The hybridization of automotive powertrains increases due to legislative regulations in order to reduce emissions. Hybrid Dual-Clutch Transmissions, where an electric machine is included in the transmission, play a key role in this topic because of their significantly lower losses in contrast to other transmission concepts. On the one hand the hybridization results in new functionalities such as boosting, electric drive and many more. But on the other hand it also increases complexity and the necessity of improved control algorithms because of the advanced interaction of the engine, the electric machine, the clutches and the vehicle. For a good drivability a fast and precise control of all actuators is mandatory. The key elements here are the clutches as they connect or decouple the propulsion sources from the wheels. In order to meet these requirements, two model-based control approaches are elaborated in this contribution. Beginning with a detailed nonlinear parametric model, it is reduced with two different approaches and the singular perturbation theory. With the reduced models a position-based and a pressure-based controller are designed, both with a Two-Degree-of-Freedom structure that contains a flatness-based feedforward component, a linear–quadratic regulator with integrator as feedback component, an observer for the stiff system, and a trajectory generation module. Both controllers show a fast control response and only small tracking errors in experiments performed on a transmission test bench, where the filling of the clutch and the tracking of several specific torque profiles, such as a fast engagement process are validated.

由于立法规定，汽车动力系统的混合动力增加了，以减少排放。混合动力双离合器变速箱（变速箱中包含电机）在该主题中发挥着关键作用，因为与其他变速箱概念相比，它们的损耗显着降低。一方面，混合动力带来了新的功能，例如助力、电力驱动等等。但另一方面，由于发动机、电机、离合器和车辆的高级交互，它也增加了复杂性和改进控制算法的必要性。为了获得良好的驾驶性能，必须对所有执行器进行快速精确的控制。这里的关键元件是离合器，因为它们将推进源与车轮连接或分离。为了满足这些要求，本文详细阐述了两种基于模型的控制方法。从详细的非线性参数模型开始，使用两种不同的方法和奇异微扰理论对其进行简化。使用简化的模型 a位置为基础的和基于压力的控制器的设计，既与包含基于平坦前馈成分的2度的自由度的结构，与积分器作为反馈分量的线性二次调节器，对于刚性系统的观察者，和轨迹生成模块。在变速器测试台上进行的实验中，两个控制器都显示出快速的控制响应和很小的跟踪误差，其中离合器的填充和几个特定扭矩曲线的跟踪（例如快速接合过程）得到验证。