A direct yaw moment control (DYC) for energy-efficiency and a DYC for stability of electric vehicles (EVs) are proposed. The DYC for energy-efficiency is active during non-safety-critical cornering manoeuvres to improve the energy-efficiency of EVs. The DYC for stability is active during safety-critical manoeuvres to keep the vehicle stable. A combination of the DYC for energy-efficiency and the DYC for stability is studied. A stability judgement based on the yaw rate and slip angle is designed for evaluating the criticality of the vehicle's working state. A switching principle for alternating between the DYC for energy-efficiency and the DYC for stability is designed. During non-safety-critical cornering manoeuvres, it is shown that the DYC for energy efficiency can save considerable percentage of energy compared to both equal torque driving and the DYC for stability. During cornering manoeuvres containing both non-safety-critical parts and safety-critical parts, the simulation results in this work show that the combination of the DYC for energy-efficiency and the DYC for stability can give 12% to 18% energy savings compared to the DYC for stability only for the vehicle and manoeuvres studied.

提出了一种用于能源效率的直接横摆力矩控制 (DYC) 和一种用于电动汽车 (EV) 稳定性的 DYC。用于能效的 DYC 在非安全关键型过弯操作中会发挥作用，以提高 EV 的能效。稳定性 DYC 在安全关键操作期间激活，以保持车辆稳定。研究了用于能源效率的 DYC 和用于稳定性的 DYC 的组合。设计了基于横摆率和侧偏角的稳定性判断，用于评估车辆工作状态的临界性。设计了一种用于在节能的DYC和用于稳定性的DYC之间交替的切换原理。在非安全关键的转弯机动中，结果表明，与等扭矩驱动和DYC稳定性相比，DYC能效可以节省相当大比例的能量。在包含非安全关键部件和安全关键部件的转弯机动过程中，这项工作的模拟结果表明，DYC 的能效和 DYC 的稳定性相结合可以节省 12% 到 18% 的能源。 DYC 仅用于所研究的车辆和机动的稳定性。