http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
웨이블렛 변환과 신경망 알고리즘을 이용한 회전기기 결함진단
최태묵(TAE-MUK CHOI),조대승(DAE-SEUNG CHO) 한국해양공학회 2002 韓國海洋工學會誌 Vol.16 No.5
The fault detection and diagnosis of rotating machinery widely used in plants including the ship are important for maintaining the performance of plants. Recently, the wavelet transform has been recognized an efficient method to detect a little variation of physical quantities by the synchronous localization of time and frequency domains using the translation and dilation of signals. In this paper, in order to develop efficient and reliable fault detection and diagnosis system of rotating machines, the performance of wavelet transformation to detect a little variation of machine status and neural network to diagnose the cause of machine faults are investigated and experimented.
김국현(Kookhyun Kim),김진형(Jin-Hyeong Kim),최태묵(Tae-Muk Choi),김윤환(Yun-Hwan Kim),조대승(Dae-Seung Cho) 한국해양공학회 2009 韓國海洋工學會誌 Vol.23 No.6
The radar cross section (RCS) of a warship is one of the most important design features in terms of her survivability in hostile environments. Ocean waves continuously changes the attitude of an objective warship to hostile radar and distorts the RCS as a result. This paper presents a dynamic RCS analysis technique and procedure that considers temporal ship motion. First, data sets are prepared for ship motions in 6 degrees of freedom, which are numerically simulated for an objective warship via frequency to time domain conversion with response amplitude operators and specified ocean wave spectra. Second, a series of RCS analysis models are transformed geometrically by referring to ship motion data sets. Finally, temporal RCS analyses are carried out with the RCS simulation code, SYSCOS. As an example, RCS analysis results are given for a virtual warship, which show that ship motions temporally change RCS values and cause RCS reduction compared with static value in terms of mean values.
노인복지시설의 안전운영을 위한 가상현실기반 인명탈출 융복합연구
김남숙(Nam Sook Kim),오영란(Young Ran Oh),최태묵(Tae Muk Choi) 사회복지정책실천회 2015 사회복지정책과 실천 Vol.1 No.1
본 연구는 사회복지시설(노인복지시설)을 포함한 육상/해상 구조물에 대한 실용적인 인명탈출 시뮬레이션이 가능한 소프트웨어(SW)개발을 목표로 사회복지학과 조선해양공학의 융복합연구이다. 화재등과 같은 위기상황에서 생명구조에 대한 인명탈출 환경 및 객체(탈출주체) 모델링 기술과 인명탈출 시뮬레이션 기술 및 분석/결과 가시화 기술 등을 개발하고자 남구노인복지 관에서 이용자들을 대상으로 탈출 시험 절차 개발 및 평가 방법을 도출하였 다. 이런 과정을 통해 국내 최초 IMO Guideline을 만족하는 인명탈출 시뮬레 이션 S/W 개발에 성공하였으며 본 연구의 함의와 향후 추진계획을 결론에서 다루었다. One of the most important issues in the operation of social welfare facility is safety of life under emergency situations such as fire. Although it is compulsory to equip safety management manual and fire safety facilities under laws and regulations, safety assessment is based on qualitative decision. This study is a convergence approach on safe evacuation of social welfare facility with shipbuilding engineering. The aim of this study is to make software that assesses life safety through quantitative assessment method and direct experiment on factors under emergency situations in the welfare facility for the aged.