Improving tools for diagnosing technical condition of ship electric power installations

Sandler, Albert; Budashko, Vitalii

doi:10.15587/1729-4061.2022.266267

Cited by 2 publications

(2 citation statements)

References 27 publications

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“…This allows phase shift configurations to be designed to achieve the target behavior of measurement parameters such as linearity or sensitivity. The further development of this approach consists in the application of virtual devices for the determination of virtual delay measurement lines, self-identification and auto-diagnosis of FOI of the proposed survey topology for a specific VPS [23,[25][26][27][28][29].…”

Section: Discussion Of Results Of Investigating the Improved Mathemat...mentioning

confidence: 99%

Improving the mathematical model of a fiber-optic inclinometer for vibration diagnostics of elements in the propulsion system with sliding bearings

Sandler,

Budashko,

Khniunin

et al. 2023

EEJET

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The operational capacity of a vessel’s propulsion system (VPS) has an exceptionally large impact on the safety of the ship and shipping as a whole. This requires constant long-term technical diagnostics of VPS elements in order to determine their real resource. First of all, this refers to the bearing units of VPS. The practical use of the concept of continuous diagnostics requires the introduction of the latest means of monitoring the technical condition of VPS, which can significantly increase the reliability of the measurement results. That is why solving the scientific problem of creating diagnostic tools invariant to operating conditions and adapted for continuous, long-term, and reliable monitoring, namely fiber-optic inclinometers (FOI), is relevant. In order to solve the problem, the object of research has been determined – fiber-optic measuring devices for monitoring changes in the geometric position or damping conditions of oscillations in bearing units of VPS elements. The task to improve fiber-optic means was to increase the accuracy of measurement results. The results are in the form of an improved mathematical model of FOI. The difference of the model is the calculation of actual properties of each material layer of the multilayer structure of real fiber-optic waveguides. A distinctive feature of the proposed solution is that the description of the optical-mechanical process in FOI using an improved mathematical model is more accurate and closer to the parameters of the actual process, which are determined experimentally. The results of the research belong to the field of systems and means of technical diagnosis of VPS elements and can be applied primarily on ships, submarines, and vessels of large displacement

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Section: Discussion Of Results Of Investigating the Improved Mathemat...mentioning

confidence: 99%

Improving the mathematical model of a fiber-optic inclinometer for vibration diagnostics of elements in the propulsion system with sliding bearings

Sandler,

Budashko,

Khniunin

et al. 2023

EEJET

View full text Add to dashboard Cite

show abstract

“…Thus, having several linearization species regarding the approximation of the trigonometric function at different operating points, LQR can be applied to these segments independently. A similar application of predictive LQR amplification, but in the field of risk management, was performed in [16], except for the problems of switching between linearization species [17]. If we neglect this aspect, then an unstable state or instability in the system may occur.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Improving the method of linear-quadratic control over a physical model of vessel with azimuthal thrusters

Budashko

Sandler

Khniunin

2023

EEJET

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The object of this research is the algorithms for controlling large-scale models of sea-based vehicles (SBVs). The subject of the research is a linear-quadratic method for controlling a model of the propulsion complex with azimuthal thrusters (ATs) in the aft part. The problem is the solution between the interdependent throws of surge, sway, and yaw speeds predicted by the linear controller. Input signals are the rotational speeds and the angles of ATs propeller thrusts with respect to the diametrical plane of SBVs. During the simulation, step responses of a closed system for overload and rotation speed are compared. Simulation of speed jumps showed an adequate response, in contrast to the speed of rotation of ATs, which showed a greater impact on the system than the orientation of ATs. When modeling the rate of yaw, the behavior of the ATs angle did not correspond to its limitations inherent in the device rotating at the appropriate speed. It is concluded that this is the result of linearization of the actuators, and the proposed solution is to implement the strengthening of the task to better adapt to the rotating behavior of ATs. Despite these problems, the simulation showed the potential of the model and controller for use in similar situations. Several modifications are also offered to significantly improve the model and simulations. One of the main changes that could be made is the implementation of a predictive gain during the linearization of the ATs control system. The practical significance of the results obtained is the fact that the quadratic optimization model is an effective and reliable technique in the process of designing SBVs of various configurations of steering devices for optimal control

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Improving tools for diagnosing technical condition of ship electric power installations

Cited by 2 publications

References 27 publications

Improving the mathematical model of a fiber-optic inclinometer for vibration diagnostics of elements in the propulsion system with sliding bearings

Improving the mathematical model of a fiber-optic inclinometer for vibration diagnostics of elements in the propulsion system with sliding bearings

Improving the method of linear-quadratic control over a physical model of vessel with azimuthal thrusters

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