Proceedings of the Korea Committee for Ocean Resources and Engineering Conference (한국해양공학회:학술대회논문집)
- 2001.10a
- /
- Pages.169-173
- /
- 2001
Decoupling of Free Decay Roll Data by Discrete Wavelet Transform
이산 웨이블렛 변환을 이용한 자유감쇠 횡요 데이타의 분리
-
Kwon, Sun-Hong
(Dept. of Naval Architecture & Ocean Engineering, Pusan National University)
;
- Lee, Hee-Sung (Dept. of Naval Architecture & Ocean Engineering, Pusan National University) ;
-
Lee, Hyoung-Suk
(Hyundai Heavy Industries Co. Ltd.)
;
- Ha, Mun-Keun (Shipbuilding and Plant R&D Center, Samsung Heavy Industries Co. Ltd.)
- Published : 2001.10.01
Abstract
This study presents the results of decoupling of free decay roll test data by discrete wavelet transform. Free roll decay test was performed to decide the coefficients of damping terms in equation of motion. During the experiment, a slight yaw motion was found while the model was in the free roll decay motion. Discrete wavelet transform was applied to the signal to extract the pure roll motion. The results were compared to those of the Fourier transform. DWT was able to decouple the two signals efficiently while the Fourier transform was not.
Keywords
- Decoupling;
- Fourier transform;
- Wavelet analysis;
- Continuous wavelet transform;
- Discrete wavelet transform
- 분리;
- 퓨리에 변환;
- 웨이블렛 분석;
- 연속 웨이블렛 변환;
- 이산 웨이블렛 변환;