基于模糊推理的车辆跟驰行驶仿真研究

Car-following model based on fuzzy reasoning theory

针对车辆跟驰行驶过程中的安全性和舒适性问题,利用模糊理论对车辆跟驰行驶进行仿真研究。根据车辆的制动过程得到车辆行驶的最小安全距离和期望间距,根据两车之间的相对速度和车间距,建立一个双输入单输出的车辆跟驰行驶模糊推理系统。采用该方法对前导车匀速和匀减速2种工况进行仿真,仿真结果表明,采用模糊推理的车辆跟驰行驶系统能够实现与前导车保持期望间距安全行驶,保证了乘坐舒适性。

For the problem of safety and comfort of the car-following,the fuzzy simulation is used to study the computer simulation.According to the car＇s braking process,the minimum safety distance and the desired spacing of the vehicle travel are obtained.Based on the fuzzy reasoning theory,a two-input and single-output car-following travel model fuzzy control system is established by the relative speed and the distance between the two vehicles.This method is used to simulate the two conditions of constant speed and uniform speed of the leading vehicle.The simulation results show that the vehicle based on fuzzy reasoning can realize the safe driving with the leading vehicle to keep the expected distance and ensure the ride comfort.