分布式驱动电动汽车的层次扭矩向量控制策略,考虑到稳定性和经济性
Shuiku Liu1, Haichuan Zhang1, Shu Wang1
1School of Automobile, Chang'an University, Xi'an 710000, China.
Sensors (Basel, Switzerland)
|July 12, 2025
概括
本研究介绍了分布式驱动电动汽车 (DDEV) 的层次扭矩向量控制策略. 该方法提高了车辆的操控稳定性,并通过优化扭矩分布来降低能源消耗.
科学领域:
- 汽车工程 汽车工程
- 控制系统 控制系统
- 电动车辆 电动车辆
背景情况:
- 协调车辆处理稳定性和能源消耗是分布式驱动电动汽车 (DDEV) 的一个关键挑战.
- 现有的控制策略往往难以有效地平衡这两个相互竞争的目标.
- 准确估计轮胎-路面摩擦系数 (TRFC) 对于先进的车辆动力控制至关重要.
研究的目的:
- 为DDEVs提出一个分层的扭矩向量控制策略.
- 为了提高车辆的操控稳定性,同时降低能源消耗.
- 开发一个强大的系统,能够适应不同的道路条件.
主要方法:
- 一个分层的控制策略,集成TRFC估计,适应型预测控制 (MPC) 直接转时刻控制 (DYC) 和扭矩向量分配.
- 使用视觉和动态信息的融合进行TRFC估计.
- 根据估计的TRFC,具有动态更新的轮胎拐角刚度的自适应MPC.
- 考虑稳定性和能源消耗的扭矩向量分配,由从延长相平面导出的稳定性边界协调.
主要成果:
- 拟议的策略显著降低了侧滑角度的根平均平方误差 (RMSE) 44.88%.
- 在动态条件下,发动机功耗降低了24.45%.
- 与传统方法相比,硬件在循环 (HIL) 模拟验证了该策略的有效性.
结论:
- 开发的层次扭矩向量控制策略有效地提高了DDEV中的车辆操控稳定性.
- 该战略实现了大幅节省能源,而不会影响安全.
- 这种方法为优化电动汽车性能提供了一个有希望的解决方案.
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