The invention provides a vehicle speed control method and a device thereof, and is applied to the technical field of cruise control. The vehicle speed control method comprises the steps that under the condition that the vehicle is in a constant-speed cruise mode, the speed deviation between the actual vehicle speed of the vehicle and the target cruise vehicle speed is obtained; under the condition that the absolute value of the speed deviation is smaller than or equal to an integral separation threshold value corresponding to integral control in a PID algorithm, the numerical value of an integral switching coefficient corresponding to the integral control is adjusted according to the size relation between the absolute value of the speed deviation and at least one integral grading threshold value; and the actual vehicle speed of the vehicle is adjusted through the PID algorithm after the integral switching coefficient is adjusted. According to the technical scheme provided by the embodiment of the invention, the problem that the vehicle speed is unstable due to large PID algorithm change caused by introduction and separation of the integral effect can be solved to a certain extent.
本发明实施例提供了一种车速控制方法及装置,应用于定速巡航技术领域。所述车速控制方法包括:在所述车辆处于定速巡航模式的情况下,获取所述车辆的实际车速与目标巡航车速之间的速度偏差;在所述速度偏差的绝对值小于或等于所述PID算法中的积分控制对应的积分分离阈值的情况下,根据所述速度偏差的绝对值与至少一个积分分级阈值之间的大小关系,调整所述积分控制对应的积分开关系数的数值;通过调整所述积分开关系数后的所述PID算法,调整所述车辆的实际车速。本发明实施例提供的技术方案,可以在一定程度上解决积分作用的引入与分离导致PID算法变化较大,造成车速不稳定的问题。
Vehicle speed control method and device thereof
一种车速控制方法及装置
2022-02-22
Patent
Electronic Resource
Chinese
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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