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Justification of the reliability and survivability properties of complex mechanical systems based on the self-organization principle

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AIP Conference Proceedings 2020年第1期2315卷

作者： A. F. Berman Matrosov Institute for System Dynamics and Control Theory Siberian Branch of the Russian Academy of Sciences 134 Lermontova St. Irkutsk 664033 Russia

This paper considers further development of the method for pre-design studies aimed at improving the reliability, survivability, and safety of complex mechanical systems, assembly units, and parts in accordance with the criteria of strength and resource. The Self-Organization Principle is represented as a combination of a heuristic hierarchical transdisciplinary model and metaheuristic and heuristic rules that automatically create a decision algorithm. The algorithm is determined by the object of study, by the chosen goal, and by the scientific and industrial description of the tasks. The representation of tasks as metaheuristics and heuristics allows for the use of methods and means for artificial intelligence, in particular, expert systems. Metaheuristics and heuristics are compiled by domain experts with further incorporation into the knowledge bases of the corresponding hierarchical complex of Expert systems and Computational Modules.

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Self-organizing technology for substantiating the properties of strength reliability of complex mechanical systems

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IOP Conference Series: Materials Science and Engineering 2020年第5期919卷

作者： A F Berman O A Nikolaichuk Matrosov Institute for System Dynamics and Control Theory SB RAS (ISDCT SB RAS) 134 Lermontova St. Irkutsk 664033 Russia

The issue of ensuring strength reliability remains relevant due to the insurmountable imperfections and/or violations of methods and means of its provision at all stages of the life cycle of Complex Mechanical systems. The uncertainty of some properties of strength reliability leads to catastrophic failures. To improve the efficiency and quality of the substantiation of properties, we developed a self-organizing information processing technology based on the interaction of logical heuristic procedures. We also identified the main uncertainties and the method for their acceptable neutralization based on additional expert information.

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Technology of data cleanse for their integration processes 1

Technology of data cleanse for their integration processes

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1st Scientific-Practical Workshop on Information Technologies: Algorithms, Models, systems, ITAMS 2018

作者： Paramonov, Viacheslav V. Shigarov, Alexey O. Ruzhnikov, Gennagy M. Matrosov Institute for System Dynamics and Control Theory SB RAS Irkutsk Russia Irkutsk State University Irkutsk Russia Irkutsk Scientific Center SB RAS Irkutsk Russia

The paper deals with approaches to heterogeneous data cleanse in processes of their preparation to integration. This process allows identifying and fixing different inconsistencies and errors in data to improve data quality. It provides effective versatile usage of data. The paper considered approaches that include a combination of methods fuzzy string comparison, phonetic algorithms, and the usage of the regular expression technique. The development of effective methods of data cleanse allows to improve the quality information obtained from various sources. © 2018 CEUR-WS. All rights reserved.

关键词： Data integration

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Distributed data storage for modern astroparticle physics experiments

arXiv

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arXiv 2019年

作者： Kryukov, Alexander Nguyen, Minh-Duc Bychkov, Igor Mikhailov, Andrey Shigarov, Alexey Dubenskaya, Julia Skobeltsyn Institute of Nuclear Physics Lomonosov Moscow State University Moscow119992 Russia Matrosov Institute for System Dynamics and Control Theory Siberian Branch of Russian Academy of Sciences Lermontov st. 134 Irkutsk Russia

The German-Russian Astroparticle Data Life Cycle Initiative is an international project launched in 2018. The Initiative aims to develop technologies that provide a unified approach to data management, as well as to demonstrate their applicability on the example of two large astrophysical experiments - KASCADE and TAIGA. One of the key points of the project is the development of a distributed storage, which, on the one hand, will allow data of several experiments to be combined into a single repository with unified interface, and on the other hand, will provide data to all participants of experimental groups for multi-messenger analysis. Our approach to storage design is based on the single write-multiple read (SWMR) model for accessing raw or centrally processed data for further analysis. The main feature of the distributed storage is the ability to extract data either as a collection of files or as aggregated events from different sources. In the last case the storage provides users with a special service that aggregates data from different storages into a single sample. Thanks to this feature, multi-messenger methods used for more sophisticated data exploration can be applied. Users can use bothWeb-interface and Application Programming Interface (API) for accessing the storage. In this paper we describe the architecture of a distributed data storage for astroparticle physics and discuss the current status of our work. Copyright © 2019, The Authors. All rights reserved.

关键词： Application programming interfaces (API)

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Geological Information system of environmental and human intervention impact assessment on bodies of water of the Irkutsk region 1

Geological Information System of environmental and human int...

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1st International Geographical Conference of North Asian Countries on China-Mongolia-Russia Economic Corridor: Geographical and Environmental Factors and Territorial Development Opportunities 2018

作者： Bychkov, I.V. Gachenko, A.S. Hmelnov, A.E. Fedorov, R.K. Fereferov, E.S. Irkutsk Scientific Center of Siberian Brunch Russian Academy of Science Irkutsk Russia Matrosov Institute for System Dynamics and Control Theory of Siberian Branch Russian Academy of Sciences Irkutsk Russia

In this paper the authors present a methodology on information support for research on human and environmental impact of Lake Baikal. The geoportal placed on the Internet allows researchers to create a common thematic database (tabular data) and map data (information layers) within the framework of the project, as well as to run Internet services for geoprocessing and complex data analysis problems solving. One of the key features of the engineered geoportal is the ability for users to create the structure of their databases independently (to add, to delete and to modify the tables structure) as well as to configure the run of geoprocessing services. Besides this platform allows you to take on projects on various subjects and with a large number of users simultaneously. They have took on works on 3D modeling of the surface topography of the coastal zone near the village of Listvyanka. Underwater terrain is combined with land relief. As a result catchment basins along which pollutants with groundwater enter the coastal waters of Lake Baikal have been identified. The data on pollution concentration sites is confirmed by practical measurements and coincides with the drainage areas. © Published under licence by IOP Publishing Ltd.

关键词： Groundwater

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The use of triangulation processing algorithms for the construction of combined model of the underwater and above-water terrain of the bed of the Bratsk Reservoir 1

The use of triangulation processing algorithms for the const...

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1st International Geographical Conference of North Asian Countries on China-Mongolia-Russia Economic Corridor: Geographical and Environmental Factors and Territorial Development Opportunities 2018

作者： Gachenko, A.S. Hmelnov, A.E. Hmelnova, T.A. Rugnikov, G.M. Irkutsk Scientific Center of Siberian Branch Russian Academy of Sciences Irkutsk Russia Matrosov Institute for System Dynamics and Control Theory of Siberian Branch Russian Academy of Sciences Irkutsk Russia

The article summarizes the experience gained during processing of the data about the terrain of the Bratsk Reservoir bed. We discuss the available sources of information on the land and underwater terrain and justify the choice of the sources used in the project. To measure the actual depths in the regions of interest an echo-sounder of the consumer grade was applied, and we consider the processing of its measurements in some details. We describe the free, open source and custom software, which we apply for the processing of the data. We consider the use of the several algorithms that we have developed for processing of the terrain points. The main goal of this processing is to obtain the combined terrain model, which summarizes the data from the various information sources: the topographic maps, the pilot charts and the echo sounder measurements. All the algorithms considered build and process the triangulations of irregular sets of points. The algorithms used are: constrained Delaunay triangulation construction;removal of artefacts of triangulation, constructed from the terrain isolines;map morphing to reconcile the terrain models: and triangulation fragment replacement. The resulting combined terrain model contains all the information about the terrain in the area of interest and allows to use the model for the further hydrological calculations. © Published under licence by IOP Publishing Ltd.

关键词： Triangulation

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Relaxation in population dynamics models with hysteresis ∗

arXiv

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arXiv 2020年

作者： Timoshin, Sergey A. Aiki, Toyohiko Fujian Province University Key Laboratory of Computational Science School of Mathematical Sciences Huaqiao University Quanzhou362021 China Matrosov Institute for System Dynamics and Control Theory Russian Academy of Sciences Lermontov str. 134 Irkutsk664033 Russia Department of Mathematical and Physical Sciences Faculty of Science Japan Women’s University 2-8-1 Mejirodai Bunkyo-kuTokyo112-8681 Japan

The present paper is concerned with a nonlinear partial differential control system subject to a state-dependent and nonconvex control constraint. This system models the dynamics of populations in the vegetation–prey–predator framework and takes account of diffusive and hysteresis effects appearing in the process. We prove the existence of solutions to our system and show that they are close in a suitable sense to solutions of the system with the convexified control constraint. Copyright © 2020, The Authors. All rights reserved.

关键词： control systems

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Machine learning in a multi-agent system for distributed computing management 4

Machine learning in a multi-agent system for distributed com...

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4th International Conference on Information Technology and Nanotechnology - Session: Data Science, DS-ITNT 2018

作者： Bychkov, I.V. Feoktistov, A.G. Sidorov, I.A. Edelev, A.V. Gorsky, S.A. Kostromin, R.O. Matrosov Institute for System Dynamics and Control Theory SB RAS Lermontov St. 134 Irkutsk664033 Russia Melentiev Energy Systems Institute Lermontov St. 130 Irkutsk664033 Russia

We address the relevant problem of machine learning in a multi-agent system for distributed computing management. We propose a new approach to the agent learning in the system for managing job flows of scalable applications in a heterogeneous distributed computing environment, which includes high-performance computing clusters, as its main components. We manage parameter sweep applications that execute their jobs in a virtual machine environment. We use the specialized tools to implement such environment. In contrast to the known approaches, our approach is based on the integrated applying of methods for job classification and parameter adjustment of algorithms for functioning agents. Simulation modeling the environment allows eliciting the necessary knowledge for parameter adjustment. During the learning of agents, we use the expert knowledge of environment node administrators. An example of solving the complex practical problem that relates to studying energy development directions of Russia demonstrates advantages of the proposed approach. © 2018 CEUR-WS. All rights reserved.

关键词： Multi agent systems

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A Local Branching MIP Heuristic for a Real-World Curriculum-Based Course Timetabling Problem 18th

A Local Branching MIP Heuristic for a Real-World Curriculum-...

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18th International Conference on Mathematical Optimization theory and Operations Research, MOTOR 2019

作者： Avella, Pasquale Boccia, Maurizio Viglione, Sandro Vasilyev, Igor DING – Dipartimento di Ingegneria Università del Sannio Piazza Roma 21 Benevento82100 Italy DIETI – Dipartimento di Ingegneria Elettrica e delle Tecnologie dell’Informazione Universitá degli Studi di Napoli "Federico II" Naples Italy Matrosov Institute of System Dynamics and Control Theory Siberian Branch of Russian Academy of Sciences Lermontov str. 134 Irkutsk664033 Russia

ISBN: (纸本)9783030333935

Automated timetabling is a challenging area in the timetabling and scheduling theory and practice, intensively addressed in research papers in the last two decades. There are three main classes of problems, which are usually studied: school timetabling, course timetabling and examination timetabling. In this report, we address a case study of the Curriculum-Based Course Timetabling (CB-CTT) problem, arising at Engineering Department of Sannio University. In general, the problem consists of finding a feasible weekly assignment of course lectures to rooms and time periods while respecting a wide range of constraints, which have to be either strictly satisfied (hard constraints) or satisfied as much as possible (soft constraints). The case study here addressed here has many special requirements due to local organizational rules. We were able to model the complex requirements by an Integer Programming formulation. The solution approach consists of using an MIP solver, integrated with two local branching heuristics tailored for the problem. The effectiveness of the proposed approach is illustrated by the computational results on two real instances. © 2019, Springer Nature Switzerland AG.

关键词： Integer programming

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Flatness-Based Feed-Forward control Design for Solenoid Actuators Considering Eddy Currents

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IFAC-PapersOnLine 2019年第15期52卷 567-572页

作者： Tristan Braun Johannes Reuter Joachim Rudolph ZF Friedrichshafen AG Corporate Research & Development 88038 Friedrichshafen Germany Institute of System Dynamics Konstanz University of Applied Sciences 78462 Konstanz Germany Chair of Systems Theory and Control Engineering Saarland University Campus A5 1 66123 Saarbrücken Germany

Flatness-based feed-forward control of solenoid actuators is considered. For precise motion planning and accurate steering of conventional solenoids, eddy currents cannot be neglected. The system of ordinary differential equations including eddy currents, that describes the nonlinear dynamics of such actuators, is not differentially flat. Thus, a distributed parameter approach based on a diffusion equation is considered, that enables the parametrization of the eddy current by the armature position and its time derivatives. In order to design the feedforward control, the distributed parameter model of the eddy current subsystem is combined with a typical nonlinear lumped parameter model for the electrical and mechanical subsystems of the solenoid. The control design and its application are illustrated by numerical and practical results for an industrial solenoid actuator.

关键词： differential flatness feed-forward control motion planning distributed parameter systems diffusion equation eddy currents solenoid valves

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