The invention provides a new energy automobile stability control method and system. The method comprises steps that a front wheel rotating angle and the longitudinal speed of an automobile are obtained; a front wheel rotation angle and the longitudinal speed are inputted into a linear two-degree-of-freedom model of the automobile to generate an ideal value of a yaw velocity and an ideal value of aside slip angle; according to the RBF neural network algorithm, the ideal value and an actual value of the yaw velocity, and an ideal value and the actual value of the side slip angle, an uncertain interference item of the automobile is bounded. According to the ideal value of the yaw velocity, the actual value of the yaw velocity, the ideal value of the side slip angle, the actual value of the side slip angle and the bounded uncertain interference item, the total required yaw moment of the automobile is generated; the total required yawing moment is divided to each wheel, and the division result is outputted to a moment regulator. The method is advantaged in that the uncertain interference item of an automobile system can be bounded, the anti-interference capability of the automobile system is effectively improved, and stability of operation and driving of the automobile is ensured.

    本发明提供了一种新能源汽车稳定性控制方法及系统,方法包括:获取汽车的前轮转角及纵向速度;将前轮转角及纵向速度输入汽车的线性二自由度模型,生成横摆角速度的理想值及质心侧偏角的理想值;根据RBF神经网络算法,横摆角速度的理想值和横摆角速度的实际值,质心侧偏角的理想值和质心侧偏角的实际值,使汽车不确定干扰项有界;根据横摆角速度的理想值和横摆角速度的实际值,质心侧偏角的理想值和质心侧偏角的实际值,有界的不确定干扰项,生成汽车的总的需求横摆力矩;将总的需求横摆力矩划分给各个车轮,将划分结果输出到力矩调节器。本发明能够使汽车系统的不确定干扰项有界,有效提高了汽车系统的抗干扰能力,保证车辆的操纵及行驶的稳定性。


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    Title :

    New energy automobile stability control method and system


    Additional title:

    一种新能源汽车稳定性控制方法及系统


    Contributors:
    LIAO SHAOYI (author) / WANG PUXI (author) / XU YUJING (author)

    Publication date :

    2020-05-05


    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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