Vehicle and braking control method and device thereof

Abstract

The invention discloses vehicle and a braking control method and device thereof. The method comprises the following steps: judging the slipping rate of a target wheel when the vehicle is at a brakingstate; obtaining the pressure of a brake master cylinder of the vehicle when the slipping rate of the target wheel is greater than a first slipping rate threshold value or smaller than a second slipping rate threshold value, judging whether the pressure of the brake master cylinder is greater than a first pressure threshold value in real time, and ensuring that the second slipping rate threshold value is smaller than the first slipping rate threshold value; timing the time period in which the pressure of the brake master cylinder is continuously greater than the first pressure threshold valueif the pressure of the brake master cylinder is greater than the first pressure threshold value; controlling the pressure of a brake cylinder of the target wheel according to a first braking force difference threshold value when the timed period does not reach first preset time; controlling the pressure of the brake cylinder of the target wheel according to a second braking force difference threshold value after the timed time reaches the first preset time, and ensuring that the first braking force difference threshold value is smaller than the second braking force difference threshold value.

Description

technical field [0001] The present invention relates to the technical field of vehicle control, in particular to a vehicle braking control method, a non-transitory computer-readable storage medium, a vehicle braking control device and a vehicle. Background technique [0002] With the continuous improvement of vehicle speed and the increase of road traffic density, higher and higher requirements are put forward for the safety of vehicle driving. The anti-lock braking system of automobiles can prevent the wheels from slipping during braking and improve the directional stability during braking by controlling and adjusting the braking force of the wheels, thereby greatly improving the braking performance of the car and improving the safety of the car . [0003] When the characteristics of the tires on the left and right wheels of the car are different or the adhesion coefficients of the roads in contact with the left and right wheels are different, the yaw moment will be genera...

AI Technical Summary

Problems solved by technology

However, at the initial stage when the adhesion coefficients of the road surfaces contacted by the left and right wheels are different, and the road surface recognition function cannot recognize the road surface, the above corresponding measures have insufficient effect on limiting the yaw moment, and the lateral stability of the vehicle during braking is poor.

Moreover, at the initial stage when the adhesion coefficients of the road surfaces contacted by the left and right wheels are different, the driver often does not react in a timely manner to the sudden change in driving conditions, and cannot take effective countermeasures such as turning the steering wheel in time to adjust the direction of the vehicle.

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