基于电动助力转向的线控转向汽车路感反馈控制  

Road feel feedback control for steer by wire system based on electric power steering

作　　者：郑宏宇[1] 宗长富[1] 何磊[1] 王祥[1] 

机构地区：[1]吉林大学汽车仿真与控制国家重点实验室,长春130022

出　　处：《吉林大学学报（工学版）》2013年第1期1-5,共5页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金项目(51105165);吉林大学科学前沿与交叉学科创新项目(201103165);中国博士后科学基金项目(2012T50291)

摘　　要：针对线控转向(SBW)系统路感需要模拟生成的问题,建立了SBW系统动力学模型并研究路感产生机理。在分析电动助力转向(EPS)系统助力特性等控制算法的基础上,提出了综合路感模拟控制算法。算法中的转向系统齿条受力信息通过测量转向电机工作电流获取。选取中心区和双纽线试验工况,进行硬件在环试验。试验结果表明,本文的路感模拟方法保证了汽车低速转向轻便和高速路感清晰,可以满足驾驶员的路感反馈需求。A dynamics model was built for the steer-by-wire（SBW） system to study the road feel generation mechanism to deal with the need of simulative generation of road feel of SBW system. Based on the analysis of the assist characteristic the returnability and the active damping control strategy of the electric power steering （EPS） system, an integrated road feel simulation control algorithm was proposed. In the algorithm, the EPS rack force information was acquired by measuring the steering motor current. The hardware-in-the-loop tests were performed under on-center and lemniscate test conditions. The results show that the proposed road feel simulation method guarantees the steering easiness at low speeds and road feel clearness at high speeds, satisfying the driver need for road feel feedback.

关 键 词：车辆工程 路感反馈 电动助力转向 线控转向 硬件在环试验 

分 类 号：U463.4[机械工程—车辆工程]