponding braking torque is implemented, the target braking rate of the train is achieved or the target braking rate is converged to the extreme point, and therefore slipping is prevented. According to the invention, the brake torque of the axle and the brake rate of the train body are measured, and the brake rate of the train approaches the maximum brake rate which can be provided by a track in real time by using a gradient descent method, so that the train is prevented from slipping.

    本发明公开了一种基于梯度下降的地铁列车打滑预防方法,包括:步骤S1,测量列车轮轴制动扭矩和列车车体的整体制动率;步骤S2,根据蠕滑率确定算法学习率;步骤S3,根据算法学习率、轮轴制动扭矩值和加速度值,迭代控制逼近最大制动率;步骤S4,根据目标制动率和迭代值,实施相应的制动扭矩,达到列车的目标制动率或者收敛到极值点,从而预防打滑的发生。本发明通过测量轮轴制动扭矩和车体制动率,使用梯度下降的方法让列车的制动率实时逼近轨道所能提供的最大制动率,从而避免列车打滑的发生。


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    Title :

    Subway train slipping prevention method based on gradient descent


    Additional title:

    一种基于梯度下降的地铁列车打滑预防方法


    Contributors:
    WANG JUN (author) / ZHANG JIANGUO (author)

    Publication date :

    2024-10-25


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B61C Lokomotiven , LOCOMOTIVES / B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF



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