电子稳定控制系统的线控制动控制策略研究  

Research on brake-by-wire control strategy of electronic stability controller

作　　者：屈紫君 夏怀成[1] 尚东星 柴晓东 杨树军[1] Qü Zijun;XIA Huaicheng;SHANG Dongxing;CHAI Xiaodong;YANG Shujun(School of Vehicles and Energy,Yanshan University,Qinhuangdao,Hebei 066004,China)

机构地区：[1]燕山大学车辆与能源学院,河北秦皇岛066004

出　　处：《燕山大学学报》2020年第5期436-441,449,共7页Journal of Yanshan University

基　　金：国家自然科学基金资助项目(51675462)。

摘　　要：针对线控制动过程中压力跟随精度不高的问题,建立了基于电子稳定控制系统的线控制动模型,设计了一种逻辑门限控制与模糊控制有机结合的复合控制策略。利用逻辑门限控制选择不同的压力模式,将压力误差控制在较小的范围;通过模糊控制来动态修正压力误差,进一步缩小误差范围。选用AMESim液压仿真软件与Simulink进行联合仿真分析,并利用实车测试,在高附路面上验证了控制策略的有效性。结果表明:所设计的控制策略使轮缸压力可以很好的跟随目标压力,响应延迟不超过300 ms,响应速度快,稳态压力误差控制在±0.15 MPa内,具有良好地制动控制效果,可实际应用于辅助驾驶和无人驾驶系统,且仿真过程能够实时反映各个参数对系统的影响,为实车调试节约了时间及成本。Aiming at the low precision of pressure following in the process of brake-by-wire control,a brake-by-wire control model based on electronic stability control system is established,and a composite control strategy combining logic threshold control and fuzzy control is designed.The logic threshold control is used to select different pressure modes to control the pressure error to a small range;the fuzzy control is used to dynamically correct the pressure error to further narrow the error range.The AMESim hydraulic simulation software was used to perform joint simulation analysis with Simulink,and the real vehicle test was used to verify the effectiveness of the control strategy on the high-attached road surface.Results show that the control strategy of the wheel cylinder pressure can well follow the target and the response delay no more than 300 ms,fast response and steady state error control within±0.15 MPa.It has good braking control effect and can be practically applied to assisted driving and unmanned systems.The simulation process can reflect the influence of various parameters on the system in real time,saving time and cost for real vehicle debugging.

关 键 词：电子稳定控制系统 线控制动 逻辑门限控制 模糊控制 

分 类 号：U467[机械工程—车辆工程]