The invention relates to the field of vehicle speed estimation, and particularly discloses a vehicle longitudinal reference speed estimation method and system suitable for multiple working conditions and a vehicle. Whether the vehicle is in a low-speed running state is detected, if yes, the vehicle longitudinal reference speed is estimated by using a first longitudinal reference speed estimation strategy, and if not, whether a brake pedal signal exists is detected; if yes, whether the vehicle is in an ABS control working condition or not is detected according to the ABS state flag bit, and if not, whether the vehicle is in a turning working condition or not is detected; if the vehicle is in the ABS control working condition, the second longitudinal reference vehicle speed estimation strategy is used for estimating the longitudinal reference vehicle speed of the vehicle, if the vehicle is in the turning working condition, the third longitudinal reference vehicle speed estimation strategy is used for estimating the longitudinal reference vehicle speed of the vehicle, and the fourth longitudinal reference vehicle speed estimation strategy is used for estimating the longitudinal reference vehicle speed of the vehicle. Vehicle longitudinal reference speed estimation is carried out by considering different working conditions, and the accuracy of the vehicle longitudinal reference speed estimation result and the vehicle operation stability are improved.
本发明涉及车辆车速估计领域,具体公开一种适用多工况的车辆纵向参考车速估计方法及系统、车辆,检测车辆是否处于低速运行状态,若是使用第一纵向参考车速估计策略对车辆纵向参考车速进行估计,否则检测是否存在制动踏板信号,若是根据ABS状态标志位检测车辆是否处于ABS控制工况,否则检测车辆是否处于转弯工况;若处于ABS控制工况使用第二纵向参考车速估计策略对车辆纵向参考车速进行估计,若处于转弯工况使用第三纵向参考车速估计策略对车辆纵向参考车速进行估计,其他工况使用第四纵向参考车速估计策略对车辆纵向参考车速进行估计。本发明考虑不同工况进行车辆纵向参考车速估计,提高车辆纵向参考车速估计结果的准确性和车辆运行稳定性。
Vehicle longitudinal reference speed estimation method and system suitable for multiple working conditions and vehicle
一种适用多工况的车辆纵向参考车速估计方法及系统、车辆
2025-01-03
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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