The invention discloses a front and rear axle type double-motor pure electric vehicle driving torque optimal distribution method which comprises the following steps: S1, establishing a driver model to collect vehicle speed, accelerator pedal and motor rotating speed signals, and transmitting the obtained real-time vehicle speed v, accelerator pedal opening degree and driving motor rotating speed n information to a vehicle control unit VCU to calculate a total demand torque instruction Treq, a required torque instruction obtained through the torque distribution strategy is sent to a motor controller MCU, and torque output of a driving motor is adjusted in real time through the motor controller MCU; s2, the slip rate s of the four wheels is calculated, and the torque instruction limit values Tfs and Trs of the front-axle motor and the rear-axle motor are calculated through PID control by adopting a driving anti-slip control strategy; according to the method, by combining average distribution and distribution based on the particle swarm algorithm, the economical efficiency, safety and stability of vehicle driving are ensured under the constraint of a driving anti-skid control strategy.
本发明公开了一种前后轴式双电机纯电动汽车驱动转矩优化分配方法,包括以下步骤:S1、建立驾驶员模型采集车速、加速踏板和电机转速信号,将获得的实时车速v、加速踏板开度和驱动电机转速n信息传输至整车控制器VCU中计算总需求转矩指令Treq,再将经过转矩分配策略得到的需求转矩指令发送给电机控制器MCU,通过电机控制器MCU实时调节驱动电机的转矩输出;S2、计算四个车轮的滑移率s,采用驱动防滑控制策略,通过PID控制计算前后轴电机转矩指令限值Tfs,Trs。本发明通过结合平均分配和基于粒子群算法的分配,在驱动防滑控制策略的约束下,确保了车辆行驶的经济性、安全性及稳定性。
Driving torque optimal distribution method for front and rear axle type double-motor pure electric vehicle
一种前后轴式双电机纯电动汽车驱动转矩优化分配方法
2024-08-02
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / G05D SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES , Systeme zum Steuern oder Regeln nichtelektrischer veränderlicher Größen / G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung / G06N COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS , Rechnersysteme, basierend auf spezifischen Rechenmodellen |
Driving torque distribution method and system of front-rear-axle dual-motor driving electric vehicle
European Patent Office | 2020
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