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以一种新型的单电机、双离合器式重度混合动力轿车为对象,确定工作模式切换的边界条件及相应动力源需求扭矩,为满足工作模式切换过程的动力性与平顺性要求,制定了限力矩离合器接合模糊控制策略与各工作模式切换过程的扭矩协调控制策略。建立了整车仿真模型与相应控制策略模型,进行了各模式切换过程的计算机仿真分析。研究结果表明:该系统能迅速稳定地完成行进中电机起动发动机过程,采用所制定的扭矩协调控制策略能有效降低各模式切换过程的冲击度,提高汽车行驶的平顺性。
A new type of single-motor and double-clutch heavy hybrid sedan is selected as the object to determine the boundary conditions of working mode switching and the torque demand of the corresponding power source. In order to meet the requirements of power and ride comfort during the working mode switching, Torque coordination control strategy of clutch engagement fuzzy control strategy and each working mode switching process. The whole vehicle simulation model and the corresponding control strategy model are established, and the computer simulation of each mode switching process is carried out. The results show that the system can quickly and stably accomplish the process of motor starting, and the coordinated control strategy can effectively reduce the impact of each mode switching process and improve the ride comfort.