关于冬季车辆防滑刹车优化控制仿真  

Optimization Control Simulation of Vehicle Anti-Skid Braking in Winter

作　　者：苏洁 苗佳 赵戎 

机构地区：[1]内蒙古农业大学建筑工程技术系,内蒙古包头014109 [2]内蒙古农业大学车辆工程技术系,内蒙古包头014109

出　　处：《计算机仿真》2018年第1期132-135,共4页Computer Simulation

摘　　要：对冬季车辆防滑刹车的优化控制,能够有效提高冬季车辆行驶安全性。对冬季车辆刹车的滑移区间的控制,需要推导出刹车滑移的动力学模型,通过调节刹车制动压力来控制滑移区间,完成对车辆刹车的优化控制。传统方法通过设计车辆防滑刹车系统,求取车辆轮胎与路面之间的结合力,但忽略了对滑移区间的研究,导致控制效果不理想。提出基于自适应模糊控制器的滑移区间控制方法,计算冬季车辆行驶过程中的动力学模型状态空间表达式,通过调节刹车制动压力来控制滑移区间;对刹车滑移率误差、误差变化率和控制量所取的模糊子集论域进行计算,通过改变三个比例因子能够改变自适应模糊控制器控制规则,保证刹车系统平稳,消除抖振。实验表明,所提方法能够将刹车滑移区间控制在最佳范围内,且在最短的时间内将车辆刹车系统调整到最佳工作状态,具有较好的鲁棒性。ABSTRACT：A control method for the sliding interval based on self-adaptive fuzzy controller was proposed. The state space expression of dynamic model in the vehicle running is calculated. Moreover, the slip range is controlled by adjusting the brake pressure. Furthermore, discourse domain of fuzzy subset is obtained, the error of brake slip rate, the rate of error change and the controlled quantity are calculated. The control rule of self-adaptive fuzzy controller is adjusted by changing the three scaling factors, thus the brake system is stable, and the buffeting is eliminated. Simu- lation results prove that the proposed method can control the braking slip range within the optimal range and adjust the vehicle braking system to the best working status in the shortest time, which has strong robustness.

关 键 词：冬季 车辆防滑 刹车控制 滑移区间 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]