The invention discloses a vehicle speed arbitration calculation method and system for a dynamic domain controller, and the method comprises the steps: carrying out the vehicle speed calculation priority ranking of all vehicle speed obtaining modules of a vehicle based on the vehicle speed precision, and setting corresponding vehicle speed correction coefficients for all vehicle speed obtaining modules; therefore, when the vehicle has different vehicle conditions, the virtual vehicle speed with the highest precision under the current vehicle condition can be obtained according to the current state of the vehicle and the priority sequence, the virtual vehicle speed is corrected by using the vehicle speed correction coefficient, and the current actual vehicle speed of the power domain controller is obtained. The vehicle speed calculation precision during vehicle slipping, locking, bumping, gear shifting, tire abrasion and insufficient tire pressure is improved; under the conditions that the GPS signal of the vehicle is weak, and a rotary transformer fault, an ABS fault, a TCU fault, a CAN or Ethernet communication fault and the like occur, the vehicle speed requirement of vehicle motion closed-loop control is very good in robustness, so that the situation that the vehicle has no available vehicle speed for vehicle closed-loop control due to one fault of the vehicle is avoided.
本发明公开了一种动力域控制器的车速仲裁计算方法及系统,其基于车速精度对车辆各项车速获取模块进行车速计算优先级排序,并对各项车速获取模块设置相应的车速修正系数;从而在车辆发生不同车况时,能够根据其当前所处状态,根据优先级排序获得当前车况下精度最高的虚拟车速,并利用车速修正系数对虚拟车速进行修正,得到动力域控制器的当前实际车速,提高车辆打滑、抱死、颠簸、换挡、轮胎磨损、胎压不足时车速计算的精度;对车辆GPS信号弱、发生旋变故障、ABS故障、TCU故障、CAN、或以太网通讯故障等情况下,车辆运动闭环控制的车速需求都有很好的鲁棒性,使车辆不会因其中某一个故障而导致车辆闭环控制无可用的车速。
Vehicle speed arbitration calculation method and system of power domain controller
动力域控制器的车速仲裁计算方法及系统
2023-04-14
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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