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Software Complex and Mathematical Models for Technological design of Ozone-safe Chladones Synthesis Processes

Software Complex and Mathematical Models for Technological D...

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International Conference on Control Systems, Mathematical Modelling, Automation and Energy Efficiency (SUMMA)

作者： Tamara Balabekovna Chistyakova Inna Vasilievna Novozhilova Dmitriy Vsevolodovich Doctorov Anastasia Valerievna Egorova Olga Evgenievna Bezdudnaya Computer-Aided Design and Control Systems Department World-class Laboratory Saint-Petersburg State Institute of Technology Saint-Petersburg Russia Russian Research Center Applied Chemistry (GIPH) JSC Design Institute Saint-Petersburg Russia World-class Laboratory Saint-Petersburg State Institute of Technology Saint-Petersburg Russia Computer-Aided Design and Control Systems Department Saint-Petersburg State Institute of Technology Saint-Petersburg Russia

ISBN: (数字)9798331532178

ISBN: (纸本)9798331532185

The functional structure of the problem-oriented software complex for solving the problem of designing a technological scheme for the multi-product processes for the synthesis of ozone-safe chladones is presented in the article. The inclusion of a customizable relational database of chladone characteristics in the software complex allows selecting equipment (working volumes of reactors) to form a production flow chart based on specified criteria (productivity, energy consumption, output concentrations of the target and by-products, etc.). The mathematical models library is the basis of the software complex. Mathematical models allow performing verification calculations of various reactors for the synthesis of a wide range of chladones in accordance with the technical specification. The advantage of the software complex is the ability to analyze the effect of contact time and process temperature on the output concentrations of by-products and target products with different compositions of the initial reaction mixture. The use of the software complex allows increasing the efficiency of designing chladones synthesis processes by reducing the time spent on selecting the hardware design of processes that ensure high conversion of raw materials and the required selectivity of processes for the target component.

关键词： Productivity Relational databases Software Mathematical models Raw materials Libraries Hardware Energy efficiency Kinetic theory Inductors

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The Impact of Errors in Business Processes on the Operability of Engineering Infrastructure

The Impact of Errors in Business Processes on the Operabilit...

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International Conference on Management of Large-Scale System Development (MLSD)

作者： Georgy G. Grebenyuk Georgy N. Kalyanov Serge P. Kovalyov Olga V. Lukinova Alexander A. Roschin Leonid A. Sereda Laboratory of Computer Aided Design and Control of Multi-Purpose Objects V.A. Trapeznikov Institute of Control Sciences of RAS Moscow Russia

Typical errors in modern enterprise business processes arisе from incorrect construction of business operation sequences. The impact of errors in business processes on the performance of the engineering infrastructure is studied. The problem complexity requires the creation of a business processes integrated model and technical object models. The paper considers the principles of creation and features of the presented model.

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Simulation of Chemical Oscillator Network

Simulation of Chemical Oscillator Network

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2022 Conference of Russian Young Researchers in Electrical and Electronic Engineering, ElConRus 2022

作者： Kopets, Ekaterina E. Karimov, Artur I. Khafizova, Aliya M. Katser, Evgenii A. Shchetinina, Tatiana G. Saint Petersburg Electrotechnical University Youth Research Institute St. Petersburg Leti Saint Petersburg Russia Saint Petersburg Electrotechnical University Leti Department of Computer Aided Design Saint Petersburg Russia

ISBN: (纸本)9781665409933

This work proposes a study of a small-scale chemical oscillator network based on the Brusselator equation. We investigate how coupling function and topology affect the network time-domain evolution and possibility of using the network for computations. The results of the study show practical prospects of using the Brusselator network for signal classification. © 2022 IEEE.

关键词： Neural networks

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Higher Order Schemes for Problems of Dynamics of Layered Media with Nonlinear Contact Conditions 22nd

Higher Order Schemes for Problems of Dynamics of Layered Med...

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22nd International Conference on Computational Mechanics and Modern Applied Software Systems, CMMASS 2021

作者： Nikitin, Ilia S. Golubev, Vasily I. Institute of Computer Aided Design of the Russian Academy of Sciences 19/18 2nd Brestskaya ul. Moscow123056 Russia 9 Institutsky per. Moscow Region Dolgoprudny141701 Russia

ISBN: (纸本)9789811689253

In this chapter, we consider the dynamic loading problem of a deformable solid medium containing slip planes with nonlinear slip conditions on compressed contact boundaries and weak delamination on stretched ones. The explicit–implicit scheme is constructed for the numerical solution of the governing system of equations, which is exactly reduced to adjusting the values of the stress tensor after performing an elastic step. The elastic step is calculated using an explicit grid-characteristic method. The implicit approximation of the constitutive relations containing a small parameter in the denominator of nonlinear free terms is performed with the second approximation order and is consistent with the explicit elastic step. The correction procedure is also applicable for those cases when the viscosity parameter of interlayers providing the sliding mode of contact boundaries is not small. In the stretched mode, equations of an effective transversely isotropic elastic medium are obtained. They are also solved by the grid-characteristic method with a consistent approximation order. The solution of the seismic wave propagation problem in an inhomogeneous fractured geological massif is obtained numerically in a two-dimensional formulation. © 2022, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Stress tensor

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Classification of Bearing Faults by Approximation of Peak-To-Peak Amplitudes Distribution 2nd

Classification of Bearing Faults by Approximation of Peak-To...

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2nd NIELIT's International Conference on Communication, Electronics and Digital Technologies, NICEDT 2024

作者： Karimov, Timur I. Logunov, Oleg Y. Druzhina, Olga S. Kolev, Georgii Y. Kopets, EkaterinaE. Kaplun, Dmitrii I. Department of Computer-Aided Design St. Petersburg Electrotechnical University "LETI" Saint Petersburg Russia Youth Research Institute St. Petersburg Electro technical University "LETI" Saint Petersburg Russia Artificial Intelligence Research Institute China University of Mining and Technology Xuzhou China Department of Automation and Control Processes St. Petersburg Electrotechnical University "LETI" Saint Petersburg Russia

ISBN: (纸本)9789819736034

To diagnosis the bearings faults in electric machines, the common approach is to acquire vibration signals from the machine-mounted accelerometers and process them by machine learning (ML) algorithms. Although many features can be extracted from signals to perform the classification, methods that require a minimum number of features are of interest to facilitate real-time processing. As a promising technique, we present an approach involving approximation of the vibration signals peak-to-peak amplitudes distribution with a Weibull model, where two parameters of the model are considered as features. The resulting accuracy of the proposed classifier reached 99.6%, which is superior to other considered features pairs from time and frequency domain. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Weibull distribution

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Search and Selection of Blocking Cross-sections in the Analysis of Vulnerability and Efficiency of Engineering Networks 3

Search and Selection of Blocking Cross-sections in the Analy...

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3rd International Conference on Control Systems, Mathematical Modeling, Automation and Energy Efficiency, SUMMA 2021

作者： Grebenyuk, Georgy Lubkov, Nikolay Sereda, Leonid V.A. Trapeznikov Institute of Control Sciences of RAS Laboratory of Computer Aided-Design and Control of Multi-Purpose Objects Moscow Russia

ISBN: (纸本)9781665439817

The analysis of approaches to assessing the vulnerability of complex network systems and indicators used to measure the effect of external influences on the nodes and connections of the network is carried out. The problem of blocking target objects of the system by constructing cross-sections using the developed practical algorithms is considered. A probabilistic modeling algorithm is proposed to construct cross-sections. For the selection of cross-sections that cause the maximum number of outages of non-Target consumers, indicators of the availability of nodes and cross-sections to resource sources are proposed. An example of the application of these indicators is given, illustrating the selection of blocking cross-sections on a typical IEEE scheme. © 2021 IEEE.

关键词： Efficiency

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Analytical methods for minimizing the cost of repair work on pipeline networks in the formation of a digital double of infrastructure 14

Analytical methods for minimizing the cost of repair work on...

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14th International Conference Management of Large-Scale System Development, MLSD 2021

作者： Andrey, Krygin Laboratory of Computer-Aided Design and Control of Multi-Purpose Objects V.A. Trapeznikov Institute of Control Sciences of RAS Moscow Russia

Describing the methods of minimizing the cost of repair work in the areas of engineering networks for the practical assessment. This methods are the part of the information support system for the decision to extend th... 详细信息

ISBN: (纸本)9781665412308

关键词： Weibull distribution

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design of Fish-like Biomorphic Propulsion

Design of Fish-like Biomorphic Propulsion

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International Conference on Soft Computing and Measurements (SCM)

作者： Dmitriy S. Goryunov Timur I. Karimov Artur I. Karimov Vyacheslav G. Rybin Georgii Yu. Kolev Computer Aided Design Department Saint Petersburg Electrotechnical University “LETI” St. Petersburg Russia Department of Computer Aided Design St. Petersburg Electrotechnical University “LETI” St. Petersburg Russia Youth Research Institute Saint Petersburg Electrotechnical University “LETI” St. Petersburg Russia

One of the most important areas of robotics is the search for new solutions for the creation of biomorphic robots. This paper focuses on propulsion design for an underwater robot in a fish form factor based on the principles of soft robotics. The biomimetic robot is designed using a flexible torso and an oscillating tail, which is controlled by a DC motor optimized for speed through numerical and experimental calculations, and a servo motor that allows you to set the direction of movement. The use of a DC motor to drive the robot reduces losses compared to other oscillatory propulsion systems that are driven by one or more mi servomotors.

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Methods and Technologies for Primary Processing, Modeling and Visualization of Industrial Data for Quality Control of Multi-assortment Polymeric Films

Methods and Technologies for Primary Processing, Modeling an...

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International Conference on Control Systems, Mathematical Modelling, Automation and Energy Efficiency (SUMMA)

作者： Tamara Chistyakova Andrey Polosin Gleb Platonenko Christian Kohlert Computer-Aided Design and Control System Department Saint Petersburg State Institute of Technology (Technical University) Saint Petersburg Russia Kohlert-Consulting Oberahr Germany

The methods of primary processing, modeling, visualization of data of large-capacity production of polymeric films of a wide range are described. The methods are implemented in the product quality control system. Industrial data is characterized by a big volume, high accumulation rate, a variety of sources, incompleteness, encoded values, unstructured nature. Therefore, their primary processing consists in converting them into real values, filtering, structuring by types of production parameters. The lack of measurement of a number of important quality indices of the polymeric material at the production stages, including the quality indices of the extrudate, causes incompleteness of data about the control object. This incompleteness led to the creation of a library of adjustable mathematical models for calculating quality indices depending on the control actions measured in production, with different configurations of aggregates and types of films. Complete arrays of measured and calculated parameter values are stored in a database for subsequent analysis, processing (by methods of mathematical statistics and machine learning) and visualization. The data are visualized in the form of parameter trends and histograms for distributions of the specific number of defects of various types across the film rolls. Visualization allows you to study the influence of control actions and technological additives (for example, stabilizers) on the quality of the film to select a rational recipe and production mode of the film. The proposed methods are implemented in the form of a flexible software package. It is adjusted to the range of films produced, configurations of production lines and is designed to support decision-making on the control of consumer characteristics of polymeric films. Testing of the software package according to the data of industrial extrusion-calendering production of rigid packaging films based on polyvinyl chloride has confirmed its operability. The effec

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Discrete Dynamics of Extremely Multistable Piecewise Chaotic System

Discrete Dynamics of Extremely Multistable Piecewise Chaotic...

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2023 Seminar on Information Computing and Processing, ICP 2023

作者： Vybornov, Nikita A. Rybin, Vyacheslav G. Wafubwa, Jeff L. Kamal, Owais St. Petersburg State University of Aerospace Instrumentation 'SUAI' Department of Computing Systems and Networks Saint Petersburg Russia St. Petersburg Electrotechnical University 'LETI' Youth Research Institute Saint Petersburg Russia St. Petersburg Electrotechnical University 'LETI' Department of Computer-Aided Design Saint Petersburg Russia

ISBN: (纸本)9798350369830

In this paper we consider the discretization effects appearing in discrete models of the extremely multistable system while simulated by various numerical methods. In our study, we investigate the following set of methods: explicit, implicit, and semi-implicit Euler methods, composition diagonally implicit (CD) methods, explicit and implicit midpoint integrators. We use bifurcation diagrams for highlighting the features of dynamics under investigation introduced by various numerical methods. Significant discrepancies between the nonlinear behavior of discrete models obtained by different integration operators are observed and explained. © 2023 IEEE.

关键词： Numerical methods

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