No. 10

A new import-substituting thermoelectric explosion-proof converter ТПП 2101

The article reveals the complex process of developing a thermoelectric converter ТПП 2101. All the important stages of work on the project are listed: from receiving an application to experimental samples and launching a series.

The author pay special attention to the problem of import substitution and the possibility of replacing foreign SI with analogues of domestic production.

Keywords: thermoelectric converter, the standard, import substitution, ТПП 2101.

Design of information-measuring and control systems in the era of artificial intelligence

Information measuring and control systems are an integral part of automated systems used in many sectors of the economy. The rapid development of artificial intelligence technology based on neural networks leads to changes in the design and operation of such systems. The paper discusses the key points related to the usage of artificial intelligence in this area. The advantages and disadvantages are discussed.

Keywords: information-measuring and control systems, artificial intelligence, neural networks.

Experience in developing an automated decision support system based on expert knowledge

The article presents the experience of developing a distributed on-board intelligent decision support system for the crew (operator) for a highly maneuverable multifunctional aircraft based on expert knowledge. The development of the system was carried out within the framework of a cycle of scientific research carried out at JSC «Ramenskoye Design Company» on the basis of the artificial intelligence laboratory over the past 5 years. Based on the results of the work carried out, unified on-board components were developed that do not require changes when updating the decision-making logic, the database structure for this system was developed, knowledge presentation templates and examples of updated files based on these templates were developed. The developed system has been integrated into the onboard equipment of a highly maneuverable multifunctional aircraft and is currently undergoing ground and flight tests.

Keywords: aircraft, artificial intelligence, expert system, database, knowledge base, graph, data update.

Dynamic adjustment of an experimental interference installation based on the Jamin interferometer to control elementary displacements of the object surface

The paper considers the dynamic tuning of an experimental interference installation based on the Jamin interferometer to control elementary displacements of the object surface. The importance of interferometric methods is due to its capabilities such as the study of statistical and dynamic processes of wavefronts, conducting a comparative analysis of the wavefront profile at different points in time, obtaining quantitative and qualitative data about the object under study, as well as three-dimensional images of the object under study, therefore the work is relevant and promising. The paper sets the goal, the task of the study and defines the method and object of the study. A diagram of the interaction of light rays passing through the glass plates of the interferometer, as well as an optical scheme of an interference installation for monitoring elementary displacements, is presented. The dependences of the amplitude of the output signal on the angle between the glass plates and the calibration curves of the experimental interference setup for different plate thicknesses are obtained.

Keywords: optical methods, interferometry, plane-parallel plates, calibration curve, sensitivity, beam path difference, plate thicknes.

Synthesis and analysis of Doppler phase autocompensators of clutter

In the article discriminators by method of maximum likelihood are synthesized and principles of construction and structural schemes of auto-compensators Doppler phase clutter feedback are suggested. The analysis of auto-compensation accuracy is carried out depending on properties of clutter and parameters of auto-compensator’s nodes. Principles of construction and structural scheme of auto-compensator feedback, proposed on the basis of the synthesized discriminator, allow for a wide range of structures and parameters of their nodes depending on the requirements for the compensation accuracy, establishing the duration of the process and the complexity of the hardware implementation. Using simplified discriminator significantly reduces the accuracy of the compensation can be recommended for practical use.

Keywords: auto-compensators, discriminators, Doppler phase, training sample, clutter, compensation accuracy, stability.

Functional modeling of the monitoring process based on industrial internet of things technologies

Technologies for designing monitoring systems based on the industrial Internet of things are considered. The main emphasis is placed on the functional features of the approaches to creating industrial Internet of things systems based on cloud and edge computing and their differences.

Keywords: monitoring systems, industrial Internet of things, cloud computing, edge computing.

Physical and technological limitations in the production of quartz pendulums

Small-sized high-precision inertial sensors based on micromechanical sensing elements (CE) are widely used in rocket and space technology in control systems and autonomous navigation of launch vehicles, on orbiters, interplanetary and descent modules. In this regard, there is a need for mass production of electronic devices based on quartz pendulums on an elastic suspension. In this paper, the well-known technologies for the production of quartz pendulums, their disadvantages will be considered and the physical and technological limitations will be analyzed.

Keywords: quartz glass, quartz pendulum, processing technologies.

Normalization of measuring scales of CO-2 measures for ultrasonic testing according to GOST R 55724–2013

The relationship between the accuracy of drawing scale drawings on the measure CO-2 (ultrasonic sample) and the error in determining the input angle of an inclined piezoelectric transducer is considered. The dependence between the velocity of the transverse wave in the measure of CO-2 and the error of the input angle of the inclined piezoelectric transducer is established. The requirements for measuring scales of CO-2 measures are formulated, which reduce the error in measuring the input angle of an inclined piezoelectric transducer.

Keywords: input angle, exit point, wave velocity, measure, scale, ultrasonic.

Ultrasonic testing of workpieces made of composite materials

The paper presents the results of experimental studies on ultrasonic quality control of workpieces made of composite materials. The possibilities of ultrasonic testing tools for quality control of workpieces made of composite materials are presented. Informative parameters and control schemes were selected and the accuracy of the measurements was assessed. The directions of this research are formulated.

Keywords: non-destructive testing, defect, material characteristics, composite material, ultrasonic testing.