一种变逻辑门限值的车辆稳定性控制策略研究  

A Study on Vehicle Stability Control Strategy with Variable Threshold

作　　者：李寿涛[1] 马用学 郭鹏程[1] 宗长富[2] Lee Gordon 

机构地区：[1]吉林大学通信工程学院,长春130022 [2]吉林大学汽车仿真与控制国家重点实验室,长春130022 [3]圣地亚哥州立大学电子与计算机工程系,加州92182

出　　处：《汽车工程》2015年第7期782-787,共6页Automotive Engineering

基　　金：吉林省发改委产业技术研究与开发项目(2015Y062);吉林大学科学前沿与交叉学科创新项目(200903305);国家自然科学基金(50775096)资助

摘　　要：本文中提出一种变逻辑门限值的车辆稳定性控制策略,并重点对动态逻辑门限值的确定方法进行了深入的研究,以改善不同工况下车辆的稳定性。由于逻辑门限值受到行驶环境和运动状态的影响,因此利用模糊推理的方法分别确定横摆角速度偏差和质心侧偏角变化率的门限值;然后利用逻辑门限PI控制方法计算出附加横摆力矩;最后在电控液压制动(EHB)系统中实现了附加横摆力矩。仿真结果表明,当车辆失稳时,所提出的控制策略能及时对车辆进行稳定校正控制,提高了车辆行驶的安全性。In order to improve vehicle stability in different road conditions, a vehicle stability control strate- gy with variable logic threshold is proposed with the method of determining dynamic logic threshold emphatically studied. In consideration of the effects of driving environment and movement state on logic threshold, fuzzy inference method is adopted to determine the value of yaw rate deviation and the threshold for sideslip angle changing rate re- spectively. Then additional yaw moment is calculated by using logic threshold PI control method. Finally, additional yaw moment is implemented in an electro-hydraulic brake system. The results of simulation show that when vehicle is in unstable state, the control strategy proposed can timely perform stability correction control, and thus enhance the driving safety of vehicle.

关 键 词：车辆稳定性 动态逻辑门限值 模糊控制器 电控液压制动系统 

分 类 号：U463.6[机械工程—车辆工程]