The invention discloses a stability control method for a high-speed distributed electric vehicle. The stability control method comprises the following steps that a model prediction stability controller calculates a total driving/braking torque and a front wheel steering angle compensation value; calculating a driver front wheel steering angle input value and a model prediction stability control front wheel steering angle weight; carrying out tire torque optimal distribution; and a driver is assisted in vehicle control. A flattening system is constructed based on a three-degree-of-freedom vehicle dynamics model, a model prediction stability controller is designed, the purpose of improving the safety and stability of the high-speed distributed electric vehicle is achieved, longitudinal and transverse control is comprehensively considered based on the differential flattening theory and the model prediction control theory at the same time, and the stability of the high-speed distributed electric vehicle is improved. The control quality is improved, reasonable use of tire force is guaranteed, and the stability and safety of the vehicle are improved; according to the method, the dimensionality of the optimization solution space of the model prediction stability controller is reduced, and the calculation efficiency of the model prediction stability controller is greatly improved.

    本发明公开了一种高速分布式电动汽车稳定性控制方法,包括以下步骤:模型预测稳定性控制器计算总驱/制力矩和前轮转角补偿值;计算驾驶员前轮转角输入值和模型预测稳定性控制前轮转角权重;进行轮胎力矩优化分配;辅助驾驶员进行车辆控制。本发明基于三自由度车辆动力学模型构建的一种平坦化系统,设计了模型预测稳定性控制器,以提升高速分布式电动汽车安全性和稳定性为目标,基于微分平坦理论和模型预测控制理论同时对纵横向控制进行综合考虑,使得控制品质提升,保证了轮胎力的合理使用,提升了车辆的稳定性和安全性;本发明降低了模型预测稳定性控制器优化求解空间的维数,给模型预测稳定性控制器带来了计算效率的大幅度提升。


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    Title :

    High-speed distributed electric vehicle stability control method


    Additional title:

    一种高速分布式电动汽车稳定性控制方法


    Contributors:
    MA HUI (author) / GUO LIE (author) / GUAN LONGXIN (author) / GUO PENGYUAN (author) / YUE MING (author)

    Publication date :

    2024-07-09


    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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