Blind Separation of Remote Field Eddy Current Defect Signal from Magnetic Perturbation Based on Independent Component Analysis
Abstract: According to influence of magnetic perturbation in remote field eddy current defect detection, a novel blind separation technique based on independent component analysis was proposed. Firstly, finite element method was adopted to declare the applicability of independent component analysis in remote field eddy current. Secondly, a new method based on real part and imaginary part rather than amplitude and phase signal was proposed, and simulation and experiment was implemented to verify it. At last, a conclusion could be deduced from simulation and experiment results as followed: the influence of magnetic perturbation could be eliminated significantly by using independent component analysis.
文章引用: 徐小杰 , 裴文林 , 张浩杰 (2015) 基于传感器阵列和独立分量分析的远场涡流缺陷信号盲分离技术研究。 电磁分析与应用， 4， 7-17. doi: 10.12677/EAA.2015.42002
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