Ship hull–propeller system optimization based on the multi-objective evolutionary algorithm

Ghassemi, Hassan; Zakerdoost, Hassan

doi:10.1177/0954406215616655

Cited by 16 publications

(9 citation statements)

References 23 publications

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“…The design method proposed in [18] provides a comprehensive approach to multi-objective optimization of the hull-propeller system of a ship. Two objective functions, i.e.…”

Section: Literature Reviewmentioning

confidence: 99%

Optimization Model to Manage Ship Fuel Consumption and Navigation Time

Rudzki

Gomulka

Hoang

2022

Polish Maritime Research

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Owners of vessels are interested in the lowest possible operating costs. These costs are mainly related to fuel consumption during navigation. To manage it rationally, the main decision-making problem is selecting the proper parameters of the ship’s propulsion system during navigation. In practice, operators of ships equipped with controllable pitch propellers controlled in manual mode make a selection of the commanded outputs based on their own knowledge, intuition, and all accessible information regarding sea conditions. In many cases, their decisions are unreasonable or incorrect. Therefore, it would be desirable to support their decision-making in selecting the commanded outputs. For this reason, we have decided to develop a decision support system in the form of an expert system. This computer-aided system supports the selection of the commanded outputs of the ship’s propulsion system. The most important component of this system is the two-criteria optimization model, allowing the rational management of the ship fuel consumption and navigation time.

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“…The design method proposed in [18] provides a comprehensive approach to multi-objective optimization of the hull-propeller system of a ship. Two objective functions, i.e.…”

Section: Literature Reviewmentioning

confidence: 99%

Optimization Model to Manage Ship Fuel Consumption and Navigation Time

Rudzki

Gomulka

Hoang

2022

Polish Maritime Research

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“…The design hull form of a ship taking into account proper speed have been studied such as Lu et al [7] proposed an innovative methodology of synchronous local optimization of ship bow and stern hull form considering the whole ship speed range. Ghasemi and Zakerdoost [8] proposed design methodology that represents a comprehensive approach to optimize the hull-propeller system simultaneously wherein the well-known evolutionary algorithm based on NSGA-II was employed to handle the multi-objective problems, where the main propeller and hull coefficients are the unknown and are considered as design variables.…”

Section: Stapersma and Woudmentioning

confidence: 99%

Investigating the Performance of a Ship by Matching the Stern Hull Form to Propeller and Engine Power

Anggriani

Baso

2021

EPI-IJE

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Designing the form of the ship stern hull could have some impacts on the efficiency of ship propeller and the requirement of the ship speed. Therefore, stern hull form of a ship matched to its propeller and engine power is important consideration in preliminary ship design stage. The main objective of this study is to investigate ship performance by matching the stern hull shape to the propeller diameter and engine power toward high speed. This study was conducted by free running model test and Maxsurf Resistance application. The stern forms were employed U-shape and V-shape. In addition, the fixed pitch propeller (FPP) with three blades was used and the diameter is varied into three sizes 0.032 m, 0.040 m, and 0.048 m. The results show the increase of propeller diameter increases model’s speed for both U-shape and V-shape stern and the effect of the propeller diameter on the speed could be described by using the equations of second-order polynomial. The optimum propeller diameter could be determined taking into account stern hull form, stern shape, tip clearance, and proper speed where then propeller diameter related to draft is given by 0.79T with tip clearance 10%Dp for both U-shape and V-shape. The ship resistances of U-shape stern at Fr 0.221 and V-shape at 0.208 are obtained approximately 89.797 KN and 77.10 KN respectively. Furthermore, the powers of ship for both U-shape and V-shape at those Fr are obtained 904,374 KW and 726,807 KW respectively. Finally, the best stern hull form matched to propeller diameter and engine power is selected and given by U-shape stern.

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“…Second, the compromise results are chosen for comparison. The definition of the compromise solution is shown in Figure 6 [35]. The compromise solution is the point of minimum distance from the optimized solution to the utopia solution.…”

Section: ⅳ Parameters Tuning Of Nonlinear Pidmentioning

confidence: 99%

Global Asymptotic Nonlinear PID Control With a New Generalized Saturation Function

Niu

Qu²

2020

IEEE Access

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In order to solve the problem of the strict condition of traditional saturation function, a new generalized saturation function was proposed and applied in nonlinear PID (Proportion-Integration-Differentiation) control laws, which consisted of linear D + nonlinear PI and linear PD + nonlinear PI. The new generalized saturation function has powerful reaction near the equilibrium point, and has the capability to make the control converge to the equilibrium point swiftly. The global asymptotic stability condition of nonlinear PID control laws were derived by employing Lyapunov's method and LaSalle's invariance principle. In order to improve the accuracy of nonlinear PID control laws, time integration of the absolute value of position tracking error and time integration of the absolute value of torque error were chosen as the objective functions. Global asymptotic stability conditions and rated driving torque of each motor were set as the constraint conditions. Nonlinear PID controller parameters were tuned by employing multi-objective genetic algorithm, non-dominated sorted genetic algorithm-II (NSGA-II). Compared with the optimization results of nonlinear PID with traditional saturation function, the accuracy of position tracking using the proposed method was improved by nearly one order of magnitude. The new generalized saturation functions with minimum time integration of position tracking error were selected to study the robustness of the nonlinear PID controller in modeling uncertainty, input torque disturbance, and noise. The position tracking accuracy of the proposed method compared to those of the traditional PID controller and nonlinear PID controller with traditional saturation function was improved by nearly two orders of magnitude and one order of magnitude, respectively. The introduced saturation function significantly improves position tracking accuracy and robustness of the nonlinear PID controller.

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Ship hull–propeller system optimization based on the multi-objective evolutionary algorithm

Cited by 16 publications

References 23 publications

Optimization Model to Manage Ship Fuel Consumption and Navigation Time

Optimization Model to Manage Ship Fuel Consumption and Navigation Time

Investigating the Performance of a Ship by Matching the Stern Hull Form to Propeller and Engine Power

Global Asymptotic Nonlinear PID Control With a New Generalized Saturation Function

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