Blar i Institutt for marin teknikk på tidsskrift "IEEE Access"
Viser treff 1-15 av 15
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A Multibeam-Based SLAM Algorithm for Iceberg Mapping Using AUVs
(Journal article; Peer reviewed, 2018)Using autonomous underwater vehicles (AUVs) for mapping underwater topography of sea-ice and icebergs, or detecting keels of ice ridges, is foreseen as enabling technology in future Arctic marine operations. Wind, current, ... -
Camera-Sonar Combination for Improved Underwater Localization and Mapping
(Journal article; Peer reviewed, 2023)Taking advantage of the complimentary properties of sonars and cameras can improve underwater visual odometry and point cloud generation. However, this task remains difficult as the image generation concepts are different, ... -
Comparing Combinations of Linear and Nonlinear Feedback Terms for Ship Motion Control
(Peer reviewed; Journal article, 2020)In this article, combinations of linear and nonlinear feedback terms are investigated for 3 degrees-of-freedom pose and velocity control of ships. Nonlinear control algorithms that are found in the literature often have ... -
Disturbance rejection by acceleration feedforward for marine surface vessels
(Journal article; Peer reviewed, 2016)Acceleration signals have a powerful disturbance rejection potential in rigid body motion control, as they carry a measure proportional to the resulting force. Yet, they are seldom used, since measuring, decoupling, and ... -
Efficiency Estimation of Synchronous Generators for Marine Applications and Verification With Shop Trial Data and Real Ship Operation Data
(Journal article; Peer reviewed, 2020)Three methods were explored to estimate the efficiency for the conversion of mechanical power to electrical power using synchronous generators in ships at low power factors. Generally, the generator efficiency data is ... -
Finite-time Backstepping of a Nonlinear System in Strict-feedback Form: Proved by Bernoulli Inequality
(Peer reviewed; Journal article, 2020)In this paper, we propose a novel state-feedback backstepping control design approach fora single-input single-output (SISO) nonlinear system in strict-feedback form. Rational-exponent Lyapunovfunctions (ReLFs) are employed ... -
Force Tracking Using Actuated Winches with Position-Controlled Motors for Use in Hydrodynamical Model Testing
(Peer reviewed; Journal article, 2021)In this paper, we consider the problem of accurate force control using actuated winches, intended for use in real-time hybrid hydrodynamic model testing. The paper is also relevant to other cable-driven parallel robot ... -
Four Degree-of-Freedom Hydrodynamic Maneuvering Model of a Small Azipod-Actuated Ship With Application to Onboard Decision Support Systems
(Peer reviewed; Journal article, 2023)The main contribution of this paper is a numerical ship motion model of NTNU’s research vessel Gunnerus, capturing the surge, sway, roll, and yaw dynamics when sailing in uniform and steady currents. The model utilizes a ... -
Hybrid modeling of strategic loading of a marine hybrid power plant with experimental validation
(Journal article; Peer reviewed, 2016)Recent developments in marine power systems, energy storage devices (ESDs) technology, and modification to rules and regulations increase the opportunities to improve efficiency and reduce emissions. One particular application ... -
Marine Vessel and Power Plant System Simulator
(Journal article; Peer reviewed, 2015)Modern marine electric propulsion vessels have many systems. These interactions and integration aspects are essential when studying a system and subsystem behavior. This is especially important when considering fault ... -
Model Predictive Control of Marine Power Plants with Gas Engines and Battery
(Journal article; Peer reviewed, 2019)The electric load demand on marine vessels is constantly changing during some operational modes, such as in harsh weather or complex operations. Therefore, diesel engines are typically used to handle these variations. Gas ... -
On the Joint Distribution of Excursion Duration and Amplitude of a Narrow-Band Gaussian Process
(Journal article; Peer reviewed, 2018)The probability density of crest amplitude and duration that exceeds a given level is used in many theoretical and practical problems in engineering that are subjected to fluctuating loads such as wind and wave loads. The ... -
Time-Varying Model-Based Observer for Marine Surface Vessels in Dynamic Positioning
(Journal article; Peer reviewed, 2017)This paper deals with the problem of transient events in model-based observers for dynamic positioning of marine surface vessels. Traditionally, model-based observers experience a deterioration of performance during ... -
Trajectory Planning for Navigation Aiding of Autonomous Underwater Vehicles
(Peer reviewed; Journal article, 2020)Autonomous underwater vehicles can perform seabed surveys with a higher resolution and quality than from equivalent ship-mounted sensors. Although high-grade inertial navigation systems aided by Doppler velocity logs can ... -
Validation of Data-Driven Labeling Approaches Using a Novel Deep Network Structure for Remaining Useful Life Predictions
(Journal article; Peer reviewed, 2019)Today, most research studies that aim to predict the remaining useful life (RUL) of industrial components based on deep learning techniques are using piecewise linear (PwL) run-to-failure targets to model the degradation ...