The invention discloses an acceleration constraint control algorithm for a vehicle cruise control system, which is used for constraining the acceleration of a cruise control vehicle in the speed switching process from the fuel consumption of the vehicle and the riding comfort of passengers. According to the invention, the asymmetric obstacle Lyapunov function is introduced into the design of the cruise control speed-acceleration controller; the controller controls the wheel torque, the problem that the acceleration degree is too large when the cruise control speed is switched is solved, the proposed algorithm can ensure that the acceleration speed always works in a comfort level area, and the fuel consumption of an automobile is also well improved under the condition that constraint conditions are not violated. In the process, the braking torque and the wheel rotating speed do not shake, and the comfort of the vehicle is further improved.
本发明公开了一种车辆定速巡航系统加速度约束控制算法,从车辆燃油消耗量以及乘客乘坐舒适性出发,对定速巡航的车辆在速度切换过程中的加速度进行约束。本发明将非对称障碍李雅普诺夫函数引入到定速巡航速度—加速度控制器的设计中来,控制器通过控制车轮转矩,解决了在定速巡航速度切换时加速度过大的问题,所提出的算法能够保证加速度始终工作在舒适度区域内,在不违反约束条件下,汽车的燃油消耗量也有较好的改善。在此过程中,制动力矩和车轮转速未发生抖动,进一步提高了车辆的舒适性。
Acceleration constraint control algorithm for vehicle cruise control system
一种车辆定速巡航系统加速度约束控制算法
2020-06-05
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 |
Vehicle cruise control apparatus and vehicle cruise control method
Europäisches Patentamt | 2019
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