|
| Simulation Research on Corrosion Degradation of Avionics Connectors |
| Received:August 22, 2023 Revised:October 10, 2023 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2023.12.015 |
| KeyWord:electrical connector corrosion degradation equivalent circuit impedance parameters signal transmission simulation |
| Author | Institution |
| DU Yi-jiang |
School of Basic Sciences for Aviation, Naval Aviation University, Shandong Yantai , China |
| YU Da-zhao |
School of Basic Sciences for Aviation, Naval Aviation University, Shandong Yantai , China |
| LIU Qi |
School of Basic Sciences for Aviation, Naval Aviation University, Shandong Yantai , China |
|
| Hits: |
| Download times: |
| Abstract: |
| The work aims to explore the changes in contact impedance of avionics connectors when they undergo corrosion degradation, and to study the impact of corrosion degradation on signal transmission of avionics connectors. This article first studied the mechanism of corrosion degradation of avionics connectors, established their equivalent circuit models, and then conducted simulation studies on low-frequency and RF electrical connectors, extracted impedance parameters, and analyzed the impact of corrosion degradation on signal transmission. The simulation results showed that the contact resistance increased obviously with the increase of the corrosion degree, while the contact inductance changed little. The contact capacitance increased with the increase of the corrosion area of the contact surface, and decreased with the increase of the corrosion thickness between the contact surfaces. The contact resistance increased with the increase of frequency, and the contact inductance and contact capacitance remained basically unchanged with the increase of frequency. The contact impedance presented inductive characteristics at low frequency and capacitive characteristics at high frequency. The impedance amplitude first increased and then decreased with the increase of frequency, and the peak appearred at the inductive and capacitiveconversion frequency, which would be reduced by the corrosion degradation. For low-frequency signals, corrosion degradation will lead to signal attenuation and delay. For high-frequency signals, extreme values of return loss, insertion loss and VSWR will appear at the conversion frequency. |
| Close |
|
|
|