Conference Technology Transfer: fundamental and innovative technical solutions
Not a member yet
111 research outputs found
Sort by
DETERMINATION OF THE GEOMETRIC SIZE OF THE COMMUNICATION HOLE OF TWO CYLINDRICAL WAVEGUIDES
Get PDFIt is always relevant to improve performance in electrodynamic systems. When solving problems on the electrodynamic characteristics of hollow coupled systems, the question is often asked about the relationship between them, about the form of the communication hole with a certain orientation of the guide axes in the system elements and its geometric dimensions. Such a system is a generator (small-sized local oscillator8 mmrange). The inclusion of a high-Q stabilizing resonator in the Gunn diode generator significantly improves its characteristics.
The use of a low-quality coaxial chamber as a diode section increases the generation stability. However, this complicates the numerical calculations of the electrodynamic system of the generator due to the uncertain configuration of the communication hole, since it arises as a result of the intersection of two cylindrical volumes of a coaxial waveguide and a high-quality cylindrical resonator.
In the present work, the task is determination of the shape and size of the intersection figure of two unequal radii of cylindrical volumes with axes orthogonally located in relation to each other at a distance.
The resulting shape of the intersection figure in a planar approximation forms a flat ellipse. The larger diameter of the coupling ellipse depends on the diameter of the resonator, the smaller on the inner diameter of the coaxial chamber, depending on the distance between their axes.
It is necessary to determine the equivalent rectangular hole of the connection. Its presence simplifies the construction of a tangent electric field at the communication hole, which is necessary for numerical calculations of the electrodynamic characteristics of the system.
In this case, with constant diameters of the cylindrical resonators, the geometrical dimensions of the hole depend only on the distance between the axes.
It is with this circumstance that they are dealing with the study of the connection between a cylindrical coaxial diode section and a high-Q stabilizing resonator. Unlike other circuits, where the diode is included in the waveguide section, in this case, its inclusion is made in a coaxial line
THE CURRENT STATUS OF THE E-GOVERNMENT PROJECT IN JORDAN AND ITS BENEFITS AND ADVANTAGES
Get PDFToday, it is expected that governments will respond to public needs, manage public funds efficiently and transparently, and adapt to social changes. In this transitional process, public administration gains inspiration from private companies, goal-driven management, and custom. At the same time, the resistance to such a large organizational change is enormous. The huge size of the government makes it slow to change, especially when the implementation of e-government is only one of the many challenges that the government must deal with e-oriented policies. The quest to implement e-government projects is motivated by the fundamental policy goals of (i) increased effectiveness, efficiency, and information quality; and (ii) improved interaction mechanisms, and in turn better governance tools. In Jordan, e-services initiative is the heart of the e-government. Therefore, the ICT sector is best served and is able to deliver e-government services in an integrated manner, as a result since 2000, many national ICT projects have been launched to sustain and support the e-government program
RESEARCH OF TRANSIENT RESPONSES IN AUTOMATIC MOBILE CONTROL SYSTEMS OF DISTILLATION PROCESS
Get PDFIn modern conditions of growth of informatization, to ensure the reliability of the functioning of distributed computer information-diagnostic and control systems, which are mandatory for consideration, there are problems of assessing security and implementing protection of operational information.
The state of information protection and the reliability of computer systems for corporate monitoring and diagnosis of the railway power supply system are analyzed. The main tasks in the intellectualization of component systems are defined, namely traction electric network. The principles of information protection are proposed, which include: active protection of information; convincing protection of information, consisting in the justification of the design and measures to protect the conditions and circumstances. Such a principle as the continuity of the information protection process provides for the organization of the protection of objects at all stages of the development and operation life cycle. A variety of information protection tools provides for the exclusion of patterns at the stage of selecting cover objects and various ways to implement protection, not excluding the use of standard solutions.
The combination of the above principles in the work is called an integrated approach to information security, which is the basis for the creation of computer information protection systems. According to the sphere of information security, this approach complies with international ISO standards, and for the technical protection of information and state standards it complies with the requirements of existing national legislative and regulatory documents.
To ensure the security of information stored and processed in computer systems, the coordinated application of various security measures is necessary
DESIGN OF DETECTOR OF INTERNAL COMBUSTION ENGINE’S CRANKSHAFT TORSIONAL VIBRATIONS BASED ON ACCELEROMETER METHOD
Get PDFDetector of internal combustion engine’s crankshaft torsional vibrations based on accelerometer method is designed. It consists of a measuring and transmitting part, which is mounted on the crankshaft of a diesel engine or the propeller shaft of a vessel and a receiving and recording part placed remotely. The measuring and transmitting parts of detector is easily mounted on area of the shaft of the vessel important for the measurement, which are difficult to access for other methods of vibration measuring. It allows directly in real time to measure the tangential accelerations of the shaft without interfering in the propulsion unit work.
Carrying out such measurements allows to control the arising torsional stresses and signalling the excess of their safety limit.
The measurement results of engine's pulsations of rotation of the crankshaft, arising during operation, allow to watchkeeping engineer to analyze the quality of the working process of each engine’s cylinder in real time and at different operating modes of the vessel. This analysis makes it possible to assess the technical condition of the engine’s parts and assemblies (cylinder liner, piston, o-rings), the quality of the fuel equipment of the diesel engine and, in general, allows to control the technical condition of the entire engine
RESEARCH OF PROPERTIES OF THE METAL OF THE HEAT-AFFECTED ZONE FOR SURFACING BY STAPE ELECTRODE WITH THE CONTROLLED TRANSFER OF THE ELECTRODE METAL
Get PDFThe quality of the deposited layer is determined by the conditions of its formation, as well as the properties of local zones, due to the parameters of the thermal cycle of surfacing (mechanical, microstructural, chemical, etc.). When surfacing the austenitic layer on pearlitic steels, the properties of the heat-affected zone, along with the resistance of the surface layer to corrosion, largely determine the performance and durability of the deposited product. To reduce the amount of heat input and effectively control the structure and properties of the heat-affected zone when restoring working surfaces by submerged arc surfacing, a method for surfacing with a tape electrode with controlled mechanical transfer of electrode metal is proposed.
Studies have shown that the imposition of longitudinal sinusoidal vibrations on the end of the tape electrode can reduce the level of heat input in the heat-affected zone by increasing the efficiency of fusion of the base metal. At the investigated frequency of 50 Hz, the duration of the dots on the boundary of the fusion line and below it in the range 900 ... .1100 °С is less than when surfacing without controlled mechanical transfer. Reducing heat input into the heat-affected zone in the temperature range 900 ... 1100 °С provides a finer-grained structure.
The use of forced vibrations of the end of the tape when surfacing a high-alloy austenitic layer on low-carbon steel makes it possible to obtain a finer-grained structure at the fusion boundary in the heat-affected zone. This will increase the resistance of the heat-affected zone to the formation of defects associated with a decrease in its mechanical properties
THE INFLUENCE OF THE GAPS IN THE MECHANICAL TRANSMISSION OF THE REDUCER OF THE SWITCH ELECTRIC DRIVE
Get PDFSwitch electric drives are one of the most important and responsible components of railway automation, and therefore require the development and implementation of advanced diagnostic systems. Achievement of the goal is possible only through the use of modern mathematical and software tools. There is a problem in the use of electric motors for switch electric drives today. The point is that the nature of the load on the engine is determined by the reducer. Deterioration appears on the reducer during operation. The appearance of gaps between the gears causes the instability of the load on the shaft. Measurements and control of the size of the gaps is not performed. To solve this problem, it is proposed to use linear measurement of the gaps of the gears and further modelling of the reducer. This method will allow to determine the arising load fluctuations by the deviation of the angular velocities of rotation of the drive and driven shafts. The effect of the gaps on the system operation is shown by model in the form of transfer functions of the constituent elements and the system of equations. It will be possible to set limit values for the deterioration of the gears of the reducer by the determination the maximum deviation of shafts angular speeds of rotation in order to take measures in advance for their timely replacement and to keep the engines from excessive load
RESEARCH OF ACOUSTIC MEASUREMENTS OF BENDING FORCE ON HIGH VOLTAGE INSULATORS
Get PDFThe aim of this research was to research and verify the possibilities of using microphone to determine mechanical load acting on high voltage insulator. The insulator features a cable hole, which can be used for optical cables. Let’s use this hole as a microphone mount in order to listen to sounds inside of an insulator. The cable hole and the insulator end holes were filled with insulating foam to insulate microphone from the external interferences. Acoustic measurements were performed on the outdoor post insulator C30-850-II. The insulator was placed in bending machine and was repeatedly mechanically stressed by bending forces. The results of this research verify the suitability of the selected method for future use in the proposed device for detection of mechanical overload of high-voltage insulators
RESEARCH OF INFORMATION PROTECTION METHODS IN COMPUTER SYSTEMS FOR MONITORING AND DIAGNOSTICS OF ELECTRIC SUPPLY OF RAILWAYS
Get PDFIn modern conditions of growth of informatization, to ensure the reliability of the functioning of distributed computer information-diagnostic and control systems, which are mandatory for consideration, there are problems of assessing security and implementing protection of operational information.
The state of information protection and the reliability of computer systems for corporate monitoring and diagnosis of the railway power supply system are analyzed. The main tasks in the intellectualization of component systems are defined, namely traction electric network. The principles of information protection are proposed, which include: active protection of information; convincing protection of information, consisting in the justification of the design and measures to protect the conditions and circumstances. Such a principle as the continuity of the information protection process provides for the organization of the protection of objects at all stages of the development and operation life cycle. A variety of information protection tools provides for the exclusion of patterns at the stage of selecting cover objects and various ways to implement protection, not excluding the use of standard solutions.
The combination of the above principles in the work is called an integrated approach to information security, which is the basis for the creation of computer information protection systems. According to the sphere of information security, this approach complies with international ISO standards, and for the technical protection of information and state standards it complies with the requirements of existing national legislative and regulatory documents.
To ensure the security of information stored and processed in computer systems, the coordinated application of various security measures is necessary
THE INFLUENCE OF TECHNOLOGICAL FACTORS ON THE PROPERTIES OF BASALT FIBER WHEN USED IN THE MANUFACTURE OF FLEXIBLE HEAT AND SOUND INSULATING PRODUCTS
Get PDFAnalysis of energy efficiency and operational safety of technological equipment of industrial enterprises, engineering networks, buildings and structures, building structures in many sectors of the economy, including the housing and industrial sectors, causes interest in the use of high-tech, environmentally friendly heat and sound insulation materials with enhanced performance properties. One of the relevant representatives of these materials is basalt fibers and their use as raw materials in the production of flexible heat and sound insulating products.
It is known that the chemical composition of the initial melt equally affects the physicochemical and mechanical properties of basalt fibers. The main influence factors, including the chemical composition, are the thermal past of the melt, the method for producing basalt fiber and the conditions for the formation of its structure. These factors determine the structural characteristics of the fiber and, as a consequence, its physicochemical characteristics. The degree of fiber strength is directly determined by its chemical composition and production method. The greatest strength of the fiber is obtained by ensuring the perfect fiber structure in the absence of ruptures of siliceous chains
CHEMICAL MEASUREMENTS BY ELECTRICAL PARAMETERS TO CONTROL THE COMPOSITION OF MULTICOMPONENT LIQUIDS
Get PDFThe authors substantiated the relevance of scientific studies of the electrical properties of multicomponent liquids. Such liquids are real objects that require stock control during operation. This applies to many areas of human activity: environmental monitoring, the chemical and food industries, medicine, and the like. Laboratory methods are unable to meet the following requirements.
The electrical properties of substances, including liquids, have been well studied by scientists. In addition, the high level of modern experimental technology allows to combine theoretical and practical achievements, in this case chemical and physical-electrical sciences.
In the theoretical provisions regarding the electrical methods for the study of the composition of liquids, the authors, based on the classical knowledge of dielectric conductivity physics, argue for their use for applied chemical measurements. After all, physico-chemical electrical measurements have long been used for the study of two-component standard solutions. The authors propose to improve such measurements and use them for multicomponent liquids. At the same time, it is proposed to use the developed primary converters and a new informative parameter - complex conductivity components (admittance).
On the basis of the obtained experimental results, the research conditions are formulated. The measuring system consists of a primary capacitive transducer (carbon electrodes in vessels with the test liquid); multi-frequency current generator (RLC meter) and computer.
The dependences of the values of the complex components of conductivity on the frequency of the electromagnetic field between the electrodes for liquids with dissolved substances of different chemical nature and concentrations were investigated. Some individual properties have been established for such substances, which allow to develop methods and methods of operational control of the composition of multicomponent liquids by electrical parameters.
The article discusses the scientific and practical results of research and the advantages of the developed methods and methods of composition control for real liquids. Also, some of the scientific facts obtained allow to further develop and develop methods of electro-chemical research with a wider range of constituents, for low concentrations and without complex laboratory manipulations