调整电动转向系统路感的H_∞控制算法  

H_∞ Algorithms of Control System to Adjusting Road Feel of Electric Power Steering System

作　　者：吴文江[1] 杜彦良 季学武[2] 陈奎元[2] 

机构地区：[1]石家庄铁道学院机械工程分院,河北石家庄050043 [2]清华大学汽车安全与节能国家重点实验室,北京100084

出　　处：《中国工程机械学报》2004年第2期145-148,共4页Chinese Journal of Construction Machinery

摘　　要：路感是驾驶员获取路面信息重要途径,它直接影响到汽车操纵的舒适性和安全性.电动转向系统的路感可以通过控制算法加以调整,为了获得特定的路感,将 H_∞控制理论应用于电动转向系统路感的研究,以获得特定频带的路面信息为设计目标,采用线性矩阵不等式处理方法设计了最优 H_∞控制器,应用 Matlab 软件进行了计算机仿真,仿真结果表明,所设计的最优 H_∞控制器能够有效地调整传递到方向盘上的转向阻力频率特性,从而获得所需的路感.Road feel is an important method to get road information for driver.It is indirectly related to the comfort and safety of steering automobile.The road feel of electric power steering system can be adjusted with control algorithms to get special steering feel.To get special frequency band road information is the object of design with H_∞ control theory.H_∞ controller is designed with linear matrix inequalities,and simulation is made with Matalab software.The simulation results prove that H_∞ controller designed is effective on adjusting road feel,and special road feel is gained.

关 键 词：电动转向系统 H∞控制器 路感 仿真 

分 类 号：TP273.1[自动化与计算机技术—检测技术与自动化装置]