The invention discloses an automatic gear shifting method, system and device for a pure electric vehicle, and the method, system and device comprise the steps that firstly, the current vehicle speed, the accelerator pedal opening degree and the accelerator pedal opening degree change rate of the electric vehicle are obtained; the vehicle speed, the accelerator pedal opening degree and the accelerator pedal opening degree change rate are input into a preset fuzzy control model to obtain driving intentions of a driver, and different driving intentions correspond to different gear shifting strategies; and then selecting a corresponding gear shifting strategy according to the intention of the driver to obtain a target gear shifting strategy, and controlling the electric vehicle to perform gear shifting according to the target gear shifting strategy. According to the method, the system and the related device, the driver intention is recognized, a three-parameter input and single-parameter output fuzzy control method is adopted, a proper gear shifting control strategy which can judge the driver intention in time according to the working condition so as to select a proper gear shifting control strategy is established, and the requirements of different driving characteristics of different drivers are met.
本申请公开了一种用于纯电动汽车的自动换挡方法、系统和装置,本方法、系统和装置,首先获取电动汽车当前的车速、油门踏板开度和油门踏板开度变化率,将所述车速、油门踏板开度和油门踏板开度变化率输入预设的模糊控制模型得到驾驶员的驾驶意图,不同的驾驶意图对应有不同的换挡策略;然后根据所述驾驶员意图选择对应的换挡策略得到目标换挡策略,根据所述目标换挡策略控制所述电动汽车进行换挡。本方法、系统及相关装置通过驾驶员意图的识别,采用三参数输入单参数输出模糊控制方法,建立了能够根据工况适时判断驾驶员意图从而选择合适的换挡控制策略,达到满足不同驾驶员的不同驾驶特性的需求。
Automatic gear shifting method, system and device for pure electric vehicle
用于纯电动汽车的自动换挡方法、系统和装置
2023-12-05
Patent
Electronic Resource
Chinese
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