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프로펠러와 부가추력장치를 갖는 특수선의 모델링 및 통합제어기 개발
김종화,임재권,이병결,Kim Jong Hwa,Lim Jae Kwon,Lee Byung Kyul 한국마린엔지니어링학회 2005 한국마린엔지니어링학회지 Vol.29 No.2
Dynamic Positioning(DP) system maintains ship's position (fixed location or predetermined track) exclusively by means of CPPs and thrusters. To generate the control input adequate to various situation an integrated controller for CPPs and thrusters is required. The integrated controller is composed of a thrust calculation algorithm and a thrust allocation algorithm. The thrust calculation algorithm generates thrusts in the surge direction and the sway direction from the desired forward and lateral speed and generates a moment about the yaw axis from desired heading angle. The thrust allocation algorithm allocates the generated thrusts and moment to each CPP and thruster. Computer simulations are executed to confirm the effectiveness of the suggested controller.
임종옥(Jong-Ok Lim),임재권(Jae-Kwon Lim),이병결(Byung-Kyul Lee),김종화(Jong-Hwa Kim) 한국마린엔지니어링학회 2003 한국마린엔지니어링학회 학술대회 논문집 Vol.2003 No.-
In order to detect position or velocity of hydraulic cylinder, magnetic resistance methods such as LVDT and hall sensor have been used. However, those methods have many problems under the poor environment. This paper suggests a position detecting method of hydraulic cylinder in offshore environment. Moreover, this paper presents not only a remote detecting method using two sets of optical sensors and optical fibers but explains a signal processing method for a fusion type amplifier.
리니어 리졸버방식을 사용한 유압실린더 스트로크 측정센서의 개발
김종화(Jong Hwa Kim),임재권(Jae Kwon Lim),김진규(Jin Gyu Kim),이성구(Seong Gu Lee),최병훈(Byung Hoon Choi),주하나(Ha Na Joo) 한국마린엔지니어링학회 2010 한국마린엔지니어링학회 학술대회 논문집 Vol.2010 No.10
This paper suggests a stroke measuring method based on linear resolver principle for hydraulic cylinders with long and ceramic coated piston rods. The effectiveness of the suggested method is discussed through real experiments using an implemented prototype embedded on a ceramic coated hydraulic cylinder.