The paper discusses instruments designed for monitoring the parameters of X-ray emitters. The operating principle and metrological characteristics of the domestic monitoring device «Photon-1» are presented. The main functions of the «Сosmos» software are also specified.

Keywords: X-ray radiation, monitoring of X-ray apparatus parameters, radiation conditions.

This article presents the development and experimental study of a fiber-optic pressure sensor based on a modified conventional Bourdon tube pressure gauge. Two fiber Bragg gratings (FBGs) are attached to the surface of the Bourdon tube, enabling separation of pressure- and temperature-induced effects. The temperature sensitivity (~16.0 pm/°C) and strain sensitivity (38…40 pm/bar) were determined experimentally. The achieved pressure measurement error does not exceed 6 % of the full-scale range (10 bar). The sensor is immune to electromagnetic interference, explosion-safe, and suitable for remote monitoring in industrial applications.

Keywords: fiber Bragg grating, Bourdon tube, pressure sensor, temperature compensation, gauge modernization.

The paper considers the main types of non-destructive testing of technological equipment. Based on the method of comparative analysis – hierarchy analysis process, a technique for determing the optimal type of non-destructive testing and its algorithmic implementation is proposed.

Keywords: non-destructive testing, criterion, alternative, hierarchy analysis process, expert assessment, priority.

The limitations of existing methods of attribute-based search and manual grouping at the stage of technological preparation of instrument-making and machine-building small-batch productions with a wide range of manufactured products are considered. A methodology for searching analogous processes and grouping parts is proposed, which eliminates the human factor when forming a search query. The results of testing the methodology on a sample of 100 technological processes are presented; a reduction in time spent on the stage of searching for analogous parts by 71.6 % compared to the existing method of attribute-based search and a reduction in the time of part codification by at least 50 % have been established. The obtained results can be applied at instrument-making and machine-building enterprises of small-batch production to improve the efficiency and promptness of technological preparation of production, as well as serve as a basis for the formation of an intelligent decision support system in the design of technological processes.

Keywords: technological preparation of production, algorithms, methodology, analogous part, grouping, technological process, machine learning.

The article presents the development of a mathematical model of an educational and research stand for weather-dependent temperature control in the MATLAB Simulink environment. The model is based on the actual structure of the stand, which includes two temperature sensors, a ceramic heater and a brushless fan with adjustable speed, and describes the processes of heat exchange taking into account external weather conditions. The dynamics of the system is studied under various scenarios: low and high outdoor temperatures, changes in fan speed, as well as under the diurnal drift of external conditions. The model allows you to visually analyze the features of the weather-dependent control algorithm and can be used in the educational process to study the methods of mathematical modeling of automatic control systems.

Keywords: educational and research stand, weather-dependent temperature control, mathematical model, MATLAB Simulink, PID controller, automatic control system.

The paper investigates the possibility of optical reading of signals in a frame compensation microelectromechanical (MEM) angular velocity converter with piezobimorphic excitation. A compensation scheme for a frame-based MEM angular velocity converter with piezobimorphic excitation of primary oscillations and two-channel signal reading based on a Fabry-Perot interferometer (IFP) has been developed. The dependence of the output signal of the converter on the angular velocity is determined. An approach to improving the accuracy of a dual-channel interferometric micro-displacement readout unit through the use of a «coarse-grained» signal processing method is proposed, enabling a more than threefold increase in the readout unit's accuracy. The analysis of the influence of deviations of the parameters (reflectivity, angle of incidence of optical radiation, wavelength) on the characteristics of the MEM angular velocity converter is carried out.

Keywords: frame microelectromechanical converter, angular velocity, optical reading, reflectivity, compensation, piezobimorphic excitation, Fabry-Perot interferometer.

This paper proposes and experimentally validates a methodology for assessing the impact of context switching overhead on the performance of computing systems. A comparative analysis of x86-64, ARM and Elbrus architectures revealed differences in the nature of performance degradation under load, providing practical recommendations for system configuration optimization.

Keywords: computing system, processor architecture, performance analysis, Elbrus, e2k, VLIW.