A road slope calculation method comprises the steps of calculating an initial current rotating speed change rate according to the rotating speed of a driving motor and correcting the initial current rotating speed change rate to obtain a motor rotating speed change rate at the current moment, then calculating a rotating speed change difference value according to the motor rotating speed change rate at the current moment and the motor rotating speed change rate at the previous moment, and finally calculating a road slope according to the rotating speed change difference value. The gradient difference between the current moment and the previous moment is calculated, and finally the current gradient is calculated according to the gradient of the previous moment and the gradient difference between the current moment and the previous moment. According to the road slope calculation method, on the premise that hardware and extra cost are not increased, the rotating speed change rate is calculated through the rotating speed of the driving motor, the rotating speed change rate at the previous moment and the rotating speed change rate at the current moment are calculated in a composite mode, and the road slope is accurately obtained in real time; the accuracy in the dynamic change process of the vehicle driving state is high, and the vehicle is effectively prevented from sliding backwards.

    一种道路坡度计算方法,包括根据驱动电机转速计算初始当前转速变化率并对其修正,得到当前时刻电机转速变化率,随后根据当前时刻电机转速变化率和上一时刻电机转速变化率,计算转速率变化差值,随后根据转速率变化差值,计算当前时刻与上一时刻的坡度差,最后根据上一时刻的坡度和当前时刻与上一时刻的坡度差,计算出当前坡度。本发明的道路坡度计算方法在不增加硬件和额外成本的前提下,通过驱动电机的转速计算转速变化率并复合计算上一时刻的转速变化率和当前时刻的转速变化率,实时且准确地获取道路坡度,在车辆行驶状态动态变化过程中的准确度高,有效地防止车辆发生后溜。


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    Title :

    Road slope calculation method


    Additional title:

    一种道路坡度计算方法


    Contributors:
    TAN CHANGPING (author) / LI RUNDONG (author) / GAO TIANYI (author) / LIU FANG (author) / LUO YULIANG (author)

    Publication date :

    2022-11-01


    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 / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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