The invention discloses a hybrid electric automobile mode switching control system and a control method thereof, and belongs to the field of automobile dynamic control. A mode switching identification module is used for judging whether to switch from a pure electric mode to a hybrid mode or not according to the running speed of an automobile, the state of charge of a battery and the required torque of the whole automobile; a switching strategy selection module calculates and selects a switching strategy through the positions of an acceleration pedal and a brake pedal and the position change rate; a switching strategy module comprises three different mode switching strategies which can meet switching requirements of different working conditions; a torque distribution module distributes and compensates each component according to the torque calculated by the switching strategy; and a time delay estimation module performs estimation calculation on the phenomenon that time delay occurs in a forward channel. According to the mode switching phenomenon of the hybrid electric automobile facing different working condition requirements, different switching strategies are selected according to actual requirements, the requirements of different working conditions for switching time, dynamic property and smoothness are met, and the time delay of the forward channel can be compensated.
本发明公开了一种混合动力汽车模式切换控制系统及其控制方法,属于汽车动态控制领域。模式切换识别模块通过汽车行驶速度、电池荷电状态以及整车需求转矩来判断是否进行纯电动模式至混动模式的切换;切换策略选择模块通过加速、制动踏板位置和位置变化率计算选择切换策略;切换策略模块包含三种不同的模式切换策略能够满足不同工况的切换需求;转矩分配模块将切换策略计算出的转矩对各部件进行分配和补偿;时滞预估模块对时滞出现在前向通道这一现象进行预估计算。针对混合动力汽车面对不同工况需求进行模式切换现象,根据实际需求选择不同切换策略,满足不同工况对切换时间、动力性以及平顺性的要求,并能够对前向通道时滞现象进行补偿。
Hybrid electric automobile mode switching control system and control method thereof
一种混合动力汽车模式切换控制系统及其控制方法
2021-06-25
Patent
Electronic Resource
Chinese
IPC: | B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion |
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