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김영완(Y. W. Kim),양주호(J. H. Yang),문덕홍(D. H. Moon),김영복(Y. B. Kim) 한국동력기계공학회 2004 한국동력기계공학회 학술대회 논문집 Vol.- No.-
In this paper, we suggest a new type of swing motion control system for the crane in which a small auxiliary mass is installed on the spreader. The swing motion is controlled by moving the auxiliary mass. The actuator reaction against the auxiliary mass applies inertial control forces to the container to reduce the swing motion in the desired manner. In this paper, as the basic and first step, we apply the LQ based control technique to the anti-swing motion control system design problem. And we consider the variation of the length between spreader and trolley by the simple switching strategy. So, in this study, we investigate usefulness of the proposed anti-sway system and evaluate system performance from simulations.
로프 길이변화를 고려한 크레인의 흔들림 제어에 관한 연구:Gain-Scheduling 기법에 의한 제어기 설계
김영완(Y. W. Kim),김영복(Y. B. Kim) 대한기계학회 2004 대한기계학회 춘추학술대회 Vol.2004 No.11
The sway motion control problem of a container hanging on the trolly is considered in the paper. In the container crane control problem, suppressing the residual swing motion of the container at the end of acceleration, deceleration or the case of that the unexpected disturbance input exists is main issue. For this problem, in general, many trolley motion control strategies are introduced and applied. In this paper, we introduce and synthesize a swing motion control system in which a sm all auxiliary mass is installed on the spreader made by ourselves. In this control system, the actuator reacting against the auxiliary mass applies inertial control forces to the container to reduce the swing motion in the desired manner. Especially we apply the H∞ based gain-scheduling control technique the anti-sway control system design problem of the controlled plant In this control system, the controller dynamics are adjusted in real-tim e according to time-varying plant parameters. And the experiment result shows that the proposed control strategy is shown to be useful to the case of time-varying system and, robust to disturbances like winds and initial sw ay motion.
[論文] 주퇴충격하중을 받는 궤도차량 구조물의 천이응력해석<br/> [論文] 주퇴층격하중을 받는 궤도차량 구조물의 천이응력해석
이영신(Y. S. Lee),김용환(Y. H. Kim),이기두(K. D. Lee),김영완(Y. W. Kim),안충호(C. H. Ahn),김동수(D. S. Kim),성낙훈(N. H. Sung) 한국자동차공학회 1993 오토저널 Vol.15 No.3
In this study, the transient impact structural stress analysis of tracked vehicle structures under recoil impact load is investigated. ANSYS, ABAQUS Code are used for modelling and analytical procedures. The highest maximum Tresca stress occurs on race ring portion and its stress level is (σ_T)_max=20~40kgf/㎟. The second highest stress occurs on upper plate of chassis and down plate of turret. The maximum stress level increases with loading direction and elevation angle. The results from linear static load analysis are very much different with impact analysis. Therefore, the practical solutions of structures under impact load can be obtained by only nonlinear transient impact analysis. The impact stress analysis of the steel vehicle structures is conducted. The maximum stress level is less than (σ_T)_max=20~40kgf/㎟. So, the design concept of steel structures can be adapted for new alternatives.