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为了研究电动轮驱动汽车在转向过程中的能量消耗特点,分析了车辆曲线行驶时的阻力,提出了车辆准中性转弯行驶的节能模式。在MATLAB/Simulink上建立了电动轮驱动汽车仿真模型,利用横摆角速度作为控制变量对前后轴的转矩分配系数进行PID控制,利用车辆的侧向加速度作为控制变量对左右轴的转矩分配系数进行PID控制,并对车辆匀速转弯工况进行了仿真。仿真结果表明:在准中性转向的行驶模式中,车轮没有产生滑移现象,后外轮上的驱动转矩明显大于其他车轮,外侧车轮的转矩要大于内轮,后轮的转矩要大于前轮,车辆的功率消耗减小了1.15%。
In order to study the energy consumption characteristics of electric wheel drive vehicles during the steering process, the resistance of the vehicle during the curve driving is analyzed and the energy saving mode of the vehicle turning with a semi-neutral turning is proposed. The simulation model of electric wheel drive vehicle was established on MATLAB / Simulink. The yaw rate was used as the control variable to control the torque distribution coefficients of the front and rear axles. The lateral acceleration of the vehicle was used as the control variable to the left and right axle torque distribution coefficients PID control, and the vehicle cornering conditions were simulated. The simulation results show that: in the quasi-neutral steering mode, the wheels do not slip, the rear outer wheel drive torque is significantly greater than the other wheels, the outer wheel torque is greater than the inner wheel, the rear wheel torque is greater than The front wheel, the vehicle’s power consumption decreased by 1.15%.