The invention provides a vehicle transverse load transfer rate calculation method and device, equipment and a medium. The longitudinal speed and the lateral speed of the wheel center are determined by obtaining vehicle driving information and the wheel distance; calculating the side slip angle of the tire according to the longitudinal speed and the lateral speed of the wheel center and the wheel steering angle; calculating a tire slip rate according to the wheel steering angle and radius; establishing a nonlinear tire model through a magic formula, and obtaining longitudinal force or lateral deviation force of the tire according to the nonlinear tire model; according to the design parameters and the working condition input parameters of the automobile, a whole automobile nonlinear dynamic model is established, the whole automobile transverse acceleration is obtained through the whole automobile nonlinear dynamic model, and the automobile transverse load transfer rate is calculated. Therefore, according to the method, the transverse load transfer rate is nonlinearly calculated based on the tire lateral deviation characteristic, the method has general value on common vehicle models, an early warning basis is provided for vehicle rollover movement through the transverse load transfer rate, and a theoretical basis is provided for stability and safety control of the vehicle.
本发明提供一种车辆横向载荷转移率计算方法、装置、设备及介质。通过获取车辆行驶信息和车轮轮距确定车轮轮心的纵向速度和侧向速度;根据车轮轮心的纵向速度、侧向速度和车轮转向角计算轮胎的侧偏角;根据车轮转向角和半径计算轮胎滑移率;通过魔术公式建立非线性轮胎模型,根据非线性轮胎模型得到轮胎纵向力或侧偏力;根据汽车的设计参数和工况输入参数建立整车非线性动力学模型,通过整车非线性动力学模型得到整车横向加速度计算车辆横向载荷转移率。由此可见,本发明基于轮胎侧偏特性非线性计算横向载荷转移率,在常见车辆模型上具有通用价值,通过横向载荷转移率为车辆侧翻运动提供预警基础,以及为汽车的稳定性和安全性控制提供理论基础。
Vehicle transverse load transfer rate calculation method, device, equipment and medium
一种车辆横向载荷转移率计算方法、装置、设备及介质
2024-05-14
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 |
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