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Article Abstract
In order to solve the problem that the system parameters will be offset during the detection process of the pulsed eddy current receiving coil, this paper first analyzes the response signal of the receiving system and the deconvolution process of the response signal, and discusses the influence of various system parameters on the deconvolution accuracy. A method is proposed to change the system response characteristics and apply a step signal through the excitation coil to realize parameter identification through the response of the receiving coil system. The error of feature extraction under the change in each parameter is discussed, and the influence of increasing the matching resistance and switching the capacitor in parallel on the identification accuracy is analyzed and compared. It is proposed to realize the accurate identification of the receiving system through the Newton method. It is proved from both simulation and experiment that the method proposed in this paper can realize the identification of the receiving coil parameters efficiently, conveniently, and accurately, and can improve the inversion accuracy of the pulsed eddy current detection signal and improve the detection accuracy.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC12252360 | PMC |
| http://dx.doi.org/10.3390/s25134049 | DOI Listing |
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