Parameter Identification and Transition Process Online Calibration Method of Pulsed Eddy Current Receiving Coil Based on Underdamped Dynamic Response Characteristics
Abstract
1. Introduction
2. Dynamic Response Analysis of Receiving Coil System
3. Receiving Coil Parameter Identification Method
3.1. Characteristic Analysis of Underdamped Oscillation
3.2. Extraction and Calculation of Receiving Coil Characteristic Parameters
3.3. Nonlinear Identification of System Parameters Based on Newton’s Method
4. Experimental Results
5. Conclusions
- (1)
- The methods of increasing matching resistance and parallel capacitance to change the system state are compared. From the perspective of feature extraction and calculation accuracy of response signal characteristic parameters, the parallel capacitance method is proved to be better.
- (2)
- On the basis of obtaining the accuracy characteristic parameters, the Newton method is used. After parameter identification, the absolute error of the inductance of the receiving coil can be reduced to 0.023%, and the absolute error of the capacitance can be reduced to 0.004956%.
- (3)
- Under experimental conditions, the inductance identification error of the receiving coil can reach 0.17%, and the minimum error of the capacitance parameter can reach 0.038%. The parameter identification method proposed in this paper can efficiently, accurately, and conveniently identify and calibrate the system parameters of the receiving coil online, which is conducive to improving the signal inversion progress and detection accuracy in the pulsed eddy current detection process.
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Resistance (Ω) | 1 | 2 | 4 | 6 | 8 | 10 |
---|---|---|---|---|---|---|
R0 (Ω) | 2.6 | 2.6 | 2.6 | 2.6 | 2.6 | 2.6 |
Receiving Coil Parameters | L (mH) | C (pF) | R (Ω) |
---|---|---|---|
Initial value | 10 | 250 | 2.6 |
Real value | 10.09 | 251.6225 | 2.6 |
Characteristic Parameters | Specific Values |
---|---|
Peak | 2.4631 mV |
Adjacent peak time | 0.0364 ms |
Steady-state value | 1.5017 mV |
Overshoot | 64.03% |
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Zeng, Z.; Wang, J.; Huang, X.; Zuo, Y.; Liu, Y.; Tian, X.; Pei, F.; Liu, K.; Chen, F.; Wang, X.; et al. Parameter Identification and Transition Process Online Calibration Method of Pulsed Eddy Current Receiving Coil Based on Underdamped Dynamic Response Characteristics. Sensors 2025, 25, 4049. https://doi.org/10.3390/s25134049
Zeng Z, Wang J, Huang X, Zuo Y, Liu Y, Tian X, Pei F, Liu K, Chen F, Wang X, et al. Parameter Identification and Transition Process Online Calibration Method of Pulsed Eddy Current Receiving Coil Based on Underdamped Dynamic Response Characteristics. Sensors. 2025; 25(13):4049. https://doi.org/10.3390/s25134049
Chicago/Turabian StyleZeng, Zhiwu, Jie Wang, Xiaoju Huang, Yun Zuo, Yuan Liu, Xu Tian, Feng Pei, Kui Liu, Fu Chen, Xiaotian Wang, and et al. 2025. "Parameter Identification and Transition Process Online Calibration Method of Pulsed Eddy Current Receiving Coil Based on Underdamped Dynamic Response Characteristics" Sensors 25, no. 13: 4049. https://doi.org/10.3390/s25134049
APA StyleZeng, Z., Wang, J., Huang, X., Zuo, Y., Liu, Y., Tian, X., Pei, F., Liu, K., Chen, F., Wang, X., & Wang, J. (2025). Parameter Identification and Transition Process Online Calibration Method of Pulsed Eddy Current Receiving Coil Based on Underdamped Dynamic Response Characteristics. Sensors, 25(13), 4049. https://doi.org/10.3390/s25134049