데드비트 및 디지털 반복제어에 의한 고차 체인드 시스템의 제어

남택근,Nam, Taek-Kun 한국마린엔지니어링학회 2007 한국마린엔지니어링학회지 Vol.31 No.4

In this paper a state steering strategy for high order chained system is presented. High order chained system can be derived from the acceleration constraints that cannot be integrable. The system classified as a nonholonomic system cannot be controlled to its equilibrium points by continuous and time-invariant controller. Using variable transformation two sub system can be obtained from the high order chained system. Deadbeat control and iterative state steering methods are proposed to control the system. Simulation results are given to show the effectiveness of the proposed control scheme.

진동계측 시스템의 구축과 실습선 내 거주성에 미치는 진동 평가에 관한 연구

남택근,김득봉,이돈출,Nam, Taek-Kun,Kim, Deug-Bong,Lee, Don-Chcol 해양환경안전학회 2010 해양환경안전학회지 Vol.16 No.1

Vibration on the ship was generated mainly by main engine and propeller. The vibration which is generated from the ship has an effect on durability of ship's machinery and it also has an evil influence on the working conditions for crew. In this research, vibration measurement system to measure ship's vibration was built and vibration signals using acceleration sensors were measured from an accomodation space of training ship. An evaluation of vibration with regard to habitability was also discussed and the evaluation process followed the guidelines ISO6954:2000E.

호남지역 Sea Grant 사업단의 발전방향에 관한 연구

남택근,이돈출,임정빈,Nam, Taek-Kun,Lee, Don-Chool,Yim, Jeong-Bin 해양환경안전학회 2007 해양환경안전학회지 Vol.13 No.3

In this paper, the strategic plan for Honam Sea Grant College Program will be discussed. The main activity area of Hanam SGCP is research and development, education and public information, outreach. Honam SG theme areas and priorities of its activity area will be determined to enhance the sustainable use and conservation of marine and fishery resources for Honam region. In the education and public information, marine education program executed by MOMAF and relative institutions is introduced and suitable program direction will be suggested. The network composition between HSGCP and other institution in domestic or abroad is also tackled. An interchange of beneficial information is accomplished through the effective network with other organizations. Finally the result of survey to develop the pending problems of Honam area will be discussed.

비 간섭 슬라이딩 모드 기법을 이용한 로봇 매니퓰레이터의 궤도제어

남택근,Nam Taek-Kun 한국마린엔지니어링학회 2005 한국마린엔지니어링학회지 Vol.29 No.8

The decoupling control using state feedback was once intensively studied during 1960's by many researchers. However, this control scheme was sensitive to the disturbance and Parameter variations. SMC(sliding mode control) is known as a robust control methodology to overcome such a disturbance. In this paper. the decoupling control by means of SM(sliding mode) for a trajectory control of a two-degrees-of- freedom manipulator was discussed. The position and velocity of manipulator tip were adopted to compose a nonlinear error functions. The reference inputs of the controller can be decided by switching function combined with the desired position and velocity. Simulation result is provided to verify the effectiveness of the proposed control scheme.

예인력과 피예인선의 예인 지점과 거동에 관한 연구

남택근,Nam, Taek-Kun 해양환경안전학회 2013 해양환경안전학회지 Vol.19 No.6

In this paper, an analysis results of towing force and towing points which are dominating factors to determine the behavior of towed ship are introduced. The towing force and towing points to achive the desired posture and its position of the towed vessel are derived based on simplified dynamics and linearization method. LQR algorithm for posture control is applied to linearized system and numerical simulation is also executed. Force based on COG(cneter of gravity) and gain of controller to achieve desired posture for target vessel are obtained by using Riccati matrix equation and pseudo inverse matrix is applied to analyze the relation between the derived force and its towing point. Based on this analysis method, towing force need to move the towed vessel from its initial position to target position can be calculated. The towing method including towing point and direction is also considered on this method. Finally, the relation between towing force and towing point is confirmed from the analysis and the results can be applied to arrangement of tug boats during salvage works.

전기추진선박의 최근 동향

남택근,Nam Taek Kun 한국마린엔지니어링학회 2005 한국마린엔지니어링학회지 Vol.29 No.2

양식어장보호를 위한 어장탐지 시스템 개발에 관한 연구

남택근,임정빈,안영섭,Nam, Taek-Kun,Yim, Jeong-Bin,Ahn, Young-Sup 해양환경안전학회 2004 해양환경안전학회지 Vol.10 No.2

In this paper, we study a FDS(fishery detection system) for protection of an aquaculture farm. The FDS will identify a robbing vessel with real time and detect variance of the position of aquaculture farm. We also propose a F-AIS(Fishery- Automatic Identification System), which can detect the object approaching to aquaculture farm and distinguish fishing boats from thief vessel The F-AIS with low price and wideband responsibility will be adopted to the FDS.

Chained form의 제어와 특이점에 관한 연구

남택근(Nam Taek-Kun),노영오(Roh Young-Oh),오세준(Oh Se-Jun) 한국마린엔지니어링학회 2007 한국마린엔지니어링학회 학술대회 논문집 Vol.2007 No.-

A nonholonomic system can be derived from velocity and acceleration constraints which is not integrable. It was interesting object since the nonhlonomic system cannot be stabilized its equilibrium points by time-invariant and continuous controller. In this paper, chained transformation procedure which is a method to control nonholonomic system and singularity occurred during its transformation were introduced.

축계 마력 측정 시스템의 개발에 관한 연구

남택근(Nam Taek Kun),이돈출(Lee Don Chul),노영오(Roh Young Oh),허광석(Heo Gwang Seok) 한국마린엔지니어링학회 2006 한국마린엔지니어링학회 학술대회 논문집 Vol.2006 No.-

In this paper, a development of shaft power measuring system for a rotating machinery is discussed. It is important that the exact power measurement of marine engine since the engine power is related to ship's usage and its shaft design. The engine equipped on the ship is assumed to rotating machine which can generate mechanical power by electrical energy. Two gearwheel and magnetic sensors are applied to measure torsional angle on the shaft. High resolution encoder is also applied to compensate the output signal from gearwheel. The calculation of shaft power is executed using measured signal and angular velocity of rotating machine.

선박의 진동 계측 프로그램 개발에 관한 연구

남택근(Taek-Kun Nam),이돈출(Don-Chul Lee),노영오(Young-Oh Roh) 한국마린엔지니어링학회 2008 한국마린엔지니어링학회 학술대회 논문집 Vol.2008 No.-

본 연구에서는 선박의 진동계측을 위한 프로그램 개발에 대해 언급하고자 한다. 선박에서는 선체진동 및 엔진과 관련 회전기기의 진동을 계측하여 선박의 안전성을 평가하고 엔진과 부속장비에 대한 운전 상태를 분석하게 된다. 이를 위해서는 진동 계측이 필요하고 본 연구에서는 이러한 진동계측 시스템을 경제적이고 콤팩트하게 구성할 수 있는 방법을 제시 및 개발하였다. 개발된 프로그램을 선박 내 거주공간의 진동계측에 활용하였고, 실험을 통하여 진동계측 시스템의 유용성을 확인할 수 있었다. In this paper, a development of vibration measurement program for ships is discussed. Hull vibration and engine vibration were measured to analyze ships safety and to evaluate the operating conditions of engine. Some vibration measurement system is needed to analyze safety or operating conditions of rotating machineries. A vibration measurement system which has compactness and economic feasibility is developed in this research. Developed program is applied to measure the vibration signal in living space of ship and verified the usefulness of the vibration measurement system.