The invention discloses a variable-transmission-ratio electro-hydraulic coupling intelligent steering system of an electric motor coach. The variable-transmission-ratio electro-hydraulic coupling intelligent steering system comprises an environment sensing unit, an upper-layer controller, a lower-layer controller, a steering wheel, a steering column, an open-winding permanent magnet synchronous motor, a variable-transmission-ratio mechanism, a circulating ball type hydraulic pump, a steering rack, a steering tie rod, a steering gear, a piston and a hydraulic oil cylinder. The invention further discloses a steering control method which comprises a depth deterministic strategy gradient decision control method and a dual-source permanent magnet synchronous motor electro-hydraulic coupling steering system under a variable transmission ratio mechanism. According to the invention, a basis is provided for realizing L4-level automatic driving, the portability and the stability of the passenger car during high-speed and low-speed driving can be improved, hydraulic power-assisted steering and electric power-assisted steering are integrally controlled, and larger torque is provided for steering of the electric passenger car.

    本发明公开了一种电动客车可变传动比电液耦合智能转向系统,包括环境感知单元,上层控制器,下层控制器,方向盘,转向管柱,开绕组永磁同步电机,可变传动比机构,循环球式液压泵,转向齿条,转向横拉杆,转向齿轮,活塞,液压油缸。本发明还公开了转向控制方法,包括深度确定性策略梯度决策控制方法和可变传动比机构下的双源永磁同步电机电液耦合转向系统。本发明为实现L4级自动驾驶提供基础,既能改善客车在高低速行驶时的轻便性和稳定性,又有液压助力转向和电动助力转向集成控制,为电动客车的转向提供更大的力矩。


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    Title :

    Variable-transmission-ratio electro-hydraulic coupling intelligent steering system of electric motor coach and control method


    Additional title:

    电动客车可变传动比电液耦合智能转向系统及控制方法


    Contributors:
    FU ZHIJUN (author) / MA YINGKAI (author) / LU YAN (author) / ZHANG HUANJUN (author) / LIU XIAOHUAN (author) / RUKAIKAR SUBHASH (author) / ZHAO DENGFENG (author) / ZHOU FANG (author) / ZHAO FENG (author) / HE WENBIN (author)

    Publication date :

    2023-10-20


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    G05B Steuer- oder Regelsysteme allgemein , CONTROL OR REGULATING SYSTEMS IN GENERAL / B62D MOTOR VEHICLES , Motorfahrzeuge



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