四轮轮毂电机电动汽车驱动力矩分配研究

为了使四轮轮毂电机电动汽车在对开路面行驶时能够充分利用路面条件,实现更大的驱动力矩,研究了车辆在对开路面行驶时所能达到的最大驱动力矩,基于模糊控制原理控制车辆的附加转角保证车辆行驶的稳定性,并根据驾驶员的驾驶意图制定了四轮驱动力矩分配规则。基于Matlab/Simulink搭建七自由度整车模型及整车驱动力矩分配器模型,仿真实验表明,所制定的分配规则能充分利用轮毂电机电动汽车四轮力矩独立可控的优势,在能分别达到四轮最大力矩的同时,使车辆稳定行驶。

Research on Driving Torque Distribution of Four Wheel Motor Electric Vehicle

In order to make full use of road conditions and achieve greater driving force on four wheel motor electric vehicle,the maximum driving torque on μ-split road is studied,and additional angle is controlled by fuzzy controller to ensure the vehicle stability.Four-wheel drive torque distribution rules are established according to the driving intention.Seven degree of freedom vehicle model and vehicle driving torque distributor model are built in Matlab/Simulink.The results show that the distribution rules can utilize four wheel torque independent controllable advantage,and ensure four wheel maximum torque and vehicle stability simultaneously.