Том 8 № 4

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Перегляд Том 8 № 4 за Назва

Зараз показуємо 1 - 11 з 11
  • Документ
    A WORD IN DEFENSE OF THE DISCRETE CONTROL SIGNAL
    (2017) A. Pavlov
    In the structure of automatic regulators are still widely used astatic electrical constant speed actuators. An alternative solution is the use of electrical constant speed actuators, but the proportional action. The comparative evaluation of the both version of the actuators. Attention is drawn to the importance of determine the amount of time the full move electrical actuators. It is argued that the most accurate way to determine this is to use simulation modeling. The advantages obtained in case to ensure proportionality of the action of traditional electric constant speed actuator.
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    CONCEPT OF AUTOMATIC CONTROL SYSTEM FOR IMPROVING THE EFFICIENCY OF THE ABSORPTION REFRIGERATING UNITS
    (2017) O. Titlova, V. Khobin, O. Titlov
    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.
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    DETERMINING THE TRANSIENT PROCESS TIME BY THE EXAMPLE OF BODIES HEATING USING A MODIFIED HOMOCHRONICITY NUMBER
    (2017) О. Lysiuk, А. Brunetkin, М. Maksymov
    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.
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    IMPROVEMENT OF MANAGEMENT OF STEAM GENERATORS IN NUCLEAR AND THERMAL POWER PLANTS
    (2017) I. Slobodyan, V. Lozhechny`kov, A. Stopakevy`ch
    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.
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    INVESTIGATION AND ANALYSIS OF AUTOMATIC TESTING SYSTEMS OF APPLICATIONS
    (2017) A. Antonova, A. Proydenko, A. Bodnia
    The focus of this article has been about automated testing in practice. Using testing tools is quite common phenomenon in software companies. The article studied the use of software testing tools. Testing software is enough ordinary things in the IT software development company. But the using automated testing tools only develop in the educational training of IT professionals. Information study of the use of testing tools for the control of software quality IT professionals and IT students was held. Statistical analysis of the data shows the percentage of how many people use the testing tools, but most still depends on manual testing. The main purpose of the article is to find out the facts related to the research questions of creation of new testing tools for educational purposes of highly qualified IT professionals.
  • Документ
    MODEL-ORIENTED METHOD OF DESIGN IMPLEMENTATION WHEN CREATING DIGITAL FILTERS
    (2017) V. Levinskyi, M. Levinskyi
    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.
  • Документ
    THE AUTOMATION SYSTEM OF ACCOUNTING SPORTING ACTIVITIES
    (2017) A. A. Shpinkovski, M. I. Shpinkovska, D. I. Korobova
    In recent years become a popular healthy lifestyle. Sport is an activity that serves the public interest by implementing educational, preparatory and communicative function, but not a constant specialty (profession) person. The development of current sports, requires resources that will not only automate the work of the organizers of the competition with the information, but also improve its effectiveness. One of the progressive sports at the moment is powerlifting (power triathlon). The proposed information system is an automated workplace of the organizer. During the implementation of the information system support sports competitions were performed system design using UML diagrams. It is possible to understand the tasks that must be done in the implementation of the program. The program is organized so that you can quickly and simply add all data about upcoming competitions: the name, location, date, the composition of the referee. After receiving information about the athletes, coaches, sports clubs, to make an application for participation in the competition. Also, the organizer has the ability to view statistics about the coaches, referees, participants, based on the information entered into the database earlier. A detailed user guide program. A functional testing and usability. Recommendations for further development of the software product.
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    КООРДИНИРУЮЩАЯ СИСТЕМА АВТОМАТИЧЕСКОГО УПРАВЛЕНИЯ ПРИВОДАМИ РОБОТА-МАНИПУЛЯТОРА
    (2017) А. А. Гурский, А. Е. Гончаренко, С. М. Дубна
    The control system providing the movement of the gripper of the robot manipulator along the predetermined trajectory is considered in this article. This control system is coordinated. The system provides a concerted change of the control variables under the dynamic modes. The review of modern achievements in corresponding field is presented. The purpose of scientific work is dynamic accuracy increase of the control system providing the movement of the gripper of the robot manipulator along the predetermined trajectory. The model of the control system providing the dynamic link of the control loops are presented in this paper. In this control system the dynamic link of the control loops is realized with the aid of the coordinating links. The designed model of the control system by drivers of the robot manipulator is required for methods of synthesis development of the coordinating complex systems. For comparative analysis we have presented the model of the program control system which has no dynamic link between the control loops. These models are realized in the MATLABSimulink program. The coordinating control law of the robot manipulator drives is shown in this paper. The simulation results of various control systems are presented. We have presented the schedules of transition process. They have shown the positional change of the robot gripper in time. On the basis of the simulation results we have confirmed the efficiency of the coordinating control system use for the control drivers of the robot manipulator during the rapid movement along the predetermined trajectory. We have confirmed that for improving the accuracy of the predetermined trajectory fulfillment is required to realize the parametric synthesis of control system considering the discrepancy ratio of the control variables minimization.
  • Документ
    ЛИНЕАРИЗАЦИЯ В ЗАДАЧЕ УПРАВЛЕНИЯ ХАРАКТЕРИСТИКОЙ ЦИФРОВОГО ФИЛЬТРА ДЛЯ СПЕЦИАЛИЗИРОВАННОЙ КОМПЬЮТЕРНОЙ СИСТЕМЫ
    (2017) А. В. Ухина, Т. П. Яценко, В. С. Ситников
    dependencies that could be used to obtain linear characteristic of frequency response control are defined. The possibility of such control is shown.
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    ФОРМАЛЬНІ МЕТОДИ ПОБУДОВИ ДІАГРАМ ЛОГІСТИЧНИХ БІЗНЕС-ПРОЦЕСІВ
    (2017) О. В. Мелентьєва
    This article considers the main methods of the description and creation of charts of business processes. The main methods are the notation of BPMN, languages of the description of BPEL and UML, methodologies of IDEF and ARIS. In article the main characteristic features inherent of methodologies of IDEF0 and IDEF3, the UML language have been in detail considered and analysed. The UML language is considered rather young therefore it is used more often. It is most often applied to modeling of object-oriented systems. On the example of application of creation of the chart of activities (actions) the UML language represents a wide choice of elements of the embodiment of idea. As the same process can be provided in various forms. IDEF respectively more mature methodology. IDEF methodology, unlike the UML language, is limited to such choice, it has accurately certain rules of representation of process. With the IDEF technology carry IDEF0 and IDEF3 and it methods are most applied. In this article are provided examples of application of the UML language and methodology of IDEF0. As an example has been provided a logistic supply chain of goods to the customer who has been ordered by means of online store. Thanks to graphical representation it is possible to draw a conclusion that it is more convenient to describe and create charts of processes on UML. Unlike IDEF0 the UML language possesses a big tool kit therefore also the chart looks more realistic.