Mathematical Modeling of the Operating Process in LS Hydraulic Drive Using MatLab GUI Tools

Petrov, Oleksandr; Slabkyi, Andrii; Vishtak, Inna; Kozlov, Leonid

doi:10.1007/978-3-030-50491-5_6

Cited by 5 publications

(6 citation statements)

References 15 publications

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“…За формулами ( 4) -(8) проводимо розрахунок в програмі Mathcad (Petrov, Slabkyi, Vishtak, & Kozlov, 2020). Далі наводиться графік результатів розрахунку реакцій враховуючи змінний кут γ = 0 о -360 о (рис.…”

Section: методика використання комп'ютерних технологій для активізаці...unclassified

“…3). Використання сучасних методів дослідження реакцій в'язей плоскої рами активізує самостійну роботу студентів при виконанні задач РГЗ (Petrov, Slabkyi, Vishtak, & Kozlov, 2020;. Отже, вони набувають навичок проведення досліджень і формулювання висновків за отриманими під час досліджень результатами.…”

Section: методика використання комп'ютерних технологій для активізаці...unclassified

“…Харків, «Фоліо». Petrov, O., Slabkyi, A., Vishtak, I., & Kozlov, L. (2020). Mathematical Modeling of the Operating Process in…”

Section: методика використання комп'ютерних технологій для активізаці...unclassified

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Methods of using computer technologies for activation of independent work of theoretical mechanics students

Vishtak

2023

HealSafPed

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The article substantiates the necessity of students' independent work. An example of the use of computertechnologies and programs to activate and optimize their work is given.The purpose of the article is to substantiate the given methodology of using computer technologies andprograms to activate and optimize their independent work on theoretical mechanics.The main goal of higher education is to make a student a specialist who is capable of developing andmastering new knowledge in accordance with modern requirements. That is, the future specialist must not onlylearn knowledge, but also creatively apply it, be able to pose new problems, analyze options for theirimplementation and find the right optimal results. When working independently, the purpose of each task mustbe understood, that is, to complete the task, students rely on their knowledge, subject skills, experience instudying this discipline, as well as the ability to use teaching methods. In the process of independent work, thestudent can: learn theoretical material from this discipline; consolidate knowledge of the theoretical materialin a practical way (performance of calculation and graphic works (CGW), control works (CW) etc.); useacquired knowledge and practical knowledge to analyze the situation and work out the right decision, to formone's own position, theory, model. Therefore, the student's independent work is the basis of the educationalprocess and forms such personality traits as: independence; creative attitude to work; responsibility; ability to54plan work; the ability to choose the method (methods) of the fastest and most rational solution to the problem (task); the ability to quickly and qualitatively make corrections in the execution process and analyze the work performed and build ways for further work.It should be emphasized that independent work is performed in a higher educational institution, dormitory, home environment, computer center without the direct participation of a teacher. But when performing the work, the student relies on his knowledge, skills, experience in the discipline, which he receives under the guidance of the teacher.

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Section: методика використання комп'ютерних технологій для активізаці...unclassified

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Methods of using computer technologies for activation of independent work of theoretical mechanics students

Vishtak

2023

HealSafPed

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“…Отже, здобувач повинен не лише вивчати теорію, але і активно застосовувати її, а також бути готовим до розв'язання нових завдань і пошуку креативних інженерних рішень (Казак, 2018;Kukhar, Anishchenko, Vishtak, 2022;Petrov, Slabkyi, Vishtak, Kozlov, 2020;Федотов, Віштак, Молодецька, 2017).…”

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Methods of using problem-based learning in theoretical mechanics lectures

Vishtak

2024

HealSafPed

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The article substantiates the need for the implementation of creative engineering thinking in students of higher education when studying the discipline "Theoretical Mechanics". Examples of problematic issues and methods of solving them using the analysis of the proposed hypotheses are given. The purpose of the article is to justify the given method of using problem-based learning in lecture classes on theoretical mechanics using active learning methods. The main goal of higher education is the formation of competences in learners, which will allow them to constantly develop and adapt to modern requirements in the conditions of constant development of industry. The main emphasis is placed not only on the assimilation of knowledge, but also on its creative application, the ability to solve new tasks, analyze different options and achieve optimal results. Solving creative engineering problems in the style of a business game or a game session reveals and reveals creative skills and abilities, significantly increases the individual creative potential of most of the applicants and contributes to the formation of professional production skills. The work of students in such classes includes a number of actions aimed at deepening knowledge, consolidating it in practical situations and developing personal qualities, such as independence, creativity, responsibility, work planning, the ability to quickly adapt to changes and make adjustments in the work process. Active participation of students in this process is also important, which contributes to their intellectual growth and development. Problem-based learning is a method in education that actively involves students in finding, analyzing and solving real problems or situations that arise in the context of studying a specific topic or discipline. The main aspects of problem-based learning include: - active participation of students – in problem-based learning, students act as active participants in the educational process. They are aimed at independent study of the material, problem solving and joint discussion. - stimulation of critical thinking – promotes the development of critical thinking in students. They learn to analyze information, make hypotheses, solve problems and argue their opinions. - collaborative learning – where group projects or tasks are often used, which promotes the development of communication skills, cooperation and mutual assistance between students. - interdisciplinary approach – can cover different aspects from different disciplines, which allows students to consider the problem from different points of view and apply knowledge from different areas. - development of independence and initiative – this teaching method stimulates independence and initiative of students. They learn to independently find information, formulate questions and find their own ways to solve problems. - application of skills in real life – promotes the development of skills that can be applied in real life situations. It helps students understand how their knowledge can be useful in practical activities. These aspects allow problem-based learning to be an effective learning method that promotes deep learning of the material and development of key competencies in students.

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“…На основі розрахункової схеми, представленої на рис. 1 складено математичну модель гідроприводу та проведено математичне моделювання робочих процесів[9] з метою виявлення стійкості роботи гідроприводу при різних сполученнях його параметрів та умов роботи.На рис. 3 представлено межі стійкості роботи гідроприводу при зміні навантаження рЦ та величини витрати гідродвигуна QЦ, а також температури робочої рідини t. Але при цьому діапазони зміни навантаження рЦ ≤ 200•10 5 Па та витрати робочої рідини гідродвигуна QЦ ≤ 1,3•10 -3 м 3 /с знаходяться у стійкій області.…”

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Research of stability of Load-sensing hydraulic drive operation, on the base of multimode directional control valve

Petrov¹,

Kozlov²,

Semichastnova³

et al. 2021

JMET

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The article describes a new scheme of a hydraulic drive, which, thanks to the original design of a multimode directional control valve, has energy-efficient properties that are characteristic of load-sensing hydraulic drives. The proposed design of the multimode directional control valve ensures the operation of the hydraulic drive in four modes – unloading the hydraulic pump, regulating the flow of the hydraulic motor, the maximum flow of the hydraulic motor and protection against overload. In each of these modes, the hydraulic drive operates with low power losses due to the presence of a constant balancing pressure drop. This value is formed by a combination of design parameters of the directional control valve. The proposed value of the value of the balancing pressure drop of 0,7-0,8 MPa provides high energy efficiency of the hydraulic drive in the most critical operating mode – regulation of the hydraulic motor flow. In order to ensure the stability of the energy-efficient operation of the hydraulic drive in this mode, a research was made of the stability of transient processes with various combinations of design parameters of the overflow valve of the hydraulic control valve, as well as changes in the operating conditions of the hydraulic drive. As a result of theoretical researches, on the basis of mathematical modeling of working processes, combinations of design parameters of the hydraulic lock and the spool of the overflow valve were identified, which ensure the stability of the hydraulic drive in the mode of regulating the flow of the hydraulic motor. In particular, these are such parameters as the stiffness of the springs of the hydraulic lock and the overflow valve, the diameter and angle of inclination of the edge of the overflow valve spool, the area of the radial holes and the auxiliary choke of the overflow valve. It was also determined that in this mode, the stability of the hydraulic drive will be ensured under conditions of a load pressure of up to 20 MPa, a hydraulic motor flow rate of 100 l / min and a working fluid temperature of 80 °C.

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Mathematical Modeling of the Operating Process in LS Hydraulic Drive Using MatLab GUI Tools

Cited by 5 publications

References 15 publications

Methods of using computer technologies for activation of independent work of theoretical mechanics students

Methods of using computer technologies for activation of independent work of theoretical mechanics students

Methods of using problem-based learning in theoretical mechanics lectures

Research of stability of Load-sensing hydraulic drive operation, on the base of multimode directional control valve

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