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논문 기본 정보

자료유형
학술대회자료
저자정보
Van Phuoc Bui (Pukyong National University) Jeong Soon Jeong (Pukyong National University) Dong Seok Lee (Pukyong National University) Young Bok Kim (Pukyong National University) Kwon Soon Lee (Dong-A University)
저널정보
제어로봇시스템학회 제어로봇시스템학회 국제학술대회 논문집 ICCAS 2010
발행연도
2010.10
수록면
195 - 200 (6page)

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초록· 키워드

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In the harbor area, precise steering is the most important operation. This operation requires a set of adequate thrust devices with exactly taken into account surge, sway and yaw motions. However, at low speed maneuvering, the effectiveness of actuators is nominal, thus using assistance of tugboat is necessary to ensure safe berthing operation. In this paper, the mathematical model of system that describes the interaction between unactuated ship and tugboats is presented. Thrust allocation is solved by using the redistributed pseudo inverse (RPI) approach to determine the thrust and direction of each individual tugboat. The main goal of this approach is to minimize the power supplied to tugboats and increase their controllability under constraints that the tugboat can only exert a limited pushing force and can only change direction slowly. Additionally, the adaptive control law is proposed to capture the draft coefficients of ship which are known as uncertainty parameters. The controller guarantees the ship follows the path (geometric task) with desired velocities (dynamic task). Particulars of Cybership I which is a model ship are used to evaluate the efficiency of proposed method through Matlab simulation.

목차

Abstract
1. Introduction
2. System Model
3. Adaptive Control Design
4. Formulation of Control Allocation
5. Simulation Results
6. Conclusion
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