Control of ship roll motion by active fins using fuzzy logic

Surendran, S.; Kiran, V.

doi:10.1533/saos.2006.0105

Cited by 11 publications

(3 citation statements)

References 14 publications

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“…predictive control [8], [9], sliding-mode control [10], [11], fuzzy control [12], [13], were proposed for fin stabilizer system. However, with the ship model parameters uncertainty problem, adaptive backstepping control is considered as good solution for active fin system.…”

Section: Introductionmentioning

confidence: 99%

Adaptive backstepping control for ship nonlinear active fin system based on disturbance observer and neural network

Duong

Duy

2022

IJECE

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<span>Adaptive backstepping control based on disturbance observer and neural network for ship nonlinear active fin system is proposed. One disturbance observer is given to observe the disturbances of the system, by this way, the response time is shorten and the negative impact of disturbance and uncertain elements of the system is reduced. In addition, radial basic function neural network (RBFNN) is proposed to approach the unknown elements in the ship nonlinear active fin system, therefor the system can obtain good roll reduction effectiveness and overcome the uncertainties of the model, the designed controller can maintain the ship roll angle at desired value. Finally, the simulation results are given for a supply vessel to verify the successfulness of the proposed controller.</span>

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Section: Introductionmentioning

confidence: 99%

Adaptive backstepping control for ship nonlinear active fin system based on disturbance observer and neural network

Duong

Duy

2022

IJECE

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“…Surendran et al (2006) studied the control of ship roll motion by active fins using fuzzy logic. The author activated the fin by electro-hydraulic mechanism based on the in-built intelligence using fuzzy logic control algorithm [16] . Giles et al (2009) described the avoidance of parametric roll in head sea.…”

Section: Introduction (Heading 1)mentioning

confidence: 99%

Fin Effect on Pitch Motion and the Avoidance of Initiation of Parametric Roll

Reguram¹,

Rajashivasankari²,

Vignesh³

et al. 2015

IJERT

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Container ships are prone to move at a greater speed compared to that of other merchant ships. The slenderness of the hull of container vessel is for better speed, but it leads to unfavorable motions especially while rolling. Such a slender hull when get twisted due to relative wave positions both port and starboard sides cause torsion and warping on the hull. The pitch and roll are related and sometimes the vessel might be forced to parametric roll condition which is very dangerous. A fin attached to the ship hull proves to be more efficient in controlling the ship motions particularly pitch. The fin is fitted at a lowest possible location of the hull surface and it is at the bow part of the ship. Computer simulation is done using proved software package ANSYS AQWA and the results are compared. Simulation is done for both regular and irregular sea and the effect of fin on ship motion is studied. The fin proves to be less effective at higher frequency range in controlling the ship motion. Although the ultimate aim in this paper is to avoid the situation leading to parametric roll, immediate attention is to modify pitch performance of the moving ship. Such situations of ship motion combined with the slender hull deformation cause the failure of lashing arrangements leading to cargo stack disorder and imbalance.

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“…Aprilia et al, 2018) said that Fin Stabilizer on a ship is used to dampen the rocking motion of the ship from the hull caused by waves, wind, and sea currents by generating a torque around the roll axis (shaking) which is proportional to the opposite direction of the wobble motion received by the hull. As said by(Patil et al, 2019) (Surendran & Kiran, 2007) The fin is driven by a control system and works with the principle of hydrodynamic lift to produce a moment to stabilize the ship's movements caused by the interaction between the waves and the ship. The attached fin stabilizer aims to provide comfort for passengers or ABK (Ship's crew) and the safety of the equipment in increasing the accuracy of weapons systems, for example on warships.Motion Sickness or seasickness on a ship is an inconvenience experienced by the body because there is no similarity in stimulation between the stimulus, eye and ear labyrinth received by the human brain.…”

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confidence: 99%

Numerical Analysis Seakeeping and Motion Sickness Incidence (Msi) on Hospital Ships by Adding Fins Stabilizer

Yasin¹,

Ariani²,

Ariesta

2022

JMEST

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The development in maritime technology to improve ship performance and operations are growing and diverse. One of the developments carried out is the addition of fin stabilizers to improve ship safety as support for comfort and ships. This research analyzes the effect of variations in the shape of the fin stabilizer on the seakeeping and Comfort Index for Hospital Ships using Maxsurf Modeler software. The parameters used in this research are fins stabilizer Gemini 30, Gemini 50, and modular NR 30. While the variation of ship speed 0, 14, and 18 knots. The direction of the arrival of waves 0, 45, 90, 135, and 180 degrees. Based on data analysis carried out on ship motion, the NR 30 type fin stabilizer is far superior to the others with a maximum value of 4.04- degree roll movement, 0.543- degree pitch movement, and 0.4116 heave acceleration movement. Type NR 30 also has the best comfort on the moderate Motion Sickness Incidence (MSI) Criteria.

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Control of ship roll motion by active fins using fuzzy logic

Cited by 11 publications

References 14 publications

Adaptive backstepping control for ship nonlinear active fin system based on disturbance observer and neural network

Adaptive backstepping control for ship nonlinear active fin system based on disturbance observer and neural network

Fin Effect on Pitch Motion and the Avoidance of Initiation of Parametric Roll

Numerical Analysis Seakeeping and Motion Sickness Incidence (Msi) on Hospital Ships by Adding Fins Stabilizer

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