Fuzzy terminal sliding mode control for extracting maximum marine current energy

Prediction of fuel consumption rate level of a vessel per voyage posed to be a challenge under uncertainties. In such uncertain conditions, revealing of fuel consumption rate levels of the fleet of vessels is deemed imperative to ensure effective and efficient operations of the vessels per voyage. Therefore, development of uncertainty treatment model is necessary in this research. A combined algorithm that is made up of fuzzy rule base and utility theory methods is incorporated in the investigation of the fuel consumption rate levels of marine vessels. The mechanism of the algorithm is used to capture and combine all the important parameters that determine the fuel consumption rate level of each marine vessel. The workability of the model is demonstrated. The produced results revealed that the combined algorithm can support estimation of the fuel consumption rate levels of marine vessels and show which vessel is better than the other. Based on the results of this article, the management and crew of a marine vessel are equipped with the necessary decision support tool to optimize, implement and manage improvements on the performance characteristics and fuel consumption rate of their marine vessels during voyages.

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“…These FRB steps have been effectively applied in various publications as a stand-alone and in combination with other algorithm. 22–25…”

Section: Methodsology Of the Researchmentioning

confidence: 99%

“…These FRB steps have been effectively applied in various publications as a stand-alone and in combination with other algorithm. [22][23][24][25] Development of membership functions of parameters. scheme for capturing human knowledge that is imprecise by nature.…”

Section: Frbmentioning

confidence: 99%

A combined algorithm approach to fuel consumption rate analysis and prediction of sea-worthy diesel engine-powered marine vessels

Nwaoha

Ombor

Okwu

2016

Proceedings of the Institution of Mechanical Engineers, Part M:

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“…Regarding the control problem of the complex system in real world, a fuzzy terminal sliding mode control strategy is proposed in (Gu, 2015) for the control of marine current power system. The proposed control strategy mainly consists of two major parts, which are a fuzzy logic controller for deriving the reference generator current and a nonsingular terminal sliding mode controller to track the aforementioned derived current, respectively.…”

Section: Related Workmentioning

confidence: 99%

The Design of Finite-time Convergence Guidance Law for Head Pursuit based on Adaptive Sliding Mode Control

Zhang

Wang

2016

Proceedings of the 13th International Conference on Informatics in Control, Automation and Robotics

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The high-speed target interception plays a vital role in the modern industry with many application scenarios. Due to the difficulties of direct interception in high speed, the head pursuit intercept is frequently considered for the target of re-entering flight vehicle. In this paper, a novel terminal sliding mode control method is proposed for the interception of high-speed maneuvering target, in which the finite convergence guidance law is initially designed under the constraint of intercept angle. By introducing the mathematical model of correlative motion between interceptor and target, the sliding surface is researched and designed to meet the critical conditions of head pursuit intercepting. Meanwhile, considering the dynamic characteristics of both interceptor and target, an adaptive guidance law is therefore proposed to compensate the modelling errors, which goal is to improve the accuracy of interception. The stability analysis is theoretically proved in terms of the Lyapunov method. Numerical simulations are presented to validate the robustness and effectiveness of the proposed guidance law, by which good intercepting performance can be supported.

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“…However, external disturbances and parameter changes have not been considered. In [7], a fuzzy sliding mode controller that adaptively extracts the maximum tidal power under swell effects is developed. However, the parameter variations and uncertainties have not been considered.…”

Section: Introductionmentioning

confidence: 99%

Energy-Based Combined Nonlinear Observer and Voltage Controller for a PMSG Using Fuzzy Supervisor High Order Sliding Mode in a Marine Current Power System

et al. 2021

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A permanent magnet synchronous generator (PMSG) in s grid-connected tidal energy conversion system presents numerous advantages such as high-power density and ease of maintenance. However, the nonlinear properties of the generator and parametric uncertainties make the controller design more than a simple challenge. Within this paper we present a new combined passivity-based voltage control (PBVC) with a nonlinear observer. The PBVC is used to design the desired dynamics of the system, while the nonlinear observer serves to reconstruct the measured signals. A high order sliding-mode based fuzzy supervisory approach is selected to design the desired dynamics. This paper addresses the following two main parts: controlling the PMSG to guarantee the maximum tidal power extraction and integrate into to the grid-side converter (GSC), for this the new controller is proposed. The second task is to regulate the generated reactive power and the DC-link voltage to their references under any disturbances related to the machine-side converter (MSC). Furthermore, the robustness of the controller against parameter changes was taken into consideration. The developed controller is tested under parameter variations and compared to benchmark nonlinear control methods. Numerical simulations are performed in MATLAB/Simulink which clearly demonstrates the robustness of the proposed technique over the compared control methods. Moreover, the proposed controller is also validated using a processor in the loop (PIL) experiment using Texas Instruments (TI) Launchpad.

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Fuzzy terminal sliding mode control for extracting maximum marine current energy

Cited by 28 publications

References 18 publications

A combined algorithm approach to fuel consumption rate analysis and prediction of sea-worthy diesel engine-powered marine vessels

A combined algorithm approach to fuel consumption rate analysis and prediction of sea-worthy diesel engine-powered marine vessels

The Design of Finite-time Convergence Guidance Law for Head Pursuit based on Adaptive Sliding Mode Control

Energy-Based Combined Nonlinear Observer and Voltage Controller for a PMSG Using Fuzzy Supervisor High Order Sliding Mode in a Marine Current Power System

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