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파워최소법을 이용한 원통형 구조물의 진동감소 성능 분석
강명환(Myunghwan Kang),배수룡(Soo-Ryung Bae),정우진(Woo-jin Jung) 한국소음진동공학회 2017 한국소음진동공학회 논문집 Vol.27 No.5
Underwater radiation noise(URN) is one of the primary source to detect underwater weapon systems like submarine and warship. At a low frequency range, tonal noise is originated from structure borne noise of the equipment. In order to reduce this tonal noise, the active isolation of the transmission of structure-borne noise is necessary. In this study, active vibration reduction method using total power minimization is applied for reduction of total vibration of a raft structure in ship. An numerical analysis shows the effectiveness of vibration reduction at both resonant and off-resonant frequencies and importance of control excitation position. An experimental performance analysis is carried out for the feasibility of active vibration reduction method using total power minimization.