A vehicle brake control system and method

Abstract

A vehicle brake control system is disclosed. The system includes an intelligent braking model, model parameter input module, Vehicle longitudinal dynamics model, Subtractor, wire-controlled actuator,the model parameter input module transmits the acquired parameter signals to the intelligent braking model and the vehicle longitudinal dynamics model, The model parameter input module transfers the target deceleration to the subtractor, the vehicle longitudinal dynamics model transfers the deceleration generated by the vehicle itself to the subtractor, and the subtractor transfers the obtained line control deceleration to the line control system of the whole vehicle. According to the different braking process of the vehicle, the system selects different brake distance estimation model to achieve accurate brake distance estimation, A vehicle intelligent braking control model and its implementation method are proposed, which can improve vehicle driving safety and road driving efficiency bycombining the relative distance from the front obstacle and speed detected by radar system and the feedback information of the vehicle.

Description

technical field [0001] The invention relates to the technical field of vehicle active safety, in particular to a vehicle intelligent braking control model and a control method thereof. Background technique [0002] With the continuous improvement of new car evaluation standards by national and industry evaluation agencies, technologies such as adaptive cruise control (Adaptive Cruise Control, ACC) and automatic emergency braking (Autonomous Emergency Braking, AEB) are constantly being popularized and applied. When there is an emergency on the road ahead, if the vehicle cannot change lanes, the vehicle needs to actively brake to implement deceleration and collision avoidance. During the deceleration and collision avoidance process, in addition to accurately measuring the relative distance, speed and Outside the azimuth angle. The estimation of the braking distance in the deceleration braking process is also very important. The safety distance model estimates the braking dist...

AI Technical Summary

Problems solved by technology

The safety distance models adopted by the current ACC and AEB systems all adopt a unified model, ignoring the differences in the four braking processes, resulting in a large deviation in the estimation of the braking distance, which not only affects the road driving efficiency, but also affects driving safety.

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