The invention relates to a method (100) for estimating a friction value for a vehicle (300a), in particular a commercial vehicle (300b), which can be driven by an electric drive (200), comprising the following steps: operating (110) wheels (270) of the vehicle (300a), in particular a commercial vehicle (300b), which are arranged on the ground (260), with a torque (T); ascertaining (120) a slip rate (S) of the wheel (270); applying (130) a temporally predetermined excitation torque (ET) to the wheel (270), the excitation torque (ET) being periodically applied (130) to the wheel (270) at a frequency (F); ascertaining (140) a slip rate change (DS) dependent on the excitation torque (ET), the ascertaining (140) of the slip rate change (DS) taking into account the frequency (F); and ascertaining (150) the friction value (MU) by means of the slip rate change (DS).
用于针对能通过电驱动装置(200)驱动的车辆(300a)、尤其是商用车辆(300b)进行摩擦值估计的方法(100),方法(100)具有以下步骤:以转矩(T)运行(110)车辆(300a)、尤其是商用车辆(300b)的布置在地面(260)上的车轮(270);获知(120)车轮(270)的滑移率(S);对车轮(270)加载(130)时间上预先确定的激励转矩(ET),其中,以某一频率(F)周期性地对车轮(270)加载(130)激励转矩(ET);获知(140)依赖于激励转矩(ET)的滑移率变化(DS),其中,对滑移率变化(DS)的获知(140)在考虑频率(F)的情况下进行;和借助滑移率变化(DS)来获知(150)摩擦值(MU)。
Method for estimating friction value, computer program, controller, vehicle, in particular commercial vehicle
用于摩擦值估计的方法、计算机程序、控制器、车辆、尤其是商用车辆
2024-12-27
Patent
Electronic Resource
Chinese
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 |
European Patent Office | 2025
|European Patent Office | 2025
|European Patent Office | 2025
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