Факультет психології, історії та соціології

Permanent URI for this collectionhttps://ekhsuir.kspu.edu/handle/123456789/248

Browse

Author: search.filters.author.Kobets, V.Subject: search.filters.subject.optimal control

Search Results

Now showing 1 - 2 of 2
  • No Thumbnail Available
    Item
    INTELLIGENT SYSTEM CONTROL OF THE VESSEL EXECUTIVE DEVICES REDUNDANT STRUCTURE
    (2023) Zinchenko, S.; Kobets, V.; Tovstokoryi, O.; Nosov, P.; Popovych, I. S.; Попович, І. С.
    The article examines the issues of optimal control of vessels with redundant structures of executive devices on the example of an offshore vessel with two stern azimuth control devices (ACD) and a bow thruster. Known technical solutions for optimal control of redundant structures in the aviation, space, marine and other industries. The nearest technical solutions in the shipping are dynamic positioning systems (DP-systems) of manufacturers Navis, Marine Technologies, Rolls Royce, Transas, Consberg. The main purpose of such systems is to maintain the vessel in a given position with the help of active control during work (drilling, cable laying, cargo overloading, etc.). The main components of DP-systems are: sensors for measuring the absolute and relative position of the vessel (DGPS and Reference Systems), onboard computer with software and redundant structures of executive devices. Redundant structures in DP-systems are used to increase the reliability of the automated system. The article developed a method of using redundant structures also for optimization of control processes. The purpose of the work is to automate and optimize the processes of controling vessels with redundant structures of executive devices. On the example offshore vessel with two stern ACD and a bow thruster, optimal controls are considered that ensure: minimum energy consumption for performing DP operations, maximum control forces in the channels of longitudinal and lateral movement, which are used to move away from the platform in the presence of a downwind, as well as reconfiguration of redundant structures. The results of the experiment showed that the optimization of control processes allows to reduce energy consumption by (35–50) % and increase the control forces of the structure in the channels of longitudinal and lateral movement. At the same time, the additional load on the calculation cycle of the on-board controller, caused by the solution of optimization problems, is 25–50 ms, which is within (2.5–5) %.
  • No Thumbnail Available
    Item
    SOLUTION OF THE PROBLEM OF OPTIMIZING ROUTE WITH USING THE RISK CRITERION
    (2022) Mamenko, P.; Zinchenko, S.; Kobets, V.; Nosov, P.; Popovych, I. S.; Маменко, П. П.; Зінченко, С. М.; Кобець, В. М.; Носов, П. С.; Попович, І. С.
    The aim of the work is to determine the conditions of optimality in the task of plotting the course of the vessel and the operation of divergence of vessels in conditions of intensive navigation. The need for such work is dictated, firstly, by an increase in the intensity of shipping and, secondly, by the emergence of autonomous ships and transport systems, the traffic control algorithms of which obviously require an optimal approach. The criterion of optimality in problems of this class is the expected risk, one of the components of which is the risk of collision of ships. Based on the analysis of methods for constructing ship divergence algorithms, the task is to find a control algorithm that delivers the best results for all participants in the operation. This formulation of the task greatly facilitates the forecast of the actions of all participants in the discrepancy and is especially expedient in the case of participation in the operation of an autonomous system or a ship with which no contact has been established. Theoretically, the task belongs to the most difficult class of control problems - optimal control of a distributed dynamic system with a vector - a goal functional [3, 5, 8, 13–15]. The ability to obtain a general solution to the task of optimal ship control makes this study expedient. Метою роботи є оптимізація прокладки маршруту судна та операцій розходження суден в умовах інтенсивної навігації. Потреба у такій роботі пояснюється тим, що за останні роки суттєво збільшилась інтенсивність судноплавства, а також з’явилися автономні судна і транспортні системи, алгоритми керування якими орієнтовані на оптимізацію процесів керування. У задачі, що розглядається, критерієм оптимальності є очікуваний ризик як у задачі прокладки маршруту, так і у задачі розходження суден. Базуючись на існуючих методах, задачею дослідження є синтез такого алгоритму розходження, який забезпечив би найкращий результат для усіх учасників операції. Таке формулювання завдання суттєво полегшує прогноз дій усіх учасників операції, особливо у випадках участі у розходженні автономної системи чи судна, з яким не встановлено контакту. Теоретично задача належить до найбільш складного класу задач оптимального керування з цільовим вектор-функціоналом. Можливість отримати рішення такої задачі робить дане дослідження дуже важливим.