... ABSTRACT During the deployment of open-frame remotely operated underwater vehicles (ROVs), the influence of waves can produce large-scale movement in the ROVs that may break or damage the umbilical cable. This paper investigates the forced water entry and lifting water entry of ROVs using...

... rov electrical industrial apparatus upstream oil & gas modeling & simulation machine learning europe government sub-sea system optimization problem artificial intelligence remotely operated vehicle prediction model control method external disturbance controller trajectory...

... ABSTRACT Work-class ROVs are always subject to external disturbances and system uncertainties. The sliding mode control is an effective method to overcome the disturbances, but its chattering phenomenon restricts its practical application on ROVs. In this paper, we propose a model-free...

... and the suction pile. subsea system submerged weight tolerance transponder bucket project management suction pile sinking kar-lu teh rov subsea manifold upstream oil & gas assessment impact assessment target penetration depth seal failure probability installation strategic planning...

..., a small remotely operated vehicle (ROV) has been developed to remove sea urchins. We study the ROV system and the status of sea urchin removal. The experimental area is Nojima island Shizugawa Bay, in Miyagi Prefecture (Tahara, 2019). ROV SYSTEM FOR SEA URCHIN COLLECTION The Vega is a medium-sized ROV...

... ABSTRACT This paper presents the dynamic modelling of a rigid-flexible tether management system (TMS) of ROV (Remotely-operated Underwater Vehicle) during the ROV launching and recovery processes. In the present study, modelling of TMS includes rigid-flexible multibody dynamics of a ROV...

... of being in that place. And it becomes possible to obtain a lot of information that could not be obtained until now. In this paper, we describe the outline of the U8K-SH V camera and the evaluation test carried out in underwater mounted on the Remotely Operated Vehicle (ROV) "KAIKO" owned by the Japan...

... ABSTRACT The purpose of this study is to investigate the coupling dynamic behavior of Remotely Operated Underwater Vehicle (ROV)-tether system for establishing the most accurate motion simulator. This paper is presented in two aspects: to examine the performance of numerical tether model...

... ABSTRACT To ensure that ROVs can complete depth tracking in the presence of external disturbances and system uncertainties, this paper proposes a double-loop sliding mode controller with a disturbance observer. The double loop strategy which concludes an inner-loop control system and an outer...

... (Hereafter called ROV) are amply practical for the desired use. Its features are high mobility design,which is small scale, light weight, which is portable, the underwater observation system, which is compact size underwater camera, LED light, wired transfer unit and base station monitor, and the remote...

... ABSTRACT In this research, a low cost concept of environment monitoring system for coastal area is examined. The system consists of a small ROV, a multi-copter and a floating LBL system. A supposed typical monitoring situation is coral reef monitoring. We fabricated each subsystem and tested...

... ABSTRACT We have been developing an accurate numerical motion simulator for remotely operated vehicles (ROVs) with tether cable. This simulator is constructed using computational fluid dynamics (CFD) based motion simulation for the ROV and absolute nodal coordinate formulation (ANCF...

... ABSTRACT This article presents the design and manufacturing approach behind the thruster system developed for use in the ROV (Remotely Operated Vehicle) competition of a student team from University of Stavanger (UiS) called UiS Subsea. Starting from 2014, this team participated...

... of the environment and the global amount of resources. In many applications, remotely operated vehicles (ROV) are preferred with respect to autonomous vehicles, since their use guarantees teleoperation on the mission scenario. This kind of vehicles help scientists to survey submerged sites at great depths...

... ABSTRACT Recently, AUVs and ROVs have been developed and operated for ocean-resource development and the like. ROVs are operated to obtain resource or organism samples using a manipulator. Operators of such vehicles require advanced operating techniques, as well as an accurate motion...

... Abstract This paper focuses on design and experiment of an abdominal operation ROV. Firstly, overall design for system of abdominal operation ROV which consists of surface unit, power module, umbilical cable and ROV body is introduced. Secondly, the design of ROV body is described in detail...

... Abstract This paper describes the structure of an innovative robotic platform that integrates a small work-class ROV, a micro-ROV and a dexterous manipulator. The main feature of the robotic structure is to facilitate underwater tele-manipulation by assisting the operator in piloting...

... Abstract This paper describes the experimental development of a thruster dynamics model for a thruster from the Saab Seaeye Falcon Remotely Operated Vehicle (ROV) – a small observation class ROV. The thruster dynamics model used in this work is built from a previously published semi-empirical...

... Abstract This paper describes a small observation class remotely operated underwater vehicle (ROV) outfitted with a low-level controller, which provides it with semi-autonomous capabilities. A stock Saab SeaEye Falcon ROV was augmented with a suite of navigation sensors as well as guidance...

... connection operations is one of the main issues in offshore operations. Underwater connections can be conducted with wet- or drymateable connectors, performed by divers or ROVs. Although there are existing solutions used by the oil and gas industry that could be employed, the capital expenditure needed...