The invention discloses a vehicle speed estimation method and device, a vehicle control unit and a medium. The method comprises the steps of determining a real-time simulation vehicle speed signal according to a motor driving torque provided by a motor controller in real time, a motor resistance torque provided by a vehicle stabilization system controller in real time and a whole vehicle power system simulation model, and determining simulation vehicle speed precision according to the simulation vehicle speed signal and an actual vehicle speed signal; a real-time conversion vehicle speed signal is determined according to a power motor rotating speed signal collected by a rotating speed sensor in real time, and the conversion vehicle speed precision is determined according to the rotating speed vehicle speed signal and the actual vehicle speed signal; a measured vehicle speed signal collected by a vehicle speed sensor in real time is obtained, and the measured vehicle speed precision is determined according to the measured vehicle speed signal and the actual vehicle speed signal; and determining an optimal vehicle speed signal according to the simulated vehicle speed signal, the simulated vehicle speed precision, the converted vehicle speed signal, the converted vehicle speed precision, the measured vehicle speed signal and the measured vehicle speed precision. According to the scheme, the precision of vehicle speed measurement is improved through fusion of three vehicle speed signals.
本发明公开了一种车速估算方法、装置、整车控制器及介质。该方法包括根据电机控制器实时提供的电机驱动扭矩、车辆稳定系统控制器实时提供的电机阻力扭矩及整车动力系统仿真模型确定实时仿真车速信号,并根据仿真车速信号与实际车速信号确定仿真车速精度;根据转速传感器实时采集的动力电机转速信号确定实时转换车速信号,并根据转速车速信号和实际车速信号确定转换车速精度;获取车速传感器实时采集的测量车速信号,并根据测量车速信号和实际车速信号确定测量车速精度;根据仿真车速信号、仿真车速精度、转换车速信号、转换车速精度、测量车速信号及测量车速精度确定最优车速信号。本方案通过三种车速信号融合提高了车速测量的精度。
Vehicle speed estimation method and device, vehicle control unit and medium
一种车速估算方法、装置、整车控制器及介质
2022-08-09
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 |
VEHICLE SPEED ESTIMATION METHOD AND APPARATUS, AND VEHICLE CONTROL UNIT AND MEDIUM
European Patent Office | 2023
|Electric vehicle speed diagnosis method and device, medium and vehicle control unit
European Patent Office | 2024
|Vehicle speed limit control method and device, vehicle control unit and storage medium
European Patent Office | 2023
|Vehicle speed control method and device, vehicle control unit and vehicle
European Patent Office | 2025
|Vehicle speed cruise control method and device, vehicle control unit and vehicle
European Patent Office | 2021
|