發(fā)布時間：2018-04-21 06:20

  本文選題：永磁直線同步電機 + 線性霍爾傳感器�。� 參考：《電工技術學報》2017年05期

【摘要】：分析了圓筒型永磁直線同步電機采用線性霍爾傳感器進行位置檢測時存在的誤差,并提出了一種離線標定和在線Kalman濾波相結合的誤差補償方法。霍爾傳感器信號的誤差形式包括存在直流偏置、兩路信號幅值不相等和信號中含有諧波等。前兩種誤差形式分別會在位置檢測結果中產生基頻和2倍基頻誤差,對此通過離線標定的方式獲得兩路信號的直流偏置和幅值比,并補償?shù)皆夹盘栔�。霍爾信號中的諧波由氣隙磁場畸變引起,利用有限元仿真分析了磁場中的諧波含量,分析表明磁場畸變會導致位置檢測產生4倍基頻誤差,對此采用在線Kalman濾波提取霍爾信號中的基波分量,消除了諧波分量的影響。實驗結果表明,補償后的位置檢測誤差減小了81%,從而驗證了該補償方法的有效性。
[Abstract]:In this paper, the errors in position detection of cylindrical permanent magnet linear synchronous motor using linear Hall sensor are analyzed, and an error compensation method combining off-line calibration and on-line Kalman filtering is proposed. The error forms of Hall sensor signal include the existence of DC bias, the unequal amplitude of two signals and the existence of harmonics in the signal. The first two kinds of errors can produce fundamental frequency error and double fundamental frequency error in the position detection results respectively. The DC bias and amplitude ratio of the two signals are obtained by off-line calibration and compensated to the original signal. The harmonic in Hall signal is caused by the air gap magnetic field distortion. The harmonic content in the magnetic field is analyzed by finite element simulation. The analysis shows that the magnetic field distortion will lead to 4 times fundamental frequency error in position detection. In this paper, the fundamental component of Hall signal is extracted by on-line Kalman filter, and the influence of harmonic component is eliminated. The experimental results show that the position detection error after compensation is reduced by 81s, which verifies the effectiveness of the compensation method.
【作者單位】： 清華大學機械工程系;清華大學摩擦學國家重點實驗室;清華大學精密超精密制造裝備與控制北京市重點實驗室;
【基金】：國家科技支撐計劃資助項目(2015BAI0B16)
【分類號】：TM341

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本文編號：1781272