제어로봇시스템학회:학술대회논문집
- 제어로봇시스템학회 2000년도 제15차 학술회의논문집
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- Pages.522-522
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- 2000
Pre-filtering and Location Estimation of a Loose Part
- Kim, Jung-Soo (Korea Atomic Energy Research Institute MMIS Team) ;
- Kim, Tae-Wan (Korea Atomic Energy Research Institute MMIS Team) ;
- Joon Lyou (Dept. of Electronics Engineering, Chungnam National Univ.)
- 발행 : 2000.10.01
초록
In this paper, two pre-filtering techniques are presented for accurately estimating the impact location of a loose part. The reason why a pre-filterng technique Is necessary in a Loose Part Monitoring System is that the effects of background noise on the signal to noise ratio (SNR) can be reduced considerably resulting in improved estimation accuracy. The first method is to take d moving average operation in the time domain. The second one is to adopt band-pass filters designed in the frequency domain such as a Butterworth filter, Chebyshev filter I & II and an Elliptic Filter. To show the effectiveness, the impact test data (signals) from the YGN3 power plant are first preprocessed and then used to estimate the loose pan impact position. Resultantly. we observed that SNR is much improved and the average estimation error is below 7.5%.
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