磁阻式位置传感器半额测试线圈的离散转子位置检测方法研究  

Research on Discrete Rotor Position Estimation of Variable Reluctance Position Sensor Using Half Searching Coils

作　　者：陈辉 张磊 蒋冬青[1] 刘闯[1] 朱姝姝[1] CHEN Hui;ZHANG Lei;JIANG Dongqin;LIU Chuang;ZHU Shushu(College of Automation,Nanjing University of Aeronautics and Astronautics,Nanjing 211106,China;School of Electronic Engineering,Nanjing Xiaozhuang University,Nanjing 211106,China)

机构地区：[1]南京航空航天大学自动化学院,南京211106 [2]南京晓庄学院电子工程学院,南京211106

出　　处：《微电机》2018年第11期50-55,61,共7页Micromotors

基　　金：国家自然科学基金(51377076);江苏省自然科学基金(BK20151574);南京航空航天大学启动基金(YAH17051);中央高校基本科研业务费专项资金(XCA17003-05)资助项目

摘　　要：磁阻式旋转变压器在高速、高温等恶劣环境用作转子位置检测具有突出的优势,但较高的成本限制了应用场合。通过对比开关磁阻电机和磁阻式旋转变压器的结构和工作特点,本文提出了双凸极定转子结构的磁阻式位置传感器方案,使磁阻式位置传感器与SRM结构上保持一致性,可以进一步降低成本;针对多相的磁阻式位置传感器出线多、调理电路复杂的情况,本文提出了一种利用半额测试线圈的磁阻式位置传感器离散转子位置检测的简易检测方法,推导出满足位置检测方法的传感器本体的定转子极弧条件,对测试线圈注入高频激励信号,通过幅值调制得出半数低频位置信号,并虚拟出其对称半数电感曲线和特征值交截的办法,得出多相电机的全额位置信号;最后以四相8/6结构SRM系统为例,通过仿真分析和搭建实验平台验证了四相磁阻式位置传感器的半额测试线圈方法可行性,有效简化了多相磁阻式位置传感器系统复杂性。Variable reluctance resolver has outstanding advantages of rotor position detection in harsh environments such as high speed and high temperature.However,relatively high cost restricts its application.By comparing the structure and characteristics of switched reluctance motor and variable reluctance resolver,variable reluctance position sensor scheme using doubly salient stator/rotor structure was proposed in this paper.In view of the multiphase windings and the conditioning circuit's complexity of the multiphase variable reluctance position sensor,in order to further reduce the cost,the method of detecting the discrete rotor position of 2N phase variable reluctance position sensor using half searching coils was proposed.In addition,the condition of the stator/rotor pole arc satisfying the position detection method was derived.Finally,taking the four phase 8/6 structure SRM as an example,the rationality of proposed method was verified by simulation and experiment.

关 键 词：磁阻式位置传感器 离散转子位置检测 定转子极弧优化 

分 类 号：TM352[电气工程—电机]