No. 9

Single-axis dual spherical electric field strength sensor with biangular sensing elements

The article proposes a design solution for a dual spherical electric field strength sensor with biangular sensitive elements. It is shown that with angular dimensions θ₀₁ = 30° and φ₀₁ = 90° sensitive elements, the sensor error from electric field inhomogeneity will not exceed δ(a) ≤ | ± 0,36| % in the permissible 0 ≤ a) ≤ 0,5 spatial measurement range.

Keywords: dual spherical sensor, sensitive element, spherical double-angle, electric field, field strength, error from field inhomogeneity, distance to the field source.

Modeling the motion control channel of a multi-wheel mobile robot platform

The article is devoted to the construction of a multi-connected dynamic model of the motion control channel of a six-wheeled mobile robot platform. The main advantages of the six-wheel scheme are given, which make it effective and versatile in various situations. A mathematical description of the dynamics of power converters of electrical energy and differential drive, dynamics and kinematics of the six-wheeled robot platform is given, taking into account the accepted assumptions. Numerical (computer) modeling of the control channel was carried out using the MATLAB software package. The resulting model can be used to synthesize a multi-connected motion control system for a multi-wheeled mobile robot platform.

Keywords: mobile robot, six-wheeled platform, differential drive, voltage converter, equations of motion, dynamic model, numerical simulation.

Automatic generation of control programs of the IEC 61131-3 standard for sensors of the industrial Internet of Things

Currently, the problem of integrating operational and information technology solutions in the field of sensors of the industrial Internet of Things and devices of this kind is urgent. The problem of facilitated interaction between the IEC 61131-3 programming languages and classical programming tools (C#, Python, etc.) is one of the most important at the moment.

This article proposes a conceptual approach to reducing time and labor costs in the development and compilation of control programs for real-time operating systems based on the IEC 61131-3 standard for RP2040 family microcontrollers.

Keywords: programmable logic controller, IEC 61131-3, code generation, Industrial Internet of Things.

Kolmogorov-Arnold neural network as a digital twin for a quasi-optimal information control system for a technical object

This article discusses the use of the Kolmogorov-Arnold neural network for a quasi-optimal information control system as a digital twin of a technical object. The network is used to solve the problem of predicting the main parameter of the state of a technical object instead of using an ensemble of two neural networks. As an example, a change in the angle of inclination of the trajectory is predicted for a mathematical model of the longitudinal motion of an unmanned aerial vehicle of an airplane type of a normal aerodynamic scheme.

Keywords: Kolmogorov-Arnold neural network, perceptron, control system, digital twin.

Optimization of the photodetector part of the interference installation by parallel processing of optical signals

The paper optimizes the photodetector part of the interference installation by parallel processing of optical signals. The relevance of the work lies in the fact that interference devices and systems built according to the Michelson scheme using radiation sources of limited coherence have high sensitivity, accuracy and a relatively large measurement range. The paper sets the goal, the task of the study and defines the method and object of the study. A functional diagram of the implementation of the method of parallel processing of an optical signal in an interference installation is presented. The optimal number of photodetector elements has been determined, which is confirmed by the dependence of the standard deviation of the measurements of the distance to the object on the number of photodetector elements. The change in the dynamic range of the interference signal while maintaining its average value in the method of parallel processing of optical signals is considered.

Keywords: interference installation, diffuse surface, aperture angle, photodetector element, threshold signal level, photodiode, measurement error.

Assessment of the degree of erosion damage in the pipeline branch area by the electropotential method

The work is devoted to the study of electropotential signals that occur when the wall thickness changes in the pipeline branch area due to erosive effects. The rationale for the placement of electrodes for the task of monitoring the wall thickness of the pipeline in the discharge zone is given. The dependences of the electropotential signals recorded when the size of the affected area changes are presented.

Keywords: pipeline wall thickness, pipeline drainage, erosion damage, electropotential method.

Information and measuring system for monitoring the state of the environment. Assessment of the impact and mutual influence of territorial systems based on functional geotaxons

The issues of using functional geotaxons to assess the degree of impact of technogenic production on the environment of developing territories and their interaction are considered. The use of functional geotaxa makes it possible to create algorithmic support for an information-measuring system (IMS) for calculating emissions of pollutants, formalizing the receipt and analysis of data describing these processes. The structure of the IIS for monitoring the impact of industrial production on the environment is presented. An assessment is made of the degree of impact of the analyzed territory on the environment and an assessment of the mutual impact of adjacent territories.

Keywords: carbon impact, carbon footprint, geotaxon, zoning of territory, classification of geotaxons, administrative zoning, functional zoning, digital model.

Olympiad «INSTRUMENT ENGINEERING-2024»

The results of the XIX All-Russian Student Olympiad «Instrument Engineering-2024» are considered.

Keywords: instrument engineering, Olympiad, organization and holding.