The invention relates to a brake-by-wire vehicle slip rate control method and system, and the method comprises the following steps: calculating the slip rate of a controlled vehicle based on the collected vehicle speed, wheel rotation speed and current road adhesion coefficient of the controlled vehicle; judging whether the slip rate control needs to be activated or not; if the slip rate control needs to be activated, estimating a road adhesion coefficient based on a pre-constructed control-oriented slip rate control system model and a preset performance control strategy; controlling the controlled vehicle by using the estimated road adhesion coefficient through a motor servo line control braking system of the vehicle; otherwise, controlling the controlled vehicle by using the current road adhesion coefficient through the motor servo brake-by-wire system of the vehicle. By the adoption of the method, the dynamic and steady state response errors of the key parameter slip rate in the vehicle braking slip process can be converged to the preset error boundary within the finite time. Therefore, the method can be widely applied to vehicle slip rate control.
本发明涉及一种线控制动车辆滑移率控制方法和系统,包括以下步骤:基于采集的被控车辆的车辆速度、车轮转速以及当前路面附着系数,判断是否需要对滑移率控制进行激活:若需要激活则基于预先构建的面向控制的滑移率控制系统模型以及预设性能控制策略,对路面附着系数进行估计,并由车辆自身电机伺服线控制动系统利用估计得到的路面附着系数对被控车辆进行控制;否则,由车辆自身电机伺服线控制动系统利用当前路面附着系数对被控车辆进行控制。采用本发明方法,车辆制动滑移过程中的关键参数滑移率的动态及稳态响应误差均可以在有限时间内收敛到预先设定的误差边界内。因此,本发明可以广泛应用于车辆的滑移率控制。
Brake-by-wire vehicle slip rate control method and system
一种线控制动车辆滑移率控制方法和系统
27.06.2023
Patent
Elektronische Ressource
Chinesisch
IPC: | B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF |
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