基于路感的电动液压助力转向系统优化设计  

Optimal Design of Electro-Hydraulic Power Steering System Based on Road Feel

作　　者：解后循[1,2] 高翔[1] 

机构地区：[1]江苏大学汽车与交通工程学院,江苏省镇江市212013 [2]苏州农业职业技术学院,江苏省苏州市215008

出　　处：《农业装备与车辆工程》2015年第2期25-30,共6页Agricultural Equipment & Vehicle Engineering

摘　　要：对电动液压助力转向系统方向盘反馈力矩数学模型进行了分析,提出采用液压阻尼系数及阻力系数进行建模,给出了阻尼及助力系数表达式。针对车辆高速驾驶需要精确路感反馈的要求,提出以方向盘路感最优为目标的优化设计方法,实例优化计算结果表明了该方法能有效提高方向盘动态反馈力矩的精度。理论分析证明该优化系统阻尼比为0.5,与实例数值计算结果一致,证明了该优化方法的正确性。A new method, which uses hydraulic power and damping coefficients to model electro-hydraulic power steering system, is presented. In order to meet the requirement of accurate steering wheel torque in high speed driving, an optimization design method is put forward based on road feel. Example design and simulation results show that the method can effectively improve the accuracy of steering wheel torque. Theoretical analysis shows that the damping ratio of the optimized system is 0.5,which is consistent with the example design result and proves the validity of the optimization method.

关 键 词：电动液压 助力转向系统 路感 优化设计方法 建模方法 

分 类 号：U463.44[机械工程—车辆工程]