Brake system delay self-learning method and computer-readable storage medium

Abstract

The invention discloses a braking system delayed self-learning method and a computer readable storage medium. The braking system delayed self-learning method includes the following steps that the trigger moment of a braking signal, the initial pressure of a braking system and the initial accelerated speed of a vehicle are recorded; if the change rate of the pressure of the braking system exceeds apressure change threshold value and the difference between the pressure and the initial pressure of the braking system exceeds a pressure difference threshold value, the difference between the accelerated speed and the initial accelerated speed of the vehicle at the moment is calculated, and the difference value is compared with an accelerated speed difference threshold value; if the difference value exceeds the accelerated speed difference threshold value, the difference between a decelerated speed establishing moment and the trigger moment serves as delay time. Through the braking system delayed self-learning method, the delay time of the braking system is determined, the braking system of the vehicle does not need to be calibrated multiple times, test cost is saved, the collision distance estimation accuracy is improved, and an early warning about a collision can be accurately given in time.

Description

technical field [0001] The invention relates to the field of automobiles, in particular to a braking system delay self-learning method and a computer-readable storage medium. Background technique [0002] First, some terms are explained: "vehicle control unit", referred to as electronic control unit, automotive electronic control unit or integrated circuit control unit, multi-channel control device, etc., different names of automobile manufacturing companies are also different, it is composed of integrated circuits A control device used to implement a series of functions such as analyzing, processing, and sending control instructions for data. "Intelligent driving", the on-board control unit uses on-board sensors to perceive the surrounding environment of the vehicle, and controls the steering and speed of the vehicle according to the road, vehicle position and obstacle information obtained by the perception, so that the vehicle can safely and reliably drive on the road dri...

AI Technical Summary

Problems solved by technology

Different vehicles will have deviations in the delay of the braking system due to different processing and mechanical structures. In addition, the delay of the braking system will change due to maintenance, long-term work, and deformation of the mechanical structure.

When the anti-collision automatic braking function is applied to active safety, even if the delay deviation is small, since the braking distance = vehicle speed * time, when the vehicle speed is fast, the deviation of the braking distance may result in the final collision

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