The invention discloses a method and device for determining an automobile adhesion coefficient, and the method comprises the steps: obtaining a tire slip rate, a tire longitudinal parameter and a tire lateral parameter of a vehicle in a driving process; on the basis of the longitudinal adhesion coefficient estimation activation mark and the driving state parameters of the vehicle in the driving process, the adhesion coefficient corresponding to each wheel of the vehicle is determined, and the longitudinal road surface type adhesion coefficient is determined on the basis of the tire slip rate; fusing the adhesion coefficient corresponding to each wheel and the adhesion coefficient threshold value corresponding to the longitudinal road surface type adhesion coefficient to obtain a longitudinal adhesion coefficient corresponding to each wheel; based on the lateral attachment coefficient estimation activation mark and the driving state parameters of the vehicle in the driving process, determining lateral attachment coefficients corresponding to wheels on the two sides of the vehicle; and fusing the longitudinal adhesion coefficient and the lateral adhesion coefficient to obtain a target adhesion coefficient corresponding to each wheel of the vehicle. As a result, the road adhesion coefficient of each wheel can be identified.
本发明公开了一种汽车附着系数的确定方法及装置,其中,该方法包括:获取车辆在行驶过程中的轮胎滑移率、轮胎纵向参数及轮胎侧向参数;基于纵向附着系数估计激活标志及车辆在行驶过程中的行驶状态参数,确定车辆的各个车轮对应的附着系数,并基于轮胎滑移率确定纵向路面类型附着系数;对各个车轮对应的附着系数及纵向路面类型附着系数对应的附着系数门限值进行融合,得到各个车轮对应的纵向附着系数;基于侧向附着系数估计激活标志以及车辆在行驶过程中的行驶状态参数,确定车辆的两侧车轮对应的侧向附着系数;对纵向附着系数及侧向附着系数进行融合,得到车辆的各个车轮对应的目标附着系数。由此,能够识别各个车轮的路面附着系数。
Method and device for determining adhesion coefficient of automobile
汽车附着系数的确定方法及装置
2024-02-06
Patent
Elektronische Ressource
Chinesisch
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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