Hi'/> Optimal control of mode transition for four-wheel-drive hybrid electric vehicle with dry dual-clutch transmission
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Optimal control of mode transition for four-wheel-drive hybrid electric vehicle with dry dual-clutch transmission

机译：具有干式双离合变速器的四轮混合动力电动汽车模式转换的最优控制

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Highlights•A five DOF vehicle dynamics model based on a Uni-Tire model is established.•Sliding mode control algorithm is utilized at engine speed dragged up phase.•A feedforward with robust feedback controller is applied at synchronization phase.•HIL bench is built to validate effectiveness of proposed control strategy.AbstractWhen the four-wheel-drive hybrid electric vehicle (HEV) equipped with a dry dual clutch transmission (DCT) is in the mode transition process from pure electrical rear wheel drive to front wheel drive with engine or hybrid drive, the problem of vehicle longitudinal jerk is prominent. A mode transition robust control algorithm which resists external disturbance and model parameter fluctuation has been developed, by taking full advantage of fast and accurate torque (or speed) response of three electrical power sources and getting the clutch of DCT fully involved in the mode transition process. Firstly, models of key components of driveline system have been established, and the model of five-degrees-of-freedom vehicle longitudinal dynamics has been built by using a Uni-Tire model. Next, a multistage optimal control method has been produced to realize the decision of engine torque and clutch-transmitted torque. The sliding-mode control strategy for measurable disturbance has been proposed at the stage of engine speed dragged up. Meanwhile, the double tracking control architecture that integrates the model calculating feedforward control with H∞robust feedback control has been presented at the stage of speed synchronization. Finally, the results from Matlab/Simulink software and hardware-in-the-loop test both demonstrate that the proposed control strategy for mode transition can not only coordinate the torque among different power sources and clutch while minimizing vehicle longitudinal jerk, but also provide strong robustness to model uncertainties and external disturbance.
机译： 突出显示 • 基于Uni-Tire模型建立了五自由度车辆动力学模型。 • 引擎采用滑模控制算法 • 在同步阶段应用具有鲁棒反馈控制器的前馈。 • HIL工作台旨在验证提议的有效性控制策略。 摘要 配备干式双离合变速器（DCT）的四轮驱动混合动力电动汽车（HEV）处于从纯电动后轮的模式转换过程中从前轮驱动到带发动机或混合动力驱动的前轮驱动，车辆纵向颠簸问题突出。通过充分利用三个电源的快速准确的转矩（或速度）响应，并使DCT离合器完全参与模式转换过程，开发了一种能够抵抗外部干扰和模型参数波动的模式转换鲁棒控制算法。 。首先，建立了动力传动系统关键部件的模型，并利用Uni-Tire模型建立了五自由度车辆纵向动力学模型。接下来，产生了一种多级最优控制方法，以实现发动机扭矩和离合器传递扭矩的确定。在发动机转速升高阶段，提出了可测扰动的滑模控制策略。同时，在速度同步阶段提出了将模型计算前馈控制与H ∞鲁棒反馈控制相集成的双重跟踪控制体系结构。最后，Matlab / Simulink软件和在环硬件测试的结果都表明，所提出的模式转换控制策略不仅可以协调不同动力源和离合器之间的扭矩，同时最大程度地减少车辆的纵向抖动，而且还可以提供强大的动力。不确定性和外部干扰建模的鲁棒性。

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