EPS用永磁同步电机无位置传感器混合控制  

Hybrid Sensorless Control of Permanent Magnet Synchronous Motor for Electric Power Steering System

作　　者：孙可[1] 陈慧[1] 

机构地区：[1]同济大学汽车学院,新能源汽车工程中心,上海201804

出　　处：《汽车工程》2013年第11期991-995,共5页Automotive Engineering

基　　金：国家重点基础研究发展计划(973计划)项目(2011CB711200)资助

摘　　要：本文中探讨了基于D状态观测器和高频信号注入法的无位置传感器混合控制策略,用于电动助力转向系统的永磁同步电机转矩控制的可行性。提出了算法切换区间内信息融合的方法和转子位置的估计方法。通过仿真实验,分析了混合控制下电机输出转矩的波动及其频率成分。仿真结果表明:该方法可以实现全速域内无位置传感器的转子位置估计,电机转矩波动小于5%,满足电动助力转向系统的技术要求。In this paper, the feasibility is investigated of using hybrid sensorless control strategy based on D-state observer method and high-frequency signal injection algorithm for the torque control of permanent magnet synchronous motor in electric power steering system, and the methods of information fusion in algorithm switching interval and rotor position estimation are proposed. The fluctuation of motor output torque and its frequency components under hybrid control are analyzed with simulation experiment. The results show that the scheme proposed can achieve the estimation of rotor position without position sensor in full speed range with a motor torque ripple less than 5%, meeting the technical requirements of electric power steering system.

关 键 词：电动助力转向 永磁同步电机 D状态观测器 高频信号注入 无位置传感器混合控制 

分 类 号：TM341[电气工程—电机]