https://card-file.onaft.edu.ua/handle/123456789/5691 2022-03-03T17:37:30Z 2022-03-03T17:37:30Z V. Levinskyi, M. Levinskyi https://card-file.onaft.edu.ua/handle/123456789/5739 2019-12-23T12:57:03Z 2017-01-01T00:00:00Z

Title: MODEL-ORIENTED METHOD OF DESIGN IMPLEMENTATION WHEN CREATING DIGITAL FILTERS Authors: V. Levinskyi, M. Levinskyi Abstract: This article discusses the example of model-oriented method of design and development of digital low-pass filters (LPF) for automatic control systems (ACS). Typically, high frequency noise and disturbance attenuation is carried out by analogue LPF. However, technical implementation of analogue filters higher than the second order arouse certain difficulties related with the need of precise passive components ratings selection (resistors, capacitors). If the noise and disturbances spectral composition is known, it is possible to build digital LPF with the Nyquist frequency greater than the maximum frequency in the noise spectrum. Such possibility has appeared because of cheap, energy-efficient, high-speed 32-bit microcontrollers market entry. They have analogue signals sampling rate of 30 kHz and above. The traditional approach using the “manual” method of filter parameters calculation, obtaining their recurrence expressions and further program implementation requires high qualification and a lot of time consumption from the developer. An alternative to this approach is the model-oriented method of design (MOMD) in MatLab environment when in the one environment the design of digital LPF, verificaton of its performance as a part of the ACS, generation and compilation of program codes for selected microcontroller family take place. MOMD can also be used in the designs of bandpass and bandstop filters for adaptive control systems or systems of technical diagnostics. If during the commissioning or the operation of ACS there is a need in digital LPF parameters change then this operation can be performed within half an hour. MOMD technology allows to significantly reduce the time for developing a specific product without loss of quality in its design ‘cause of extensive possibilities of MatLab development environment.

2017-01-01T00:00:00Z I. Slobodyan, V. Lozhechny`kov, A. Stopakevy`ch https://card-file.onaft.edu.ua/handle/123456789/5742 2019-12-23T12:57:22Z 2017-01-01T00:00:00Z

Title: IMPROVEMENT OF MANAGEMENT OF STEAM GENERATORS IN NUCLEAR AND THERMAL POWER PLANTS Authors: I. Slobodyan, V. Lozhechny`kov, A. Stopakevy`ch Abstract: The paper formulated optimization problem formulation production of carbon products. The analysis of technical and economic parameters that can be used to optimize the production of carbonaceous products had been done by the author. To evaluate the efficiency of the energy-intensive production uses several technical and economic indicators. In particular, the specific cost, productivity, income and profitability of production. Based on a detailed analysis had been formulated optimality criterion that takes into account the technological components of profitability. The components in detail the criteria and the proposed method of calculating non-trivial, one of them - the production cost of each product. When solving the optimization problem of technological modes of production into account constraints on the variables are optimized. Thus, restrictions may be expressed on the number of each product produced. Have been formulated the method of calculating the cost per unit of product. Attention is paid to the quality indices of finished products as an additional constraint in the optimization problem. As a result have been formulated the general problem of optimizing the production of carbon products, which includes the optimality criterion and restrictions.

2017-01-01T00:00:00Z А. В. Ухина, Т. П. Яценко, В. С. Ситников https://card-file.onaft.edu.ua/handle/123456789/5741 2019-12-23T12:57:36Z 2017-01-01T00:00:00Z

Title: ЛИНЕАРИЗАЦИЯ В ЗАДАЧЕ УПРАВЛЕНИЯ ХАРАКТЕРИСТИКОЙ ЦИФРОВОГО ФИЛЬТРА ДЛЯ СПЕЦИАЛИЗИРОВАННОЙ КОМПЬЮТЕРНОЙ СИСТЕМЫ Authors: А. В. Ухина, Т. П. Яценко, В. С. Ситников Abstract: dependencies that could be used to obtain linear characteristic of frequency response control are defined. The possibility of such control is shown.

2017-01-01T00:00:00Z O. Titlova, V. Khobin, O. Titlov https://card-file.onaft.edu.ua/handle/123456789/5740 2019-12-23T12:57:49Z 2017-01-01T00:00:00Z

Title: CONCEPT OF AUTOMATIC CONTROL SYSTEM FOR IMPROVING THE EFFICIENCY OF THE ABSORPTION REFRIGERATING UNITS Authors: O. Titlova, V. Khobin, O. Titlov Abstract: The general concept of the automatic control systems constructing for increasing the efficiency of the artificial cold production process in the absorption refrigerating units is substantiated. The described automatic control systems provides necessary degree of the ammonia vapor purification from the water in all absorption refrigerating units modes and minimizes heat loss from the dephlegmator surface.

2017-01-01T00:00:00Z