汽车自适应巡航的电机控制系统设计

Motor Control System Design for Automotive Adaptive Cruise Control

自适应巡航系统(ACC)利用汽车周围的雷达来检测该汽车周围的情况,对车前某一区域的车速与距离进行判定,自动对车辆速度与跟车距离进行调节。本设计从MATLAB仿真软件出发,对汽车自适应巡航系统的上层控制器和驱动电机进行设计,在Simulink中得到了稳定性强,抗干扰性能高的电机模型;在MATLAB的模糊推理系统中得到了输入Dr(两车距离),Vr(两车速度)与输出加速度a-ses的三维数学模型,从MATLAB的三维模型中可知,该上层控制器曲面光滑程度较好,表明输出接近连续;曲面的起伏较为平缓,表明性能优良,符合设计应用需求。

The adaptive cruise control system(ACC)uses the radar around the car to detect the situation around the car,determines the speed and distance in a certain area in front of the car,and automatically adjusts the speed of the vehicle and the following distance.Based on MATLAB simulation software,the upper controller and drive motor model of the vehicle adaptive cruise system are designed,and a motor model with strong stability and high anti-interference performance is obtained in Simulink.The three-dimensional mathematical models of input Dr(distance between two vehicles),Vr(speed between two vehicles)and output acceleration a-ses are obtained in the fuzzy reasoning system of MATLAB.It can be seen from the three-dimensional model of MATLAB that the surface of the upper controller is smooth,indicating that the output is close to continuous.The fluctuation of the surface is relatively gentle,indicating that the performance is good and meets the design and application requirements.