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基于电控液压制动系统的车辆稳定性控制策略

, PP. 526-532

Keywords: 自动控制技术,逻辑门限值PI控制,模糊PI控制,电控液压制动系统

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Abstract:

针对带有电控液压制动(EHB)系统的乘用车进行研究,提出了一种新的稳定性控制策略。首先利用模糊推理的方法分别对横摆角速度偏差和质心侧偏角速率的门限值进行确定,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EHB系统上对附加横摆力矩加以实现。另外,还采用模糊PI自整定算法对EHB系统轮缸的目标压力进行优化控制。仿真及实验结果表明:模糊PI自整定算法在EHB的整个工作区段都具有良好的控制效果;当车辆在转向过程中失去稳定时,本文所提出的控制策略能够及时地对车辆进行稳定性控制,提高了车辆在行驶过程中的安全性。

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