Skip to content
Extra Form
Abstract The block erection using a gantry crane is an important process for the production of the ships in a shipyard. The motion of the block should be controlled accurately under the external forces to prevent collision with the structures and the excessive loads on wire ropes. However, it is difficult to control the block during the lifting because the movement of the block is indirectly controlled with various objects such as trolleys, hooks, equalizers, and wire ropes. Therefore, we proposed the Deep Reinforcement Learning (DRL)-based block lifting method in this study. The DRL-based block lifting method can control the block under the change of the center of gravity and modelling uncertainty. Furthermore, the DRL-based block lifting method can provide robust control with an unexpected motion of the block due to the unexpected external disturbance. The position, orientation and angular velocity of the block and hoisting speed of wire ropes were set as the input state of the neural network of DRL. The hosting speed of wire ropes was controlled as the output action of DRL. The functions to minimize the change of orientation and to stabilize the speed of the block were set as the reward of DRL. In this study, the deep deterministic policy gradient (DDPG) method of DRL, which is a kind of off-policy actor-critic method, was applied to solve the problem with continuous state space and continuous multi-action space. To verify the DRL-based block lifting method proposed in this study, it was compared with traditional control algorithms for various simulation examples. As a result, the proposed method could effectively control the block with the modelling uncertainty. Also, the proposed method could respond to the unexpected motion of the block effectively due to the unexpected external disturbance.
Publication Date 2022-04-28

Do-Hyun Chun, Myung-Il Roh, Hye-Won Lee, Seung-Ho Ham, "A Block Lifting Method with Wire Ropes Based on Deep Reinforcement Learning", Proceedings of ICDM(International Conference on Decarbonization and Digitalization in Marine Engineering) 2022, Si-Heung, Korea, 2022.04.28-29


List of Articles
번호 분류 제목 Publication Date
66 International Conference Bo-Hyun Lee, Kyoung-Sik Chang, Bum-Sang Yoon, Joo-Sung Lee, Myung-Il Roh, "Large Eddy Simulation of Fully Turbulent Channel Flow Using Variational Multiscale Method", Proceedings of the 23rd Asian-Pacific TEAM(Technical Exchange and Advisory Meeting on Marine Structures) 2009, Kaohsiung, Taiwan, pp. 93-97, 2009.11.30-12.03 file 2009-11-30
65 International Conference Yoon-Nam An, Joo-Sung Lee, Myung-Il Roh, Bum-Sang Yoon, Kyoung-Sik Chang, "Parametric Study of Isogeometric Analysis Using NURBS", Proceedings of the 23rd Asian-Pacific TEAM(Technical Exchange and Advisory Meeting on Marine Structures) 2009, Kaohsiung, Taiwan, pp. 169-173, 2009.11.30-12.03 file 2009-11-30
64 Domestic Conference 장경식, 이보현, 윤범상, 이주성, 노명일, "변분 다중 스케일법을 이용한 Ret = 180 채널 난류 유동의 대와류 모사", 2009년도 한국전산유체공학회 추계학술발표회, 대전, pp. 56-59, 2009.11.27-28 file 2009-11-27
63 Domestic Conference 임병석, 김주영, 노명일, 이주성, 윤범상, "블록의 출고 시간과 우선 순위를 고려한 블록 적치장의 최적 배치", 2009년도 대한조선학회 추계학술발표회, 문경, pp. 587-589, 2009.10.29-30 file 2009-10-29
62 Domestic Conference 김주영, 임병석, 노명일, 이주성, 윤범상, 권영근, "해상 상태를 고려한 선박 경제 운항 경로 결정에 관한 연구", 2009년도 대한조선학회 추계학술발표회, 문경, pp. 535-542, 2009.10.29-30 file 2009-10-29
61 Domestic Conference 이보현, 장경식, 윤범상, 노명일, 안윤남, 이주성, "변분 멀티 스케일법을 이용한 채널 난류 유동의 대와류 모사", 2009년도 한국해양공학회 추계학술발표회, 거제, pp. 381-384, 2009.10.22-23 file 2009-10-22
60 Domestic Conference 안윤남, 이주성, 노명일, 윤범상, 장경식, "등기하 해석법을 이용한 구조해석에 관한 연구", 2009년도 한국해양공학회 추계학술발표회, 거제, pp. 238-241, 2009.10.22-23 file 2009-10-22
59 International Conference Ju-Hwan Cha, Seung-Ho Ham, Kyu-Yeul Lee, Myung-Il Roh, Kwang-Pil Park, Heung-Won Suh, "Discrete Event/Discrete Time Simulation of Block Erection by a Floating Crane based on Multibody System Dynamics", Proceedings of ISOPE 2009, Osaka, Japan file 2009-06-21
58 International Conference Ji-Hyun Hwang, Ju-Hwan Cha, Seung-Ho Ham, Bo-Ram Kim, Myung-Il Roh, Kyu-Yeul Lee, "Establishment of Offshore Process FEED Method for Oil-Based FPSO Topsides Systems", Proceedings of ISOPE 2009, Osaka, Japan, pp. 144-150, 2009.06.21-26 file 2009-06-21
57 International Conference Ji-Hyun Hwang, Young-Joo Ahn, Joon-Ho Min, Gwang-No Lee, Ho-Jin Jeong, Mung-Yu Kim, Hee-Chang Kim, Myung-Il Roh, Kyu-Yeul Lee, "Application of an Integrated Basic Process Engineering Solution to Generic LNG FPSO Topsides", Proceedings of ISOPE 2009 file 2009-06-21
Board Pagination Prev 1 ... 40 41 42 43 44 45 46 47 48 49 ... 51 Next
/ 51

Powered by Xpress Engine / Designed by Sketchbook

sketchbook5, 스케치북5

sketchbook5, 스케치북5

나눔글꼴 설치 안내


이 PC에는 나눔글꼴이 설치되어 있지 않습니다.

이 사이트를 나눔글꼴로 보기 위해서는
나눔글꼴을 설치해야 합니다.

설치 취소