The invention discloses a self-adaptive optimization control method and system for transverse stability of a distributed driving electric vehicle, and the method comprises the steps: constructing a double-layer optimization model for the self-adaptive optimization of the transverse stability of the vehicle; wherein the upper-layer optimization model is an additional yaw moment prediction model considering the influence of the side slip angle and the yaw velocity on the lateral stability of the vehicle, and the problem of adaptability of lateral stability control of the vehicle under an extreme working condition is solved by dynamically adjusting the weight of a vehicle state variable; and the maneuverability and the stability of the vehicle under the limiting working condition are improved. The lower-layer optimization model is a four-wheel torque optimization distribution model comprehensively considering the stability and the dynamic property of the vehicle, the problem of unreasonable target weight distribution under the limiting working condition is solved by adaptively adjusting the weight coefficient of a model target function, and the technical effects of optimizing the torque distribution of each wheel and improving the overall stability of the vehicle are achieved.
本发明公开一种分布式驱动电动汽车横向稳定性自适应优化控制方法和系统,该方法构建了用于车辆横向稳定性自适应优化的双层优化模型,其中上层优化模型为考虑质心侧偏角和横摆角速度对车辆横向稳定性影响的附加横摆力矩预测模型,通过动态调整车辆状态变量的权重,解决了极限工况下车辆横向稳定性控制的适应性问题,提高了车辆在极限工况下的操纵性和稳定性。下层优化模型为综合考虑车辆稳定性和动力性的四轮转矩优化分配模型,通过自适应调节模型目标函数的权重系数,解决了在极限工况下目标权重分配不合理的问题,达到优化各车轮转矩分配以及提高车辆整体稳定性的技术效果。
Self-adaptive optimization control method and system for transverse stability of distributed driving electric vehicle
一种分布式驱动电动汽车横向稳定性自适应优化控制方法和系统
2024-09-17
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 |
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