Comparison of Fuzzy System with Neural Aggregation FSNA with Classical TSK Fuzzy System in Anti-Collision Problem of USV

Szymak, Piotr

doi:10.1515/pomr-2017-0085

Cited by 6 publications

(2 citation statements)

References 16 publications

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“…Table 1. To ignore the boundary effects, the widthdepth ratio of each model is larger than 10 [26][27][28][29][30][31][32]. The depth is divided into 12 layers, as shown in Figs.…”

Section: -D Numerical Modelling Techniquesmentioning

confidence: 99%

Prediction and correction of scaling effects on velocity profile in hydraulic laboratory experiments

Zhang¹,

Wang²,

Chen³

et al. 2019

Desalination and Water Treatment

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Due to the geometric distortion in distorted hydraulic laboratory experiments, velocity profile cannot maintain as constant as required by the traditional criteria. Scaling effects, which lack quantitative researches, cannot be avoided even if the Froude and drag coefficient similitude criteria were satisfied. Prediction formulas of scaling effect rate are established in this research to theoretically reveal the quantitative relations between velocity profile distortion and experimental parameters. They are directly related to three parameters, distorted ratio, relative water depth, and relative bed roughness. In vertical direction, most effects happen near the bed and the deviation increases with distortion ratio. The similarity of secondary flow is worse and more complicated than that of stream-wise flow. The correction method, which is the improvement of traditional similitude criteria, can effectively reduce scaling effects when converting experimental results into their corresponding values in the prototype. Three dimensional numerical models are built to verify the accuracy of the prediction formulas and correction method.

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“…Table 1. To ignore the boundary effects, the widthdepth ratio of each model is larger than 10 [26][27][28][29][30][31][32]. The depth is divided into 12 layers, as shown in Figs.…”

Section: -D Numerical Modelling Techniquesmentioning

confidence: 99%

Prediction and correction of scaling effects on velocity profile in hydraulic laboratory experiments

Zhang¹,

Wang²,

Chen³

et al. 2019

Desalination and Water Treatment

View full text Add to dashboard Cite

show abstract

“…Extensive development work is currently underway on the concept of the Maritime Autonomous Surface Ship (MASS), which requires new solutions in many areas: law, economics, guidance, control and navigation [1][2][3]. Automated navigation tasks require the further development of high-level control systems; in particular, with respect to such issues as path planning and collision avoidance [4][5][6][7][8][9][10][11][12][13][14][15]. However, the basic issue in the research on developing autonomous marine surface vessels is motion control.…”

Section: Introductionmentioning

confidence: 99%

Control of Dynamic Positioning System with Disturbance Observer for Autonomous Marine Surface Vessels

Tomera

Podgórski

2021

Sensors

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The main goal of the research is to design an efficient controller for a dynamic positioning system for autonomous surface ships using the backstepping technique for the case of full-state feedback in the presence of unknown external disturbances. The obtained control commands are distributed to each actuator of the overactuated vessel via unconstrained control allocation. The numerical hydrodynamic model of CyberShip I and the model of environmental disturbances are applied to simulate the operation of the ship control system using the time domain analysis. Simulation studies are presented to illustrate the effectiveness of the proposed controller and its robustness to external disturbances.

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Development of the General Structure of the Knowledge Base for Neuro-Fuzzy Models

Kopyrin

Vidishcheva

Makarova

2020

VIII International Scientific Siberian Transport Forum

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Comparison of Fuzzy System with Neural Aggregation FSNA with Classical TSK Fuzzy System in Anti-Collision Problem of USV

Abstract: The paper presents the research whose the main goal was to compare a new Fuzzy System with Neural

Cited by 6 publications

References 16 publications

Prediction and correction of scaling effects on velocity profile in hydraulic laboratory experiments

Prediction and correction of scaling effects on velocity profile in hydraulic laboratory experiments

Control of Dynamic Positioning System with Disturbance Observer for Autonomous Marine Surface Vessels

Development of the General Structure of the Knowledge Base for Neuro-Fuzzy Models

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