Browsing NTNU Open by Author "Hassani, Vahid"
Now showing items 21-39 of 39
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Icing diagnosis in unmanned aerial vehicles using an LPV multiple model estimator
Rotondo, Damiano; Cristofaro, Andrea; Hassani, Vahid; Johansen, Tor Arne (Journal article; Peer reviewed, 2017)The phenomenon of icing, i.e. ice accretion on aircraft surfaces, affects the flight performance of unmanned aerial vehicles (UAVs). Autonomous icing detection schemes are needed in order to assure high efficiency and limit ... -
Image Processing and Target Tracking Technology in the Sea Cucumber Fishing Application
Wu, Baiheng (Master thesis, 2019)With the development of people’s living standard, the consumption of the precious marine products is getting higher, and a class of the sea cucumber which grows in the northeast sea area in China is among them. However, ... -
Modeling and control of a SES in various operational modes
Chen, Kai Jia Jin (Master thesis, 2018)Accessibility and comfort of often go in compromise of cost efficiency of the vehicle for offshore commutation. The Surface effect ship (SES) is one of the most cost-efficient and comfortable vehicles currently available ... -
Modelling and Control of a Two-Body Offshore Wave Energy Converter - Evaluation of Passive Control Strategies
Schultz, Eirik (Master thesis, 2015)The main motivation behind this thesis is using the renewable resource of wave energy to solve two of the most important challenges for sustainability; energy and freshwater. The DynOcean is a two-body offshore wave energy ... -
Nonlinear Modeling, Controller and Observer Design for Roll Damping on a Surface Effect Ship with Split Air Cushion
Tønnessen, Jonas; Engebretsen Bryn, Håkon (Master thesis, 2017)For the first time, a controller is presented for roll motion damping, exclusively by the use of air cushion pressure, on a surface effect ship (SES) with a longitudinally split air cushion. The Wave Craft, manufactured ... -
Parameters Estimation of Nonlinear Manoeuvring Model for Marine Surface Ship Based on PMM Tests
Xu, Haitong; Hassani, Vahid; Soares, C. Guedes (Chapter, 2018)A nonlinear manoeuvring mathematical model of marine surface ship model is briefly introduced. In order to obtain the hydrodynamic coefficients, system identification is used to estimate the parameters using Planar Motion ... -
Path planning for marine vehicles using Bezier curves
Hassani, Vahid; Lande, Simen V. (Journal article; Peer reviewed, 2018)Over the past few years maritime sector has witnessed an increasing interest in use of autonomous ships and in particular Autonomous Surface Vehicles (ASV) in complex applications with high associated risks. There is an ... -
Path Planning for Marine Vehicles using Bézier curves
Lande, Simen Vike (Master thesis, 2018)The maritime sector have over the last few years witnessed a growing demand for the development of Autonomous Surface Vehicles (ASV), capable of performing complex tasks with high associated risk. Central in this development ... -
Real-Time Parameter Estimation of a Nonlinear Vessel Steering Model Using a Support Vector Machine
Xu, Haitong; Hinostroza, M. A.; Hassani, Vahid; Guedes Soares, C (Journal article; Peer reviewed, 2019)The least-square support vector machine (LS-SVM) is used to estimate the dynamic parameters of a nonlinear marine vessel steering model in real-time. First, maneuvering tests are carried out based on a scaled free-running ... -
Real-Time Parameter Estimation of Nonlinear Vessel Steering Model Using Support Vector Machine
Xu, Haitong; Hassani, Vahid; Hinostroza, Miguel; Soares, C. Guedes (Chapter, 2018)The Least-square support vector machine (LS-SVM) is used to estimate the dynamic parameters of a nonlinear marine vessel steering model in real-time. First, manoeuvring tests are carried out based on a scaled free-running ... -
Robust Dynamic Positioning of offshore vessels using mixed-μ synthesis modeling, design, and practice
Hassani, Vahid; Sørensen, Asgeir Johan; Pascoal, A.M.; Athans, Michael (Journal article, 2017)This paper describes a procedure to design robust controllers for Dynamic Positioning (DP) of ships and offshore rigs subjected to the influence of sea waves, currents, and wind loads using H∞ and mixed-μ techniques. The ... -
Roll damping of a surface effect ship with split air cushion
Tønnesen, Jonas; Bryn, Håkon; Gravdahl, Jan Tommy; Hassani, Vahid; Auestad, Øyvind Fidje (Journal article; Peer reviewed, 2018)This paper considers linear modeling of a surface effect ship (SES) where roll motions are damped by exclusively exploiting a longitudinally split air cushion design. On a SES, the pressurized air cushions can support up ... -
Supervisory Control of Line Breakage for Thruster-Assisted Position Mooring System
Ren, Zhengru; Skjetne, Roger; Hassani, Vahid (Chapter, 2015)Thruster-assisted position mooring (TAPM) is an energy-efficient and reliable stationkeeping method for deep water structures. Mooring line breakage can significantly influence the control system, and ultimately reduce ... -
Surface Effect Ship with Four Air Cushions Part II: Roll and Pitch Damping
Haukeland, Ola Mosebø; Hassani, Vahid; Auestad, Øyvind Fidje (Peer reviewed; Journal article, 2019)This paper introduce damping of roll and pitch motion on a Surface Effect Ship (SES) in low vessel speeds. The SES consist of two side-hulls, a reinforced rubber bow and stern seal skirt system and four air cushion. The ... -
Sway Control on a Surface Effect Ship - using asymmetric vent valve opening
Bua, Nils Haktor; Vamråk, Vegard Moesødegård (Master thesis, 2016)The lateral maneuvering for Surface Effect Ships (SESs) in low velocities is highly limited. Due to SESs hull shape in the bow, it is not an option to use conventional means to get lateral thrust, such as tunnel- or ... -
Truncated least square support vector machine for parameter estimation of a nonlinear manoeuvring model based on PMM tests
Xu, Haitong; Hassani, Vahid; Guedes-Soares, C. (Journal article; Peer reviewed, 2020)A new version of least square support vector machine (LS-SVM), the truncated LS-SVM, is proposed to estimate the nondimensionalized hydrodynamic coefficients. Truncated LS-SVM is shown to be an efficient and robust method ... -
Uncertainty analysis of the hydrodynamic coefficients estimation of a nonlinear manoeuvring model based on planar motion mechanism tests
Xu, Haitong; Hassani, Vahid; Guedes Soares, Carlos (Journal article; Peer reviewed, 2019)Uncertainty analysis of the identified hydrodynamic coefficients of a nonlinear manoeuvring model is presented in this paper. The classical parameter estimation method, Least Square, is briefly introduced, and the uncertainty ... -
Vent Valve Thrust Force for Surface Effect Ships
Teigland, Håkon; Hassani, Vahid; Auestad, Øyvind Fidje (Journal article; Peer reviewed, 2019)The Surface Effect Ship (SES) holds promise as a viable and appealing alternative for transferring crew to offshore wind farms and oil platforms due to its superior seakeeping capability, high comfort and speed. A SES is ... -
Vibration-based Fault Detection and Condition Monitoring of Mechanical Systems in Wind Turbines
Rasmussen, Morten Aleksander (Master thesis, 2018)An increased energy demand of the future, combined with problems related to climate change and emissions of greenhouse gases, has made solutions for reliable and efficient renewable energy producers attractive. Wind turbines ...