Abstract The present study describes the development of control hardware and software for a mobile welding robot. This robot is able to move perform tasks in double hull structure. consists main controller machine controller. Control four layers. Each layer modules. Suitable combinations modules enable required tasks. developed using C programming under QNX operating system. For modularizing architecture software, we designed with layers: Task Manager, Planner, Actions Task, Executer....

Abstract Offshore operation causes the dynamic motion of offshore cranes and payload by ocean environment. The lowers safety efficiency work, which may increase working time or cause accidents. Therefore, we design a control method for crane using artificial intelligence to minimize heave payload. Herein, reinforcement learning (RL), calculates actions according states, is applied. Furthermore, deep deterministic policy gradient (DDPG) algorithm used because need be determined in continuous...

The weight information of an FPSO (floating production, storage, and offloading) plant is one the important data needed to estimate amount production material (e.g., plates) determine suitable method for its construction. In addition, a key factor that affects building cost period plant. Although importance has long been recognised, weight, especially topside, roughly estimated using existing similar as well designer's experience. To improve this task, estimation model topsides was developed...

To implement a combined discrete event and time simulation such as submarine diving in distributed environment, e.g., the High Level Architecture (HLA)/Run-Time Infrastructure (RTI), HLA interface, which can easily connect models with HLA/RTI, was developed this study. verify function performance of it applied to dive scenario shows same results stand-alone simulation. Finally, by adding visualization model editing model, we confirm that interface provide user-friendly functions new model.

This paper presents a simulation for passenger ship evacuation considering the inclination of ship. In order to describe passenger's behavior in an situation, is modeled as rigid body which translates horizontal plane and rotates along vertical axis. The position rotation angle are calculated by solving dynamic equations motions at each time step. To calculate inclined damaged ship, static equilibrium derived using "added weight method". Using these equations, physical external forces due...

The weight information of an FPSO plant, especially the (floating, production, storage, and off-loading), is one important data needed to estimate amount production material (e.g. plates) determine suitable method for its construction. In addition, a key factor that affects building cost period plant. Although importance has long been recognised, weight, topside, roughly estimated using existing design as well designer's experience. To improve this task, nonlinear simplified model estimation...

To support the procedure for determining an optimal liquefaction cycle FLNG FEED, ontological modeling method which can automatically generate various alternative cycles were carried out in this paper. General rules combining equipment are extracted from existing onshore like C3MR and DMR cycle. A generic relational model represents whole relations of plant elements has all these rules, it is expressed by using system entity structure (SES), framework that hierarchically a their...

This paper suggests an event-based scenario manager capable of creating and editing a for shipbuilding process simulation based on multibody dynamics. To configure various situation in shipyards easily connect with dynamics, the proposed method has two main concepts: Actor Action List. The represents anatomic unit action dynamics can be connected to specific component kernel such as body joint. user make up by combining actors. List contains information arranging executing Since is kind...

본 논문에서는 전장 환경 요소 및 플랫폼 모델 간 상호 교환 정보를 통합하여 관리하는 전투 공간 모델(Battle Space Model)을 제안한다. 모델은 전장의 지형 정보와 요소를 저장하는 Geographic Information System(GIS) Model, 정보에 요소의 영향을 고려하는 Propagator Logger 그리고 간의 작용(encounter) 시점을 예측하고 작용 시점까지 시간을 건너뛰는 Spatial Encounter Predictor(SEP) Model로 구성된다. 또한 이산 사건 시간 혼합형 시뮬레이션 구조로 구성되어 있는 모델과 추가 작업 없이 직접 연결하기 위해, 구성하였다. 연구에서는 모델을 적용하여 수중운동체 교전 시뮬레이션을 수행하였다. 이를 통해 각자가 반영하던 모델이 일괄적으로 반영함으로써 개발을 단순화 할 수 있었다. 각 다른 모델과의 정보 교환을 고려하지 않고 교환만을 고려하면 되므로, 중립적으로 구성할 This paper...

In the initial design stage, technology for estimating and managing weight of a floating offshore structure, such as FPSO (Floating, Production, Storage, Off-loading unit) an wind turbine, has close relationship with basic performance price structure. this study, using genetic programming (GP), being used lot in approximate model etc., estimation structure was studied. For purpose, various data were collected through literature survey, then method developing studied implemented. Finally, to...