Vehicle brake control method and system, equipment and medium

Abstract

The invention relates to a vehicle brake control method and system, equipment and a medium. The method includes the steps that S1, a first acceleration when the pedal opening is zero is calculated; S2, when the first acceleration is less than or equal to the preset acceleration, the opening of a first pedal is calculated according to the current vehicle speed, the preset acceleration and the firstacceleration, the pedal opening is controlled as the opening of the first pedal, and otherwise, S3 is executed; S3, when a second acceleration corresponding to exhaust braking is equal to a difference between the preset acceleration and the first acceleration, the pedal opening is controlled as zero, exhaust braking is started, and otherwise, S4 is executed; S4, a third acceleration of a retarderwhen a control signal is maximum is calculated according to the current speed; and S5, when the third acceleration is less than or equal to a first difference value, a first control signal corresponding to a difference between the first acceleration of the current vehicle speed and the preset acceleration is calculated, the first control signal is used for controlling the retarder, the pedal opening is controlled as zero, and otherwise, the preset acceleration is sent to an EBS controller for braking.

Description

technical field [0001] The present disclosure relates to the field of intelligent driving control, in particular, to a vehicle braking control method, system, device and medium. Background technique [0002] The key technologies of intelligent driving involve environmental perception, high-precision positioning, decision-making planning, and executive control. As the bottom layer of the intelligent driving vehicle system, executive control is directly related to the ultimate realization of the intelligent driving function. As the core part of executive control, vehicle motion control includes longitudinal control and lateral control. Among them, longitudinal control is divided into driving control and braking control. Braking control is very important for safe and stable driving of vehicles. In the prior art, the braking control mainly calculates the braking torque of the vehicle through the speed difference and distance difference with the preceding vehicle, so as to realiz...

AI Technical Summary

Problems solved by technology

[0003] Most of the existing technologies are limited to the single passenger car braking control of the braking system, while the mine car braking includes coasting braking, exhaust braking, retarder braking, service braking and their combinations. more complicated

The existing technology mostly obtains the braking torque and braking pressure based on parameters such as vehicle speed, but in the braking process, the braking acceleration is more important for braking, and the existing technology lacks a technical solution for braking based on the braking acceleration

Images