Simulation of energy-saving driving mode during steering for motorized wheels driving vehicle
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摘要: 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%。Abstract: In order to study the energy consumption feature of motorized wheels driving vehicle during steering, the resistance force was analyzed when the vehicle ran on curvy road, and a energy-saving mode of quasi-neutral steering was proposed. A simulation model of the vehicle was established by using MATLAB/Simulink, the yaw rate was taken as the control variable to control the front-rear torque distribution coefficient with PID, the lateral acceleration was taken as the control variable to control the left-right torque distribution coefficient with PID, and the steering condition at constant speed was simulated. Simulation result indicates that in the mode, no wheel slipping happens, the torque of rear-outer wheel is maximal, the torque of outer wheel is larger than the torque of inner wheel, the torque of rear wheel is larger than the torque of front wheel, and the power consumption decreases by 1.15%.
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Key words:
- automotive engineering /
- motorized wheels /
- steering /
- energy-saving mode /
- simulation model
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