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컨테이너 크레인의 모델링 및 로버스트 제어에 관한 연구
양주호(J. H. Yang),김영완(Y. W. Kim),최교호(G. G. Choi),정황훈(H. H. Jeong) 한국동력기계공학회 2004 한국동력기계공학회 학술대회 논문집 Vol.- No.-
This paper introduce the anti-sway control for container crane. We have separated the system two parts and modeled mathematically for container crane. One is the container part having swing motion and the other is the actuator part with a auxiliary mass. The actuator part is installed on the spreader and have a small auxiliary mass which reduce swing motion in the desired manner. In this paper, the H∞ control theory was used in this control system to get robust controller. It's shown that the desirable performances is confirmed through the mathematical simulation. That is the robustness of this control system which use H∞ control theory is confirmed for the ability of disturbance rejection and modeling error.
트랜스퍼 크레인의 이송위치제어를 위한 서보계 설계 : 가중 H<sub>∞</sub> 오차사양을 만족하는 동일차원 관측기 설계
김영복(Y. B. Kim),정황훈(H. H. Jeong),양주호(J. H. Yang),문덕홍(D. H. Moon),황이철(I. C. Hwang) 한국동력기계공학회 2008 한국동력기계공학회 학술대회 논문집 Vol.2008 No.11
The most important job in the container terminal area is to handle the cargo effectively in the limited time. To achieve this object, many strategies have been introduced and applied to. If we consider the automated container terminal, it is necessary that the cargo handling equipments are equipped with more intelligent control systems. From the middle of the 1990's, an automated rail-mounted gantry crane(RMGC) and rubber-tired gantry crane(RTG) have been developed and widely used to handle containers in the yards. Recently, in these cranes, the many equipments like CCD cameras and sensors are mounted to cope with the automated terminal environment. In this paper, we try to support the development of more intelligent automated cranes which make the cargo handling be performed effectively in the yards. For this plant, the modelling, tracking control, anti-sway system design, skew motion suppressing and complicated motion control and suppressing problems must be considered. Especially, in this paper, the system modelling and tracking control approach are discussed. And, we design the tracking control system incorporating an observer based on the 2DOF servosystem design approach to obtain the desired state informations. In the case of observer design, a weighted error bound approach for a state estimator is considered. Based on an algebraic Riccati equation(inequality) approach, a necessary and sufficient condition for the existence of a full-order estimator which satisfies the weighted H<sub>2</sub> error bound is introduced. Where, the condition for existence of the estimator is denoted by a Linear Matrix Inequality(LMI) which gives an optimized solution and observer gain. Based on this result, we apply it to the tracking control system design for the transfer crane.
수치적 최적화 기법을 이용한 내연기관의 강인한 토크 제어
김영복(Y. B. Kim),양주호(J. H. Yang) 한국자동차공학회 1997 한국 자동차공학회논문집 Vol.5 No.4
Parameters in the internal combustion engines are variable depending on the operating points. Therefore, it is necessary to compensate for the uncertainties. From this point of view, this paper gives a controller design method and a robust stability condition by LMI approach for engine torque control which satisfies the given H∞ control performance in the presence of physical parameter perturbations. To the end, the robustness of the system in the presence of perturbation is guaranteed in the all engine operating regions. Its effectiveness is demonstrated by simulation.<br/>
양주호(J. H. Yang),정황훈(H. H. Jeong),김영완(Y. W. Kim),최교호(G. H. Choi) 한국동력기계공학회 2005 한국동력기계공학회 학술대회 논문집 Vol.- No.-
The magnetic bearing system is the plant that studied a lot because it hasn't only disadvantage like nonlinearity, unstability, high price but also has advantage like low fiction, low noise, low heat generating as one of discontacted mechanical elements. This MBS is controlled by PID, H infinite, Sliding mode and so on. These control method has disadvantage that need system parameter cleary or can't have high quality response easily. In this study concern about F-NFS(Fuzzy inference based Neuro-Fuzzy System) that have robust with high quality response as PID.
Hybrid F-NFC에 의한 저속 디젤 기관의 속도 제어
양주호(J. H. Yang),최교호(G. H. Choi),정황훈(H. H. Jeong),정해종(H. J. Jeong) 한국동력기계공학회 2004 한국동력기계공학회 학술대회 논문집 Vol.- No.-
In recent, the marine engine of a large size is being realized a lower speed, longer stroke and a small number of cylinders for the energy saving. Consequently the variation of rotational torque became larger than former days because of the longer delay-time in fuel oil injection process and an increased output per cylinder. It was necessary that algorithms have enough robustness to suppress the variation of the delay-time and the parameter perturbation. This paper shows the structure of hybrid F-NFC against the delay-time and the perturbation of engine parameter as modeling uncertainties, and the design of the robust speed controller by hybrid F-NFC for the engine. And, The Parameter values of linear equation are determined by RC-GA for F-NFS. The hybrid F-NFC is combined the F-NFC and PID controller for filling up each.