| Title |
Instantaneous Frequency Estimation of the Gaussian Enveloped Linear Chirp Signal for Localizing the Faults of the Instrumental Cable in Nuclear Power Plant |
| Authors |
이춘구(Lee, Chun Ku) ; 박진배(Park, Jin Bae) ; 윤태성(Yoon, Tae Sung) |
| DOI |
https://doi.org/10.5370/KIEE.2013.62.7.987 |
| Keywords |
Cable fault localization ; Weighted robust least squares ; Gaussian chirp signal ; Reflectometry ; Instantaneous frequency estimation ; Auto-regressive model |
| Abstract |
Integrity of the control and instrumental cables in nuclear power plant is important to maintain the stability of the nuclear power plants. In order to diagnose the integrity of the cables, the diagnostic methods based on reflectometry have been studied. The reflectometry is a non-destructive method and it is applicable to diagnose the live cables. We introduce a Gaussian enveloped linear chirp reflectometry to diagnose the cables in the nuclear power plants. In this paper, we estimate the instantaneous frequency of the Gaussian enveloped linear chirp signal by using the weighted robust least squares filtering to localize the impedance discontinuities in the class 1E instrumental cable. |