基于电阻在线估计的电动助力转向感应电机控制  

Control of induction motor for electric power steering based on on-line resistance identification

作　　者：赵飞翔[1] 张建伟[1] 郭孔辉[1] 张立浩[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）》2014年第1期5-10,共6页Journal of Jilin University:Engineering and Technology Edition

基　　金：'973'国家重点基础研究发展计划项目(2011CB711201);国防基础科研项目(B2220110006)

摘　　要：针对电动助力转向系统中感应电机的力矩控制精度和响应速度问题,建立了电动助力转向系统数学模型,分析了在应用同步坐标系下的电流模型进行磁链观测时,电机转子电阻变化对力矩控制精度的影响。采用前馈反馈综合控制和电阻在线辨识的方法对感应电机的电流跟随速度和力矩控制精度进行改善。通过仿真表明,该方法可以显著提高电动助力转向系统中感应电机力矩控制的响应速度和控制精度。In order to improve the torque control accuracy and response in Electric Power Steering （EPS） using induction motor, an EPS mathematical model was established. When using D Q current model as the rotor flux observer, the impact the of the variation of rotor resistance on the torque control was analyzed. The feedforward and feedback integrating control and on-line resistance identification were employed to improve the accuracy of torque control and current tracking response. Simulation results show that the proposed method can significantly improve the current response speed and accuracy in induction motor control of EPS system.

关 键 词：车辆工程 电动助力转向 感应电机 助力特性曲线 前馈控制 电阻在线辨识 

分 类 号：U463.4[机械工程—车辆工程]