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Published By Lviv Polytechnic National University

2707-6784

2021 ◽  
Vol 3 (1) ◽  
pp. 17-20
Author(s):  
Kostyantyn Kolesnyk ◽  

In the work the information support for carrying out of simulation modeling of the industrial robot manipulator in the Matlab program is developed. The structure of the program for research of kinematics of industrial robot is developed. A graphical interface using the Matlab GUI has been developed for simulation of an industrial robot. The Denova-Hartenberg parameters for modeling the motion of an industrial robot are derived from the 3D model of the ABB IRB 2400 robot manipulator.


2021 ◽  
Vol 3 (1) ◽  
pp. 37-44
Author(s):  
Petro Kosoboutskyy ◽  
◽  
Mariana Karkulovska ◽  
Yuliia Losynska

In this paper, it is shown that the Fibonacci triangle is formed from the elements of power transformations of a quadratic trinomial. It is binary structured by domains of rows of equal lengths, in which the sum of numbers forms a sequence of certain numbers. This sequence coincides with the transformed bisection of the classical sequence of Fibonacci numbers. The paper substantiates Pascal's rule for calculating elements in the lines of a Fibonacci triangle. The general relations of two forgings of numbers in lines of a triangle of Fibonacci for arbitrary values are received


2021 ◽  
Vol 3 (1) ◽  
pp. 61-66
Author(s):  
Ihor Farmaha ◽  
◽  
Viktor Hadomskyi ◽  

This paper is devoted develop software for time series forecasting using Python programming language. SARIMA model was used to develop the system.


2021 ◽  
Vol 3 (1) ◽  
pp. 1-10
Author(s):  
Yaroslav Sokolovskyy ◽  
◽  
Mariana Levkovych ◽  
Yaroslav Kaspryshyn ◽  
◽  
...  

Deformation processes in media with fractal structure have been studied. At present, research on the construction of mathematical methods and models of interconnected deformation-relaxation and heat-mass transfer processes in environments with a fractal structure is at an early stage. There are a number of unsolved problems, in particular, the problem of correct and physically meaningful setting of initial and boundary conditions for nonlocal mathematical models of nonequilibrium processes in environments with fractal structure remains unsolved. To develop adequate mathematical models of heat and mass transfer and viscoelastic deformation in environments with fractal structure, which are characterized by the effects of memory, self-organization and spatial nonlocality, deterministic chaos and variability of rheological properties of the material, it is necessary to use non-traditional approaches. -differential operators. The presence of a fractional derivative in differential equations over time characterizes the effects of memory (eridity) or non-marking of modeling processes. The implementation of mathematical models can be carried out by both analytical and numerical methods. In particular, in this paper the integral form of fractional-differential rheological models is obtained on the basis of using the properties of the non-integer integral-differentiation operator and the Laplace transform method. The obtained analytical solutions of mathematical models of deformation in viscoelastic fractal media made it possible to obtain thermodynamic functions, creep nuclei and fractal-type relaxation. Developed software to study the effect of fractional differentiation parameters on the rheological properties of viscoelastic media.


2021 ◽  
Vol 3 (1) ◽  
pp. 21-30
Author(s):  
Petro Kosoboutskyy ◽  
◽  
Mykhaylo Lobur ◽  
Yuliia Matviiv-Lozynska ◽  
◽  
...  

METHOD OF STATISTICAL IMITATION, ITS CREATOR S. ULAM AND BASIC PRINCIPLES OF APPLICATION FOR RANDOM PROCESSES MODELING


2021 ◽  
Vol 3 (1) ◽  
pp. 67-71
Author(s):  
Olena Stankevych ◽  

The solution of the dynamic problem of calculation the wave field of displacements on the surface of an elastic half-space caused by the opening of an internal crack under the action of torsional forces is presented. Based on the solutions of the boundary integral equations, the nature of the change in the amplitude-frequency characteristics of elastic oscillations on the surface of a rigid body depending on the size of the defect is shown.


2021 ◽  
Vol 3 (1) ◽  
pp. 45-50
Author(s):  
Olena Stankevych ◽  
◽  
Nazar Stankevych ◽  

The dynamic problem of the displacement field in an elastic half-space caused by the time-steady displacement of the surfaces of the system of disc-shaped coplanar cracks is solved. The solutions are obtained by the method of boundary integral equations. The dependences of elastic displacements on the surface of the half-space on the wave number, the number of defects and the depths of their occurrence are constructed.


2021 ◽  
Vol 3 (1) ◽  
pp. 11-16
Author(s):  
Petro Kosoboutskyy ◽  
◽  
Mariana Karkulovska ◽  

This paper studies regularities of proportional division, on the basis of which we show the possibility of effective application of the golden section method to modeling regularities of atomic systems and positioning of elements of noble gases of the periodic table. It is illustrated that by partial reconstruction of the Mendeleev tables, the elements of noble gases can be arranged along lines whose slope tangents in the coordinate system “the atomic number – the relative atomic mass” are in close agreement with the sequence of inverse Fibonacci numbers. It was shown that given the correct slope of axes, slope tangents of the corresponding lines does not change.


2021 ◽  
Vol 3 (1) ◽  
pp. 51-54
Author(s):  
Andrianna Yovbak ◽  
◽  
Igor Farmaha ◽  

In the work the automated methods for assurance user’s effective performance are investigated. The structure of the automated system of support of human productivity is developed. For practical implementation, the MEAN technology stack is used, the interaction of its component is described. Automated methods in the form of an application are implemented and its main advantages are determined.


2021 ◽  
Vol 3 (1) ◽  
pp. 31-36
Author(s):  
Ruslan Holovatskyy ◽  
◽  
Mykhaylo Lobur ◽  

In this paper, a block diagram of a microelectro-optical intelligent passive infrared motion detector is proposed. On the basis of the proposed structural scheme and analytically conducted synthetic processing of information from primary sources [5-17], boundary conditions for the directivity diagram of such a detector are determined. The analytical information collected in this article will be necessary for further modeling in computer-aided design with a view to new developments and improvements to existing motion detectors.


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