The invention provides a vehicle control method and system in an emergency braking scene. According to the method, the target slip rate range is dynamically adjusted by establishing an optimal slip rate data set under different road surface conditions and combining a digital model to simulate contact characteristics of tires and road surfaces; collecting vehicle motion state data, analyzing abrupt change characteristics and a tire stress change trend, and generating an early warning signal; inputting the target slip rate range and the early warning signal into a predictive control model, calculating the braking force of each wheel and generating a control instruction; simulating an expected slip state by using a digital tire model, and determining a pressure control value by referring to a friction force change rule; by comparing actual measurement and simulation results and combining with the pressure change rate of the brake hydraulic system, model parameters are corrected, and a pressure control value is adjusted, automatic adjustment of the brake force is achieved. According to the technical scheme, the stability and safety of the vehicle under the emergency braking condition are remarkably improved.
本申请提供一种紧急制动场景下的车辆控制方法和系统。本方法通过建立不同路面条件下的最佳滑移率数据集合,结合数字模型模拟轮胎与路面接触特征,动态调整目标滑移率范围;采集车辆运动状态数据,分析突变特性和轮胎受力变化趋势,生成预警信号;将目标滑移率范围和预警信号输入预测控制模型,计算各车轮制动力并生成控制指令;利用数字轮胎模型模拟预期滑移状态,参照摩擦力变化规律确定压力控制值;通过比较实际测量与模拟结果,结合制动液压系统压力变化速率,修正模型参数,调整压力控制值,实现制动力自动调节。本申请提供的技术方案显著提高了车辆在紧急制动情况下的稳定性与安全性。
Vehicle control method and system in emergency braking scene
一种紧急制动场景下的车辆控制方法和系统
09.05.2025
Patent
Elektronische Ressource
Chinesisch
IPC: | B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF |
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