The invention relates to a method for determining a tire longitudinal stiffness (Kx) of at least one wheel (1) of a motor vehicle (2) during operation of the motor vehicle (2), the method comprises the following steps: generating, in at least one wheel (1), a sinusoidal modulation for sinusoidal excitation of a wheel speed (omega) for an axle drive torque or a wheel drive torque required to maintain a current vehicle speed (v) or a braking torque or a regenerative torque required to maintain a current braking power, whereby a sinusoidal wheel speed fluctuation is induced; and-detecting the resulting sinusoidal wheel speed fluctuations, and-determining the amplitude ([omega] amp) from the detected wheel speed fluctuations thus induced, and-ascertaining the tire longitudinal stiffness (Kx) as a function of the amplitude ([omega] amp). The invention also relates to a device and a vehicle.
本发明涉及一种用于获知在机动车(2)运行期间机动车(2)的至少一个车轮(1)的轮胎纵向刚度(Kx)的方法,该方法包括以下步骤:‑在至少一个车轮(1)中对维持当前的车速(v)所需的车桥驱动力矩或车轮驱动力矩或对维持当前的制动功率所需的制动力矩或再生力矩产生用于正弦激励车轮转速(ω)的正弦调制,由此诱发正弦的车轮转速波动,并且‑检测到所造成的正弦的车轮转速波动,并且‑从检测到的如此诱发的车轮转速波动中确定振幅(ωamp),并且‑根据振幅(ωamp)获知轮胎纵向刚度(Kx)。本发明还涉及一种设备和一种车辆。
Method and apparatus for determining longitudinal stiffness of tyre
用于获知轮胎纵向刚度的方法和设备
2023-07-14
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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