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Загальна кількість знайдених документів : 5 Представлено документи з 1 до 5 |
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| 1. | 
Mikhailov P. Multifunctional fiber-optic sensors for space infrastructure [Електронний ресурс] / P. Mikhailov, Z. Ualiyev, A. Kabdoldina, N. Smailov, A. Khikmetov, F. Malikova // Eastern-european journal of enterprise technologies. - 2021. - № 5(5). - С. 80-89. - Режим доступу: http://nbuv.gov.ua/UJRN/Vejpte_2021_5(5)__10 Sensors used in rocket and space technology are subject to extreme external influences in terms of temperature, vibration, and shock. Therefore, the choice of the type of sensors is justified precisely by the resistance to such factors, as well as the ability to ensure the temporal and parametric stability of measurements. A new type of sensors - fiber-optic ones - meets these conditions. The basis for the selection and further improvement of such sensors were such requirements as minimum power consumption, high accuracy and stability of measurements, the ability to combine several measurements in one sensor. It is noted that for space infrastructure the factor of the possibility of simultaneous measurement of several parameters with one sensor is one of the important quality indicators. This is due to the possibility of reducing the number of sensors themselves, which reduces the mass and size parameters of space technology. This applies, first of all, to measurements of pressure and temperature, since they, in aggregate, account for at least 40 % of all measurements in space products. The path of choosing the types of methods and sensor designs led to the combination of the amplitude conversion method and optical communication in one sensor. In this case, amplitude modulation of pressure and temperature is carried out by a microelectromechanical unit (module), and the modulated optical signal is transmitted by an optical module. Such a modular composition of the sensor makes it possible to dispense with optical analyzers (interrogators) and carry out further processing based on standard interfaces. A limitation of the proposed methods and designs is the need for microelectromechanical structures that measure certain physical quantities. Such structures for fiber-optic sensors are not mass-produced; therefore, their manufacture can be established at instrument-making enterprises with microelectronic equipment. | ||
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Kabdoldina A. Development of the design and technology for manufacturing a combined fiber-optic sensor used for extreme operating conditions [Електронний ресурс] / A. Kabdoldina, Z. Ualiyev, N. Smailov, F. Malikova, K. Oralkanova, M. Baktybayev, D. Arinova, A. Khikmetov, A. Shaikulova, L. Bazarbay // Eastern-European journal of enterprise technologies. - 2022. - № 5(5). - С. 34-43. - Режим доступу: http://nbuv.gov.ua/UJRN/Vejpte_2022_5(5)__6 The objects of research are the designs and manufacturing technologies of a combined fiber-optic sensor. It is used in extreme operating conditions. The essence of the task is to study the constructive and technological compatibility of optical and micromechanical principles of simultaneous measurement of several heterogeneous physical quantities. In this regard, the chosen modular conversion principle solves the problem of combined conversion. The developed design and technology of the electro-adhesive connection make it possible to significantly reduce the internal mechanical stresses in the sensor and thereby increase the stability of the combined sensors in extreme operating conditions. Analytical models linking the magnitude and orientation of internal mechanical stresses with the characteristics of temporary stability for complex structures, as a rule, are absent. In practice, the obtained research results can be applied to combined pressure and temperature sensors, pressure and vibration, etc. | ||
| 3. |
Kabdoldina A. The use of technologies for stabilizing the electrophysical characteristics of sensor structures used in the development and manufacture of measuring transducers [Електронний ресурс] / A. Kabdoldina, Z. Ualiyev, S. Ibrayev, N. Jamalov, A. Ibrayeva, Y. Tuleshov, A. Analiyeva, D. Arinova, A. Khikmetov, B. Uaissov // Eastern-European journal of enterprise technologies. - 2023. - № 1(5). - С. 6–16. - Режим доступу: http://nbuv.gov.ua/UJRN/Vejpte_2023_1(5)__3 The object of the study is the design, manufacturing technology and methods of stabilizing the electrophysical characteristics of measuring transducers. The problem solved in the research is the creation of methods and design and technological solutions to ensure stability used in the development and manufacture of measuring transducers. As a result of the conducted research, designs and technologies for manufacturing and stabilizing the electrophysical characteristics of measuring transducers were developed. The features of the developed designs of measuring transducers are increased in comparison with the known time stability with a basic error of no more than 0,1 %/year. Technologies for stabilizing the parameters of measuring transducers, in contrast to the known ones, differ in their versatility, since most elastic elements that perceive mechanical magnitude are membranes and beams, on which thermocompensating films are easily applied. The stabilization of the parameters of the entire measuring transducer, unlike the known ones, is carried out after the removal of internal mechanical stresses of each element and part of the measuring transducer through the integrated use of current and vibration dynamic loads. Thus, the use of complex compensation due to the application of a new method of compensation of internal mechanical stresses in the structure, based on the use of multilayer film compositions formed on sensitive elements, followed by thermal and vibration stabilization of measuring transducers. In addition, reducing the measurement error and increasing the time and parametric stability of the measuring transducers is achieved through the use of specialized heat treatment modes, training resonant vibration and current loads. When developing structures and stabilization methods, previously developed engineering mathematical models were used, including constructive, informational, dimensional, technological and circuit engineering. At the same time, depending on the adopted design and the technology used, engineering models were modified by including known coefficients and dependencies. This method has significantly reduced the cost and complexity of development. | ||
| 4. |
Abdykadyrov A. Optimization of distributed acoustic sensors based on fiber optic technologies [Електронний ресурс] / A. Abdykadyrov, N. Smailov, A. Sabibolda, G. Tolen, Z. Dosbayev, Z. Ualiyev, R. Kadyrova // Eastern-European journal of enterprise technologies. - 2024. - № 5(5). - С. 50–59. - Режим доступу: http://nbuv.gov.ua/UJRN/Vejpte_2024_5(5)__7 | ||
| 5. |
Smailov N. Improving accuracy of the spectral-correlation direction finding and delay estimation using machine learning [Електронний ресурс] / N. Smailov, V. Tsyporenko, Z. Ualiyev, A. Issova, Z. Dosbayev, Y. Tashtay, M. Zhekambayeva, T. Alimbekov, R. Kadyrova, A. Sabibolda // Eastern-European journal of enterprise technologies. - 2025. - № 2(5). - С. 15–24. - Режим доступу: http://nbuv.gov.ua/UJRN/Vejpte_2025_2(5)__4 | ||
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