Autonomous underwater vehicles-challenging developments and technological maturity towards strategic swarm robotics systems

N Vedachalam, R Ramesh, VBN Jyothi… - Marine Georesources …, 2019 - Taylor & Francis
Reliable power supply, precise position determination and effective communication are the
key requirements for strategic autonomous underwater vehicles (AUV) involved in long …

Hierarchical NMPC–ISMC of active heave motion compensation system for TMS–ROV recovery

H Zhou, J Cao, B Yao, L Lian - Ocean engineering, 2021 - Elsevier
This study reveals the operating risk of cable breaking when the TMS–ROV recovery is
carried out beneath rough ocean waves. To release the negative impact of the support …

A Bayesian approach to risk modeling of autonomous subsea intervention operations

J Hegde, IB Utne, I Schjølberg, B Thorkildsen - Reliability Engineering & …, 2018 - Elsevier
The introduction of autonomy in subsea operations may affect operational risk related to
Inspection, Maintenance, and Repair (IMR). This article proposes a Bayesian Belief Network …

A method for evaluating safety reliability of descend/ascend drop-weight system and mission abort decision for deep-ocean scientific human submersibles

M Palaniappan, V Bala Naga Jyothi, T Chowdhury… - Scientific Reports, 2024 - nature.com
Descend and ascend of deep-water human-occupied submersibles based on buoyancy
changes are enabled using a denomination of dispensable drop-weights, and loss of …

Reliability assessment of multi-megawatt capacity offshore dynamic positioning systems

N Vedachalam, GA Ramadass - Applied Ocean Research, 2017 - Elsevier
Abstract A reliable Dynamic Positioning (DP) system is the key requirement for critical
offshore activities. This paper presents the quantitative reliability assessment for offshore …

Review of maturing multi-megawatt power electronic converter technologies and reliability modeling in the light of subsea applications

N Vedachalam, SM Babu, GA Ramadass… - Applied Ocean …, 2014 - Elsevier
The increasing demand for establishing deep water enhanced oil recovery systems for
subsea boosting, power generation, transmission from remote subsea marine current …

Review of technological advancements and HSE-based safety model for deep-water human occupied vehicles

N Vedachalam, GA Ramadass… - Marine Technology …, 2014 - ingentaconnect.com
This paper reviews the latest advancements in subsea technologies associated with the
safety of deep-water human occupied vehicles. Human occupied submersible operations …

Study of manipulator operations maneuvered by a ROV in virtual environments

J Zhang, W Li, J Yu, X Feng, Q Zhang, G Chen - Ocean engineering, 2017 - Elsevier
It is extremely difficult to operate an underwater manipulator carried on a remotely operated
vehicle (ROV) in the deep sea. In order to investigate underwater manipulator operations …

Reliability centered modeling for development of deep water Human Occupied Vehicles

N Vedachalam, GA Ramadass, MA Atmanand - Applied ocean research, 2014 - Elsevier
Abstract Human Occupied Vehicle operations are required for deep water activities such as
high resolution bathymetry, biological and geological surveys, search activities, salvage …

Reliability-based preventive maintenance strategy for subsea control system

Y Wen, Y Yue, X Zuo, X Li - Processes, 2024 - mdpi.com
The subsea control system, a pivotal element of the subsea production system, plays an
essential role in collecting production data and real-time operational monitoring, crucial for …