The invention relates to a vehicle body speed estimation method and a vehicle body speed estimation device. A vehicle body speed estimation method applied to a four-wheel drive vehicle includes: acquiring an estimated vehicle body speed on the basis of a wheel speed or a front-rear acceleration of the vehicle; determining whether or not an operation condition including at least the estimated vehicle body speed being higher than the operation determination speed is satisfied; when the operating condition is satisfied, a torque limit for reducing the torque of a part of the wheels of the vehicle is executed; determining whether or not an end condition is satisfied, the end condition including a state in which the estimated vehicle body speed is equal to or less than an end determination speed or a state in which the wheel acceleration of the part of wheels is greater than zero continues for a certain period of time; and terminating the torque limit when the termination condition is satisfied.

    本公开涉及车身速度推断方法和车身速度推断装置。本发明的应用于进行4轮驱动的车辆的车身速度推断方法包括:基于上述车辆的车轮速度或者前后加速度来取得推断车身速度;判定至少包括上述推断车身速度高于工作判定速度在内的工作条件是否成立;在上述工作条件成立的情况下,执行使上述车辆的一部分的车轮的扭矩降低的扭矩限制;判定包括上述推断车身速度变为结束判定速度以下、或者上述一部分的车轮的车轮加速度大于零的状态持续一定时间在内的结束条件是否成立;以及在上述结束条件成立的情况下,使上述扭矩限制结束。


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    Titel :

    Vehicle body speed estimation method and vehicle body speed estimation device


    Weitere Titelangaben:

    车身速度推断方法和车身速度推断装置


    Beteiligte:
    ASADA HIROSHI (Autor:in)

    Erscheinungsdatum :

    06.12.2022


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    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 / B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF



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