ABSTRACT Aiming at the road slope variation and the safety of following vehicles, Prescan and Matlab were used to analyze the braking efficiency of AEB control model under different slopes. Firstly, based on the AEB control model of safe distance, the early-warning critical distance and automatic braking distance model of vehicle braking are constructed. Secondly, Prescan software was used to build simulation scenes under different slope road environment. Finally, the AEB control model was constructed by using Simulimk in Matlab, and the braking performance of vehicles on different slopes was analyzed according to the warning critical distance and automatic braking distance.According to the simulation results:When braking on horizontal road, AEB system of safety distance model can effectively control the distance between workshops when the speed is 80km/h. Under the condition of 15% slope road, when the speed is 60km/h, the braking stability of AEB system has significantly decreased. Keywords: AEB controller; Roads with different slopes; Prescan; With the parking brake

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