互联电动汽车能量最优制动速度规划

Haoxuan Dong, Weichao Zhuang, Yan Wang, Haonan Ding, Guo-dong Yin
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引用次数: 1

摘要

为了提高电动汽车的再生能量,提出了一种能量最优制动策略。首先,利用车对万物通信(即制动距离和终端速度)获取车辆制动意图。然后,以再生能量最大化为目标,建立了考虑制动意图的最优控制问题。采用基于距离的动态规划算法来规划能量最优制动速度,解决了控制问题。最后,通过仿真验证了所提策略的有效性。结果表明,与恒速策略相比,该策略的再生能源效率提高了10%以上。在此基础上,研究了几种交通场景下的能量最优制动建议,即在高速行驶范围内,较大的制动力可以降低车辆阻力,充分利用电机发电功率;制动力调整在中速范围内,以减少制动摩擦,为了快速停车,应使用较大的制动力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Energy-optimal Braking Velocity Planning of Connected Electric Vehicle
To improve the regeneration energy of electric vehicle, an energy-optimal braking strategy is developed. First, the vehicle braking intention is accessed by using vehicle-to-everything communication, i.e., braking distance and terminal velocity. Then, an optimal control problem with consideration of braking intention is formulated for maximizing regeneration energy. The control problem is solved by distance-based dynamic programming algorithm to plan the energy-optimal braking velocity. Finally, the effectiveness of proposed strategy is evaluated by simulation. The results show the regeneration energy efficiency of proposed strategy achieves improvement is over 10% compared with the constant speed strategy. Furtherly, the energy-optimal braking suggestions is investigated based on several traffic scenarios, i.e., a larger braking force in a high-velocity range can reduce vehicle resistance and make full use of motor generation power; the braking force was adjusted in moderated-velocity range for reducing friction braking, and a larger braking force should be used for parking quickly.
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