轮速信号在定速巡航控制中的应用

Wheel Speed Signal Application for Automobile Cruise Control

在车辆行驶过程中车速传感器受到来自路面、后驱动桥、传动轴震动影响,导致车速传感器因外力振动输出给发动机控制模块(ECU)的车速信号波动幅度大,使定速巡航定速不稳,因此引入比车速传感器输出精度更高及更可靠的轮速信号作为第一车速信号,车速传感器信号作为第二路车速信号,以提高在中高速工况下定速巡航的可靠性及行车安全。

The speed sensor is affected by the vibration of road surface,rear drive axle and transmission shaft,which results in the large fluctuation of the speed signal output from the speed sensor to the engine control module（ECU）due to the external force vibration,and the cruise speed is unstable,so the output precision of the speedsensor is higher than that of the speed sensor. And more reliable wheel speed signal as the first speed signal,speed sensor signal as the second speed signal,to improve the reliability of speed cruise and traffic safety atmedium and high speed conditions.