The invention discloses a distributed electric vehicle stability control method and system. The method comprises the following steps: sequentially calculating the maximum torque slope allowed to be used by a whole vehicle, the percentage of the maximum torque slope allowed to be used by each distributed motor, the torque difference ratio of each distributed motor, the torque difference ratio scaling coefficient and the maximum torque difference ratio scaling coefficient of each distributed motor, and the distribution coefficient of the torque slope of each distributed motor; the torque variation of each distributed motor and the dynamic target torque of each distributed motor at the current moment; through multiple times of cyclic iteration, the dynamic target torque of each distributed motor at the current moment is gradually close to the steady-state target torque; performing torque dynamic control according to the torque change slope rated capability of each distributed motor, so that each distributed motor can simultaneously reach a preset steady-state target torque in the torque change process; and the running stability of the whole vehicle in the dynamic adjustment process of the dynamic target torque of each distributed motor at the current moment is realized.
本发明公开了一种分布式电动汽车稳定性控制方法及系统,方法包括:依次计算整车允许使用的最大转矩斜率、各分布式电机允许使用的最大转矩斜率百分比、各分布式电机的转矩差异比、各分布式电机的转矩差异比放缩系数和最大转矩差异比放缩系数、各分布式电机转矩斜率的分配系数、各分布式电机的转矩变化量以及各分布式电机当前时刻动态目标转矩;经过多次循坏迭代,使得各分布式电机当前时刻动态目标转矩逐渐接近于稳态目标转矩;根据各分布式电机转矩变化斜率额定能力进行转矩动态控制,使得各分布式电机在转矩变化过程中能够同时达到预设的稳态目标转矩;实现各分布式电机当前时刻动态目标转矩在动态调整过程中整车行驶的稳定性。
Distributed electric vehicle stability control method and system
一种分布式电动汽车稳定性控制方法及系统
2024-09-06
Patent
Electronic Resource
Chinese
IPC: | B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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