The invention provides a vehicle following distance control method and device. By using a tracking coordinate system established based on a variable structure sliding mode control theory, a target area where the relative speed value and the relative distance value between a front vehicle and a current vehicle are located can be determined, then the optimal acceleration value is obtained by processing and calculating the acceleration value of the current vehicle according to the type of the target area, and thus a lower-layer controller controls a power system and/or a braking system to complete torque output according to the optimal acceleration value. By designing a system constant-speed area and a system buffer area, the problem that the braking deceleration is not smooth and continuousenough when a front vehicle is cut in and cut out at a short distance is solved, and the riding comfort is improved.
本发明提供了一种车辆跟车距离控制方法及装置,利用基于变结构滑膜控制理论所建立的跟踪坐标系,可以确定前车与本车之间的相对速度值和相对距离值所在的目标区域,进而按照目标区域的类型处理计算得到的本车加速度值得到最优加速度值,从而由下层控制器按照该最优加速度值控制动力系统和/或者制动系统完成扭矩输出。本发明通过设计系统匀速区和系统缓冲区,解决了前车近距离切入切出所出现的制动减速度不够平滑连续的问题,提高了乘坐舒适性。
Vehicle following distance control method and device
一种车辆跟车距离控制方法及装置
2020-07-31
Patent
Elektronische Ressource
Chinesisch
IPC: | B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion |
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