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Error Analysis of Underwater Vehicle under Influence of Disturbance and Time Delay
나윤철(Yun Cheol Na),이정규(Jeong Kyu Lee),권순홍(Sun Hong Kwon),이만형(Man Hyung Lee) 대한전자공학회 1992 대한전자공학회 학술대회 Vol.1992 No.10
The disturbance and time delay can often cause a significant error in the estimation of trajectory of a underwater vehicle. The time delay considered in this study is due to the delayed rudder response to the rudder input from the guidance control part, The simulation tests are performed on maneuver with constant rudder angle, zigzag maneuver, dive-climb maneuver, and corridor pattern maneuver. The results are compared with those of without delay cases.
5.5MW급 아지무스 추진기(azimuth thruster)에 대한 대형 캐비테이션 터널 모형시험
백부근,박영하,김기섭,김주인,나윤철,Paik, Bu-Geun,Park, Young-Ha,Kim, Ki-Sup,Kim, Ju-In,Na, Yun-Cheol 대한조선학회 2015 大韓造船學會 論文集 Vol.52 No.1
The development of an azimuth thruster which has the function of dynamic positioning and propulsion has been greatly required as the demand of vehicles with it increases. To develop or design a reliable azimuth thruster, it is appropriate that the performance and cavitation observation tests should be conducted in the regime of high Reynolds number. In the present study, to satisfy high Reynolds number condition new dynamometer for a large azimuth thruster is manufactured and arranged in the test section of the Large Cavitation Tunnel (LCT). The test method composed of the open water and the cavitation observation tests is established successfully in LCT, considering the thruster design.