关键词: 道路纵向坡度；卡尔曼滤波算法；行驶安全性；仿真试验

Abstract: Vehicle in the long downhill section of the driving process, the road longitudinal slope of the vehicle longitudinal force analysis is particularly important, when the road slope over the conference will affect the driving safety of the vehicle, but the longitudinal slope of the road is difficult to obtain through the sensor direct measurement, real-time acquisition of the longitudinal slope of the road can provide a basis for optimizing the long downhill of the vehicle, this paper proposes based on the adaptive extension of the Kalman filter algorithm real-time estimation of the longitudinal slope of the road, and simulation experiments, the results show that this method has a strong accuracy and real-time.

Key words: Road longitudinal slope; Kalman filter algorithm; Driving safety; Simulation experiments