Self-adaptive cruise control method and system, vehicle and storage medium

By combining the coordinated control of electric braking and mechanical braking in pure electric vehicles, and utilizing a safe following distance model and an electronic stability control system, the problems of poor braking coordination and low energy recovery efficiency of adaptive cruise control systems have been solved, achieving high-efficiency driving stability and energy recovery, and improving driving safety and comfort.

CN121553129APending Publication Date: 2026-02-24YUTONG COMMERCIAL VEHICLE CO LTD
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Patent Information

Application Number
CN202610023421.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-01-08
Publication Date
2026-02-24

AI Technical Summary

Technical Problem

In existing technologies, the adaptive cruise control systems of pure electric vehicles suffer from poor braking coordination, insufficient driving stability, low energy recovery efficiency, and system response delays. These issues can lead to risks such as wheel lock-up and yaw instability during braking, affecting driving safety and comfort.

Method used

By combining the driving status information of the target vehicle ahead with the vehicle's dynamic parameters, the target deceleration is determined using a safe following distance model. When the conditions for pure electric braking are not met, a cooperative braking mode is entered. The electric braking system provides regenerative braking force, and the electronic stability control system provides mechanical braking force. The mechanical braking force distribution of each wheel is adjusted in a coordinated manner to maintain stable vehicle driving.

Benefits of technology

It achieves efficient coordination between electric braking and mechanical braking, improves driving stability and energy recovery efficiency, avoids wheel lock-up and vehicle instability, and enhances driving safety and comfort.

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Abstract

The invention relates to the technical field of vehicle control, and discloses a self-adaptive cruise control method and system, a vehicle and a storage medium which are applied to a pure electric vehicle, and the method comprises the steps that according to driving state information of a front target vehicle and dynamic parameters of the vehicle, the target deceleration of the vehicle is determined in combination with a safe vehicle following distance model; when it is judged that the pure electric braking condition is not met based on the relation between the target deceleration and the braking force threshold value of the electric braking system and in combination with the real-time battery state of the vehicle, a cooperative braking mode is started; in the cooperative braking mode, the electric braking system is controlled to provide regenerative braking force, and a cooperative braking instruction is sent to the electronic stability control system, so that the electronic stability control system provides mechanical braking force for cooperative braking; the electronic stability control system further adjusts mechanical braking force distribution of all wheels of the vehicle based on the vehicle wheel speed and the vehicle body posture parameters so as to maintain stable running of the vehicle.
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