A control method, device and system for preventing a vehicle from slipping after emergency braking

Abstract

The invention relates to a control method, device and system for preventing car slipping after emergency braking. The method comprises the following steps: after an automatic vehicle hold request sent by an emergency braking module is received, a working signal of the emergency braking module and the working signal of an automatic vehicle hold module are obtained; whether the emergency braking module is in an active state or not is judged according to the working signal of the emergency braking module; whether the automatic vehicle hold module is in an active state or not is judged according to the working signal of the automatic vehicle hold module; if the emergency braking module and the automatic vehicle hold module are both in an inactive state, pressure relief of the braking system is controlled according to a preset first pressure relief slope, and the braking force of the braking system is enabled to be larger than the minimum braking force needed by vehicle hold. According to the control method, device and system for preventing car slipping after emergency braking in the invention, the phenomenon that the vehicle does not slip after emergency braking can be guaranteed, the driving safety is improved, and the driving experience is enhanced.

Description

technical field [0001] The invention relates to the technical field of vehicles, in particular to a control method, device and system for preventing a vehicle from slipping after emergency braking. Background technique [0002] With the rapid development of automobile intelligence, the application of various new automotive electronic systems in vehicles is becoming more and more abundant. In order to improve the selling point of vehicles, major OEMs have matched a variety of electronic technologies in vehicles to make cars more intelligent. change. Among them, AEB (Autonomous Emergency Braking, automatic emergency braking) is an active safety technology that detects the distance and relative speed from the vehicle or obstacle in front through radar and cameras, and judges the vehicle based on the distance and relative speed from the vehicle in front or obstacle. Whether there is a risk of collision, the AEB function is turned on when there is a risk of collision, and the ca...

AI Technical Summary

Problems solved by technology

Within this time difference, the AEB module has judged that the vehicle is stationary according to the vehicle speed signal, and the emergency braking is over at this time; after the ESC system detects that the emergency braking is over, the wheel cylinder pressure is quickly released, but at this time the four-wheel wheel speed sensor detects that the wheels are not Static, unable to activate AVH function

Therefore, within this time difference, neither the AEB module nor the ESC system can take over the vehicle, causing the vehicle to slide forward slowly after the AEB function brakes the vehicle

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