Техніка та енергетика / Machinery & Energetics

Постійне посилання колекціїhttps://dglib.nubip.edu.ua/handle/123456789/8030

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Accuracy of converting videoendoscopy combine harvester using generalized mathematical model
(ВЦ НУБіП України, 2018) Grubrin, O.M.; Rogovskii, I.L.
The article considers analytical models of the formation procedures for the use of video endoscopy in the assessment of indicators of a technical condition of units and mechanisms of combine harvesters. Developed electronic module for video endoscopy in the 2-s readout of the transducer. As a converter to test the correction unit was used that was developed 13-bit fiber-optic converter of the angle. Experimental studies on the installation and podtverdili that before correction instrumental error exceeding 1/4 of a quantum of high order, equal 0,703125°, and accounted for 1,266° of 1.31°. In the result of the algorithm execution code correction was able to reduce the instrumental error to 0,0089 (1.3% from 1/4 of a quantum of high order), which led to regular operation of the scheme of video endoscopy approval of samples and the formation of true sequence. The results of the processing array of the errors obtained before and after correction
Analysis of statistical assessment of domestic factors of environment by students in period of growth of emergency situation of socio-political character
(ВЦ НУБіП України, 2018) Piskunova, L.E.; Zubok, T.O.; Sukhomlin, Yu.V.
To identify transformation of values and prioritization of young people, social survey was conducted by questioning students of various faculties of National University of Life and Environmental Sciences of Ukraine. With help of statistical assessment, the damaging factors of the environment were determined during a period of growing social and political emergencies. The influence of prolonged action of dangerous and harmful factors on human life is considered. The distribution of the orientation of values of modern Ukrainian youth relative to the priority of various types of factors in the distribution of points relative to the statistical assessment of dangerous and harmful factors for human life is investigated. Grades given by students have been processed and thus deduced into an average assessment of certain factor. Also, the relative share for each harmful and dangerous factor in total number of others is calculated. A separate unit explored the "Loss of health in hazardous production" factor, which made it possible to identify certain changes in distribution of priority regarding production hazards through years. The attitude to harmful and dangerous factors is analyzed, depending on place of residence, gender and direction of students' preparation. The advantage in giving points to individual factors among groups of students from different faculties has been revealed and patterns of selection of highest and lowest ratings for certain factors have been traced.
Analysis of technological process efficiency of sugar beet cultivation based on simulation method
(НУБіП України, 2018) Volokha, M. P.
The paper considers the technological process of sugar beets cultivation as a single object of modeling. The aim is to investigate the interrelation of separate technological operations and evaluate the technological efficiency of the beet cultivation. The study of technological processes based on the simulation allows us to investigate interconnections, to highlight technical and economic indicators, to evaluate the impact on profitability, to determine the directions of development and ways to improve the technical and technological basis of the beet production industry.
Basic methodological requirements to test set of machines for poultry
(ВЦ НУБіП України, 2018) Rebenko, V.I.; Rogovskii, I.L.
The article summarizes the existing domestic, European and North American methodological requirements to test set of machines for poultry. Characterized that the method of comparing the values of indicators in the subject of complex regulatory requirements and with relevant indicators for complex analog. It is also established that the results of mathematical processing of measurement data used for comparison with the required values of technical specifications with the state acceptance tests (technical terms, if state periodic testing) for a decision on the conformity of the test complex technical requirements to technical specifications). There are two possible cases. Also, for comparison of parameters obtained in the prototype testing of complex equipment and complex analog calculate the significance of differences in means. Recommendations from the results of testing complex take on the basis of results of comparison of values of indicators of the test of complex equipment technical requirements for supply, zootechnical requirements and values for complex analog.
Decision constructive-technically tasks in conditions of deformation of tasks maintenance
(ВЦ НУБіП України, 2018) Berezova, L.V.
Tasks, questions and practical tasks is an effective didactic way, which makes active creative activity of the person. The constructive thinking carried out at the decision of creative tasks is considered. Analyses of creative technical thinking development and the peculiarities of the constructive-technical tasks solving are given. The creative thinking is a search and opening something new, for creative work, it is necessary to own ability independently and critically to think. On the basis of the main ways, methods of the solution strategy of the task solution is formed. Transformation of the solution strategy of the constructive-technical tasks with use of complications is considered. In the paper the application of methods of information insufficiency and prohibition. at the decision by students of constructive-technical tasks are considered. These methods stir up the cogitative activity of students, assists to enlarge the forms of necessary structurally functional groups searching, assists of construction of optimal variants of the solution of tasks.
Decision constructive-technically tasks in conditions of deformation of tasks maintenance
(НУБіП України, 2018) Berezova, L.V.
Tasks, questions and practical tasks is an effective didactic way, which makes active creative activity of the person. The constructive thinking carried out at the decision of creative tasks is considered. Analyses of creative technical thinking development and the peculiarities of the constructive-technical tasks solving are given. The creative thinking is a search and opening something new, for creative work, it is necessary to own ability independently and critically to think. On the basis of the main ways, methods of the solution strategy of the task solution is formed. Transformation of the solution strategy of the constructive-technical tasks with use of complications is considered.
Economic-mathematical model of optimization of expenses investment-building project payment automobile
(ВЦ НУБіП України, 2018) Zagursky, O.М.; Kukanov, V.V.
The multivariance of the methods of developing investment and construction projects leads to the need to analyze existing and construct new economic and mathematical models that take into account the likelihood of the implementation of certain options, and also take into account the conditions of uncertainty and risk. In the field of motor transport infrastructure, investment and construction projects are always large-scale and costly, because their implementation affects different components of socio-economic development of territories. Investment-building projects of toll roads, in general, are difficulty managed systems that change their configuration in the course of multi-step processes. The ability to manage such a system causes the problem of choosing one or another action and inevitably leads to the task of finding the optimal solution in terms of management. In the article an algorithm of the economic-mathematical model of optimization of expenses of investment-construction project of a paid motorway in the conditions of uncertainty and risk is developed. The description of the system's work is based on the "Markovian" decision-making processes, and optimization of expenses was carried out by methods of discrete and dynamic programming, in accordance with the general concept of analysis and optimization of multi-step tasks. The proposed model can be a tool in the operational management of the process of developing an investment and construction project, on the basis of which will be further developed the schedules and calendar plan for its implementation.
Economic-mathematical model of optimization of expenses investment-building project payment automobile roads
(НУБіП України, 2018) Zagursky, O.М.; Kukanov, V.V.
The multivariance of the methods of developing investment and construction projects leads to the need to analyze existing and construct new economic and mathematical models that take into account the likelihood of the implementation of certain options, and also take into account the conditions of uncertainty and risk. In the field of motor transport infrastructure, investment and construction projects are always largescale and costly, because their implementation affects different components of socio-economic development of territories. Investment-building projects of toll roads, in general, are difficulty managed systems that change their configuration in the course of multi-step processes. The ability to manage such a system causes the problem of choosing one or another action and inevitably leads to the task of finding the optimal solution in terms of management.
Establishment structural-technological scheme of collector of milking machine
(ВЦ НУБіП України, 2018) Medvedsky, О.V.; Achkevych, O.M.; Ackevych, V.I.
The design and technological scheme of the two-chamber milking machine collector with a portion air intake, which provides improved transportation of the milk mixture, has been develops. The influence of changes in the volume of the collector's milk chamber and the intensity of milk transfer on the pressure in the rate of sucking is studied. The conditions for improving the transportation of milk to the main milk pipeline with a milk hose from the milking machine collector are substantiate. The influence of the diameter of the throttle hole on the production of a given air flow in the section of the milk chamber of the collector to create the necessary pressure gradient is established.
Experimental studies method of controlled gravitational leakage of grain materials from physical model of dump hopper
(ВЦ НУБіП України, 2018) Shymko, L.S.
In the article, for the purpose substantiate the parameters and operating modes of the harvester`s unloading devices, the method of experimental studies of controlled gravitational leakage from the dump hopper and its physical model is proposed. The peculiarity of the program for the study of free-flowing material`s leakage involves three stages, which include a joint common goal, individual experiments, the execution of which ensures the verification and, if necessary, the correction of the theoretical provisions, considerations and conclusions on improving the efficiency of the production process of harvesting grain crops. The research consisted of: the original experiment (the establishment of mechanical and technological properties of the working grain material of the main crops); modelling (construction and verification of the dump hopper`s physical model); the main experiment (studying the movement of grain from the dump hopper).
Experimental studies method of controlled gravitational leakage of grain materials from physical model of dump hopper
(НУБіП України, 2018) Shymko, L.S.
In the article, for the purpose substantiate the parameters and operating modes of the harvester`s unloading devices, the method of experimental studies of controlled gravitational leakage from the dump hopper and its physical model is proposed. The peculiarity of the program for the study of free-flowing material`s leakage involves three stages, which include a joint common goal, individual experiments, the execution of which ensures the verification and, if necessary, the correction of the theoretical provisions, considerations and conclusions on improving the efficiency of the production process of harvesting grain crops. The research consisted of: the original experiment (the establishment of mechanical and technological properties of the working grain material of the main crops); modelling (construction and verification of the dump hopper`s physical model); the main experiment (studying the movement of grain from the dump hopper).
Method of designing a resource-effective control system for vegetable growing modes in greenhouses
(ВЦ НУБіП України, 2018) Dudnyk, A.
Greenhouse complexes are characterized by the presence of significant energy streams used to provide technology for cultivation. High energy prices create conditions for the development of special systems that are able to reduce, but better to minimize energy costs. Worthy of note are resource-efficient algorithms for energy flows control throughout the growing season. The results of previous studies have allowed us to conclude that additional information on the predicted values of ambient temperature, solar radiation, information of biological filling states allows us to create a knowledge base and use it for the formation of control impacts on biotechnical objects in order to minimize energy consumption while ensuring production with the required quality and volumes. The solution of these problems is possible through the use of modern intelligent algorithms for processing information coming from the control object, and the use of results for the formation of appropriate control strategies in order to maximize the production profits . The proposed system with the use of intelligent information technologies and software based on the predicted values of external natural disturbances and the current parameters of the technological process will provide the decision making support, monitoring the biotechnical object parameters. Therefore, it is important to use resource-efficient algorithms for: forecasting of natural perturbations and formation of high reliability of optimum regimes of growing of vegetable products taking into account the states of the biological component of the control and pricing policy in the market of commodity products.
Methods of rationalization of energy resources during work with operating system
(ВЦ НУБіП України, 2018) Golopura, S.M.; Sinenko, B.V.
In our time, computer systems have become an integral part of any highly skilled workflow. They spend kilowatt of electricity on millions of mathematical operations, which, in turn, determine the software functionality and are responsible for the result of any work. The article considers the numerical efficiency and expediency of using the economical operating mode of the "Windows 7 Unlimited" operating system of 64-bit type. Numerical data, on the basis of which the coefficients given in the work were calculated, were obtained with the help of the energy efficiency monitoring software Joulemeter 1.2 (licensed product of the Microsoft software laboratory). The main task of the work is to bring exact percentages of savings on the example of a particular computer and the work package of office software programs Microsoft Office 2010, which includes programs: Microsoft Word, Microsoft Excel and Microsoft PowerPoint – and browsers Google Chrome and Internet Explorer with different performance. Based on the results of the experiment, the energy efficiency of the system, when using the economic mode was higher by 0.7% than when using a balanced one. And the maximum energy efficiency of 3.7% was achieved by using the energy-saving Internet Explorer browser instead of Google Chrome.
Methods of rationalization of energy resources during work with operating system
(НУБіП України, 2018) Golopura, S.M.; Sinenko, B.V.
In our time, computer systems have become an integral part of any highly skilled workflow. They spend kilowatt of electricity on millions of mathematical operations, which, in turn, determine the software functionality and are responsible for the result of any work. The article considers the numerical efficiency and expediency of using the economical operating mode of the "Windows 7 Unlimited" operating system of 64-bit type. Numerical data, on the basis of which the coefficients given in the work were calculated, were obtained with the help of the energy efficiency monitoring software Joulemeter 1.2 (licensed product of the Microsoft software laboratory). The main task of the work is to bring exact percentages of savings on the example of a particular computer and the work package of office software programs Microsoft Office 2010, which includes programs: Microsoft Word, Microsoft Excel and Microsoft PowerPoint – and browsers Google Chrome and Internet Explorer with different performance.
Optimization the start-up mode of bucket elevator by criterion of mean rate of change efforts in traction body during clash on drive drum
(ВЦ НУБіП України, 2018) Loveykin, V.S.; Loveykin, J.V.; Tkachuk, L.B.
The oscillations of the structural elements, the drive mechanism and the traction body are minimized by optimizing the movement modes of the grain elevator during transient processes, which made it possible to increase its efficiency. Based on the chosen dynamic model, a mathematical model was created using the d'Alamber’s principle. The optimization process of the start-up mode of the bucket elevator was considered by the criterion of mean rate of change efforts in the traction body during clash on the drive drum. Found laws of motion for working branch, the tensioning drum and the drive drum which correspond to the optimal mode of movement of the bucket elevator. Based on the discovered laws of motion were built kinematical characteristics of the main parts of the elevator which are presented in the form of graphical dependencies for the optimal motion mode. The graphical dependencies of the effort changes in the traction body during clash on the drive drum and shrinkage from the tensioning drum also received. Based on the graphical dependencies established that during start-up bucket elevator at the optimal mode of motion there are small oscillating processes that are the smallest just in the optimization by the criterion of mean rate of change efforts in the traction body during clash on the drive drum.
Optimization the start-up mode of bucket elevator by criterion of mean rate of change efforts in traction body during clash on drive drum
(НУБіП України, 2018) Loveykin, V.S.; Loveykin, J. V.; Tkachuk, L.B.
The oscillations of the structural elements, the drive mechanism and the traction body are minimized by optimizing the movement modes of the grain elevator during transient processes, which made it possible to increase its efficiency. Based on the chosen dynamic model, a mathematical model was created using the d'Alamber’s principle. The optimization process of the start-up mode of the bucket elevator was considered by the criterion of mean rate of change efforts in the traction body during clash on the drive drum. Found laws of motion for working branch, the tensioning drum and the drive drum which correspond to the optimal mode of movement of the bucket elevator.
Physical and chemical parameters of chops model compositions with using of flax seed
(ВЦ НУБіП України, 2018) Veretynska, I.A.; Sukhenko, Yu.G.; Slobodyanyuk, N.M.
Physical and chemical parameters of chops model compositions using flax seeds was studied. Found that using of flax seeds in the chops model compositions in the amount of 5% promotes the water-retaining capacity, therefore, the texture and richness of products are improved.
Physical and chemical parameters of chops model compositions with using of flax seed
(НУБіП України, 2018) Veretynska, I.A.; Sukhenko, Yu.G.; Slobodyanyuk, N.M.
Physical and chemical parameters of chops model compositions using flax seeds was studied. Found that using of flax seeds in the chops model compositions in the amount of 5% promotes the waterretaining capacity, therefore, the texture and richness of products are improved.
Realization of optimum mode of movement of roller forming installation on acceleration of fourth order
(ВЦ НУБіП України, 2018) Loveykin, V.S.; Pochka, K.I.
For the purpose of increase in reliability and durability of roller forming installation the optimum mode of back and forth motion of the forming cart on acceleration of the fourth order is calculated. Kinematic characteristics of the forming cart at the optimum mode of the movement on acceleration of the fourth order are calculated. The design of roller forming installation with the drive from the high-moment step engine which is built in the rolling rollers of the forming cart is offered and provides the optimum mode of back and forth motion of the forming cart on acceleration of the fourth order. Use in installation of the specified driving mechanism leads to improvement of quality of a surface to the processed concrete mix, reduction of dynamic loadings in elements of the driving mechanism, to disappearance of excess destructive loads of a frame design and, respectively, to increase in reliability and durability of installation in general.
Realization of optimum mode of movement of roller forming installation on acceleration of fourth order
(НУБіП України, 2018) Loveykin, V.S.; Pochka, K.I.
For the purpose of increase in reliability and durability of roller forming installation the optimum mode of back and forth motion of the forming cart on acceleration of the fourth order is calculated. Kinematic characteristics of the forming cart at the optimum mode of the movement on acceleration of the fourth order are calculated. The design of roller forming installation with the drive from the high-moment step engine which is built in the rolling rollers of the forming cart is offered and provides the optimum mode of back and forth motion of the forming cart on acceleration of the fourth order. Use in installation of the specified driving mechanism leads to improvement of quality of a surface to the processed concrete mix, reduction of dynamic loadings in elements of the driving mechanism, to disappearance of excess destructive loads of a frame design and, respectively, to increase in reliability and durability of installation in general.