The invention provides a multi-axle vehicle electric drive axle inter-axle torque anti-slip control method and equipment, and the method comprises the steps: selecting a non-driving shaft or a driving shaft with the lowest rotating speed as a reference shaft, determining whether the vehicle is in a starting state or a running state by judging whether the rotating speed of the reference shaft is greater than a preset rotating speed value, and controlling the vehicle to run in the starting state; whether the rotating speed difference between each driving shaft and the reference shaft is larger than a preset threshold value or not is judged, whether each driving shaft is in a slip state or not is determined, and when the driving shafts are in the slip state, the slip rate of each driving shaft is controlled to be within a preset optimal slip rate range through torque transfer or torque reduction. In the running state, whether the slip rate of each driving shaft is larger than the preset optimal slip rate or not is judged, whether each driving shaft is in the slip state or not is determined, and when the driving shafts are in the slip state, the slip rate of each driving shaft is controlled to be within the preset optimal slip rate range through torque transfer or torque reduction. Therefore, the inter-axle torque of the electric drive axle of the multi-axle vehicle is reasonably distributed in real time, and when a plurality of drive axles of the vehicle slip, torque redistribution can be realized, so that the road adhesion coefficient of each axle is fully utilized, and the trafficability of the vehicle is improved.
本发明提供了一种多轴车辆电驱桥轴间扭矩防滑控制方法及设备,其选择非驱动轴或转速最低的驱动轴作为参考轴,通过判断参考轴的转速是否大于预定转速值,确定车辆是处于起步状态还是行驶状态,且在起步状态下,判断各驱动轴与参考轴之间的转速差是否大于预定阈值,确定各驱动轴是否处于打滑状态,且在驱动轴处于打滑状态时,通过扭矩转移或扭矩减值以控制各驱动轴的滑移率在预定的最佳滑移率范围内。在行驶状态下,判断各驱动轴的滑移率是否大于预定的最佳滑移率,确定各驱动轴是否处于打滑状态,且在驱动轴处于打滑状态时,通过扭矩转移或扭矩减值以控制各驱动轴的滑移率在预定的最佳滑移率范围内,从而对多轴车辆电驱桥轴间扭矩进行实时的合理分配,且在车辆的多个驱动轴都打滑时,可实现扭矩再分配,从而充分利用各轴的路面附着系数,提高车辆通过能力。
Antiskid control method and device for inter-axle torque of electric drive axle of multi-axle vehicle
多轴车辆电驱桥轴间扭矩防滑控制方法及设备
2024-03-01
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 |
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