【摘要】 针对通常自动变速器在坡道行驶时出现的问题，如上坡时的频繁换挡和下坡时不能自主利用发动机的牵阻作用使汽车减速等问题，在系统分析汽车纵向动力学的基础上，提出了一种利用电控单元内存的加速度表进行坡道识别的方法。这种方法简便、实用，对提高现有自动变速器的坡道行驶性能有重要意义。更多还原

【Abstract】 To eliminate the busy-shift when the vehicle travels on the upslope and to make use of the engine＇s brake capability when the vehicle travels on the downslope, the vehicle＇s longitudinal dynamics is discussed. A slope recognition method based on the vehicle＇s acceleration is proposed. This method has many merits, such as simplicity, utility, etc. It is very significant to improve the slope travelling performance of conventional automatic transmission.更多还原