电工技术学报2017，Vol.32Issue(5)：26-32,7.
圆筒型永磁直线同步电机用线性霍尔位置检测的误差补偿
Error Compensation of Linear Hall Based Position Detection for Tubular Permanent Magnetic Linear Synchronous Motor
摘要
Abstract
Position detection based on linear hall sensors for permanent magnetic linear synchronous motor exists error.To tackle this problem, a compensation method combing offline calibration and online Kalman filter was proposed.Errors of hall sensor signals could be classified as DC offset, amplitude imbalance and containing harmonics.The former two factors generate 1st and 2nd order errors in position detection result, and are compensated by offline calibrating use the offset error and amplitude error and ratio achieved by two hall signals.Harmonics in hall sensor signals are caused by air-gap magnetic distortion, the magnetic harmonic content is analyzed by using finite element simulation, coming to the conclusion that magnetic distortion would generate 4th order error in position detection result.So, online Kalman filter was utilized to extract fundamental component from hall signals and to eliminate the influence of harmonics.Experimental results show that the position detection error is reduced by 81%, indicating the validity of the proposed compensation method.关键词
永磁直线同步电机/线性霍尔传感器/误差补偿/有限元分析/Kalman滤波Key words
Permanent magnet linear synchronous motor/linear hall sensors/error compensation/finite element analysis/Kalman filter分类
信息技术与安全科学引用本文复制引用
严乐阳,叶佩青,张勇,张辉..圆筒型永磁直线同步电机用线性霍尔位置检测的误差补偿[J].电工技术学报,2017,32(5):26-32,7.基金项目
国家科技支撑计划资助项目(2015BAI0B16). （2015BAI0B16）
