基于AFS与DYC集成控制提高车辆操纵稳定性的研究  

Improving Vehicle Handling Performance and Stability by Integrated Control of Active Front Steering and Direct Yaw Moment

作　　者：武建勇[1,2] 唐厚君[2] 欧阳涛[1] 许秀香[1] 刘伟[2] 

机构地区：[1]中国汽车技术研究中心,天津300162 [2]上海交通大学自动化系,上海200240

出　　处：《系统仿真学报》2009年第5期1227-1232,共6页Journal of System Simulation

摘　　要：为提高车辆的操纵稳定性,基于线性矩阵不等式方法(LMI)设计了集成车辆前轮主动转向(AFS)与直接横摆力矩控制(DYC)的底盘鲁棒模型匹配控制器(R-MMC)。由于反馈控制变量车身侧偏角在车辆行驶过程中很难测量,还设计了车身侧偏角滑模观测器(SMO)。通过在Slalom和μ-split极限工况下的仿真试验,验证了底盘集成控制器可以显著提高车辆的操纵稳定性和主动安全性,且滑模观测器在幅值和相位上都能准确跟踪车身侧偏角实际值。A new chassis integrated robust mode matching controller （R-MMC） was proposed that cooperated active front steering （AFS） and direct yaw moment control （DYC） to improve vehicle handling performance and stability. The design frame work of the R-MMC is based on linear matrix inequalities （LMI） method. Since vehicle sideslip angle measurement was difficult to achieve in practice, a sliding mode observer （SMO） that required only vehicle yaw rate as the measured input was developed. Performance and robustness of the SMO and the chassis integrated controller were demonstrated under slalom and μ-split maneuvers. Simulation results reveal the satisfactory tracking ability of the SMO, and the superior improves vehicle handling performance, stability and robustness of the integrated control vehicle.

关 键 词：车辆动力学 集成控制 鲁棒模型匹配控制 滑模观测器 

分 类 号：U461.6[机械工程—车辆工程] TP13[交通运输工程—载运工具运用工程]