基于平整度的动力系统控制在混合动力双离合器变速器中的应用

Michael A. Mrochen, O. Sawodny
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引用次数: 2

摘要

本文考虑了混合动力双离合器传动系统中纯电驱动和混合动力驱动之间的过渡,同时遵循规定的车辆速度参考。这里的关键方面是一个快速和平稳的发动机启动,而不中断所需的驱动扭矩和最小的抽搐。为了解决这一问题,提出了一种具有基于平面度的前馈控制和渐近跟踪控制的二自由度控制器。采用一种定时控制结构来处理内燃机在启动、启动和燃烧过程中动态特性的切换。控制方案从基于转矩的控制切换到基于速度的控制,用于跟踪参考发动机速度轨迹。我们通过有意义的仿真来说明控制方案的性能。
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Flatness-based Powertrain Control for Engine Start Applications in Hybrid Dual-Clutch Transmissions
This article considers the transition between pure electrical driving and hybrid driving in a hybrid dual-clutch transmission powertrain while following a prescribed vehicle speed reference. The key aspect here is a fast and smooth engine start without interruption of the demanded driving torque and minimum jerk. A two-degree-of-freedom controller with a flatness-based feedforward control and an asymptotic tracking control is presented for solving this task. We use a scheduled control structure to cope with the switched dynamical characteristics of the internal combustion engine while being started traversing sticktion, cranking and combustion. The control scheme switches from a torque-based control for the break-free of the engine to a speed-based control for the tracking of a reference engine speed trajectory. We illustrate the performance of the control scheme by means of meaningful simulations.
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