Magnetic Interference Compensation Using the Adaptive LMS Algorithm

被引：3
|
作者：
Ponikvar, Dusan [1 ,2 ]
Zupanic, Erik [2 ,3 ]
Jeglic, Peter [2 ]
机构：
[1] Univ Ljubljana, Fac Math & Phys, Jadranska 19, SI-1000 Ljubljana, Slovenia
[2] Jozef Stefan Inst, Jamova 39, SI-1000 Ljubljana, Slovenia
[3] Univ Ljubljana, Fac Nat Sci & Engn, Askerceva cesta 12, SI-1000 Ljubljana, Slovenia
来源：
ELECTRONICS | 2023年 / 12卷 / 11期
关键词：
active magnetic interference compensation; adaptive least-mean-square algorithm; magnetic field sensor; mains magnetic interference;
D O I：
10.3390/electronics12112360
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
The aim of this study is to evaluate the method for the compensation of magnetic field interference from the mains, which consists primarily of components with a frequency of 50 (60) Hz and its multiples. The setup compensates for the interfering field using three Helmholtz coils, magnetic field sensors, a digital processing unit, and power amplifiers. The processing unit implements an adaptive least-mean-square (LMS) algorithm to calculate the currents through coils that are necessary for compensation. The prototype fully compensates for interfering with the magnetic field at 50, 150, 250, and 350 Hz down to the noise level of the sensor arrangement within 20 s and reduces higher harmonics. The overall reduction in the rms value of the interfering field is better than 28 dB, and a significantly better reduction is achieved in the frequency range from 0 Hz to 400 Hz.
引用
收藏
页数：11
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