双引擎混合动力电动汽车的动态协调控制策略基于离合器摩擦扭矩观察器
Qicheng Xue1, Xin Zhang1, Hongwei Chen1
1Beijing Key Laboratory of Powertrain Technology for New Energy Vehicles, School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing, 100044, China.
这项研究开发了混合动力电动汽车的新控制策略,以减少模式切换期间的扭矩波动. 拟议的方法显著减少离合器摩擦工作和车辆冲动,以实现更顺的过渡.
科学领域:
- 汽车工程 汽车工程
- 控制系统 控制系统
- 混合动力电动汽车 混合动力电动汽车
背景情况:
- 带有双电机和离合器的混合动力系统在模式切换期间因电机和发动机响应不同而面临扭矩波动.
- 这些波动可能会对车辆性能和乘客舒适性产生负面影响.
研究的目的:
- 在模式切换过程中估计离合器摩擦扭矩.
- 开发混合动力汽车组件的动态协调控制策略.
- 为了减轻扭矩波动,并提高模式转换的流性.
主要方法:
- 开发了一个使用卡尔曼波器算法的扭矩观察器,该算法基于双引擎混合动力电动汽车动态模型.
- 设计了单发动机到双发动机和双发动机到并行驱动模式的控制策略.
- 使用功率水平硬件在循环 (HIL) 测试平台验证控制策略的性能.
主要成果:
- 基于发动机空头转速的拟议控制策略,与使用发动机目标转速相比,减少了42.5%的离合器滑动摩擦工作.
- 双发动机到并行驱动模式开关的最大纵向冲动减少了25.4%.
- HIL测试证实了开发的动态协调控制策略的有效性.
结论:
- 开发的基于卡尔曼波器的扭矩观察器准确地估计了离合器摩擦扭矩.
- 这种新的控制策略有效地抑制了双引擎混合动力汽车在模式切换期间的扭矩波动.
- 结果表明,在操作模式更改期间,车辆的流性和效率显著提高.
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