电子机械制动系统在汽车自适应巡航控制中的应用

Application of Electromechanical Brake System in Adaptive Cruise Control

汽车采用电子机械制动系统(EMB)后具有易于集成ABS/ESP/ACC等电控系统的特点,自适应巡航控制系统(ACC)要求汽车必须具有主动制动功能,对EMB集成ACC功能进行了探索性研究。给出了相应的ACC控制算法,搭建了包括发动机模型、EMB模型、整车模型、ACC控制算法及三维虚拟场景的离线仿真平台,进行了2种典型工况下的仿真研究。结果表明,ACC控制算法通过调用EMB,可以有效地降低ACC车的速度,从而精确地控制两车间距;虚拟场景能直观反映两车速度及相对距离的变化,更有利于用户对控制算法的优化。

Because electromechanical brake （abbr. EMB） can be integrated with ABS/ESP/ACC very easily and adaptive cruise control （abbr. ACC） requires the car with the function of active brake, the primary research of ACC based on EMB was given. For this purpose, the out-line simulation platform including mathematical models for engine, EMB, vehicle, ACC arithmetic and virtual scene has been built and the simulation on two typical follow conditions was given. The results showed that the ACC based on EMB could control the velocity of ACC vehicle and the headway of cars effectively and the virtual scene could show the change for headway of cars and velocity of vehicles intuitively, so it is helpful for us to optimize control algorithm.