The invention relates to a vehicle pitch angle calculation method, an automatic transmission, a device and a storage medium, and relates to the technical field. The front axle vertical displacement and the rear axle vertical displacement in the vehicle driving process are calculated according to the road surface information, the vehicle speed and the vehicle configuration information by using the vehicle dynamics model. And calculating the pitch angle of the vehicle according to the geometrical relationship between the vertical displacement of the front axle and the vertical displacement of the rear axle of the vehicle and the axle distance. Meanwhile, a three-axis acceleration sensor is used for measuring and calculating the pitch angle of the vehicle. And carrying out iterative fusion on the vehicle pitch angle calculated by the model and the vehicle pitch angle calculated by the three-axis acceleration sensor by using Kalman filtering to obtain an optimal value of the vehicle pitch angle. According to the method, iterative optimization can be continuously carried out on the pitch angle of the vehicle in the vehicle driving process, the optimal value is obtained, then the AMT control precision is improved, and the dynamic property, economical efficiency and comfort of the whole vehicle are improved.

    本发明涉及的一种车辆俯仰角计算方法、自动变速器、装置及存储介质,涉及技术领域。本发明利用汽车动力学模型根据路面信息、车速、车辆配置信息计算车辆行驶过程中前轴垂直位移和后轴垂直位移。进而根据车辆前轴垂直位移和后轴垂直位移与其轴距间的几何关系,计算得到车辆俯仰角。同时,使用三轴加速度传感器测算车辆俯仰角。使用卡尔曼滤波对模型计算得到的车辆俯仰角和三轴加速度传感器测算得到车辆俯仰角进行迭代融合,得到车辆俯仰角最优值。本方法可在车辆行驶过程中对车辆俯仰角不断进行迭代优化,获得最优值,进而提升AMT控制精度,提高整车动力性、经济性和舒适性。


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    Title :

    Vehicle pitch angle calculation method, automatic transmission, device and storage medium


    Additional title:

    一种车辆俯仰角计算方法、自动变速器、装置及存储介质


    Contributors:
    YAO XIAOFEI (author) / LAN HAILONG (author) / HAN WEI (author) / LI ZE (author) / REN HONGWEI (author) / ZAN SHOUBIAO (author) / YE JIN (author) / GUO BINGWEN (author) / HOU SIMIN (author)

    Publication date :

    2024-09-06


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion



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