Issue №: 3(122)
The journal deals with the problems of vibration technologies and machines, mathematical methods of vibration process studies, information on design and technological development, presents teaching and methodological aspects of teaching in the Higher School of Applied Sciences, where vibration machines and technologies are studied.
APPLICATION OF PATTERN RECOGNITION THEORY FOR DIAGNOSING THE TECHNICAL CONDITION OF A DIESEL ENGINE
Anisimov Viktor – Doctor of Technical Sciences, Professor, Professor of the Department of Agroengineering and Technical Service, Vinnytsia National Agrarian University (3 Sonyachna St., Vinnytsia, Ukraine, 21008, e-mail: anisimov@vsau.vin.ua, ORCID: 0000-0002-3349-1630).
Kholodiuk Oleksandr – Candidate of Technical Sciences (PhD), Associate Professor, Head of the Department of Agroengineering and Technical Service, Vinnytsia National Agrarian University (3 Sonyachna St., Vinnytsia, Ukraine, 21008, e-mail: holodyk@vsau.vin.ua, ORCID: 0000-0002-4161-6712).
Ryaboshapka Vadym – Candidate of Technical Sciences (PhD), Associate Professor, Associate Professor of the Department of Agroengineering and Technical Service, Vinnytsia National Agrarian University (3 Sonyachna St., Vinnytsia, Ukraine, 21008, e-mail: vadym@vsau.vin.ua, ORCID: 0000-0003-1812-1030).
Lypnytskyi Roman – Assistant of the Department of Agroengineering and Technical Service, Vinnytsia National Agrarian University (3 Sonyachna St., Vinnytsia, Ukraine, 21008, e-mail: lupnutskiy@vsau.vin.ua, ORCID: 0009-0001-3711-5632).
The theoretical foundations of applying pattern recognition systems to the technical diagnostics of diesel engines are considered. Approaches to the formation of a diagnostic feature space, assessment of feature informativeness, and classification of technical conditions under complete and incomplete a priori information are systematized. The main types of recognition systems and the specific features of their application in diesel engine condition assessment are characterized. The mathematical foundations of parametric estimation using the maximum likelihood method and the Bayesian approach are presented. Relationships for univariate and multivariate normal probability density functions, estimates of the mean vector and covariance matrix, as well as the use of the Mahalanobis distance for evaluating the distance of a feature vector from the class center are given. It is shown that the effectiveness of technical condition recognition is determined not by the number of monitored parameters, but by their informativeness, discriminating ability, and the possibility of reliable measurement under real operating conditions. Using fuel pump plunger pairs as an example, the selection of the most informative diagnostic feature and the elimination of parameters that do not provide clear separation between serviceable and unserviceable conditions are substantiated. For diesel engine diagnostics, fault classes are formed for the fuel supply, lubrication and cooling systems, as well as for the crank mechanism and valve timing mechanism. The Bayesian decision rule, conditional risk, and the criterion for minimizing the probability of misclassification are considered. The proposed approach can be used as a methodological basis for developing automated systems for the technical diagnostics of diesel engines. Its practical application makes it possible to formalize the procedure for assigning the current engine condition to a predefined class and to improve the validity of diagnostic decisions based on a set of measured features.
1. Mykhalevych, V. M. (1998). Tenzorni modeli nakopychennia poshkodzhen [Tensor models of damage accumulation]. Vinnytsia: UNIVERSUM-Vinnytsia. [in Ukraine].
2. Sampaio, R. F. V., Pragana, J. P. M., Joaquim, G. P., Bragança, I. M. F., Silva, C. M. A., Martins, P. A. F. (2026). Reevaluating fracture forming limits in bulk forming under non-monotonic strain loading paths. Journal of Manufacturing and Materials Processing, 10(2), 66. https://doi.org/10.3390/jmmp10020066. [in Switzerland].
3. Kukhar, V., Artiukh, V., Butyrin, A., Prysiazhnyi, A. (2018). Stress-strain state and plasticity reserve depletion on the lateral surface of workpiece at various contact conditions during upsetting. Advances in Intelligent Systems and Computing, 692, 201–211. [in Switzerland].
4. Kukhar, V. V., Klimov, E. S., Chernenko, S. M., Balalayeva, E. Yu. (2020). Correlation of barreling effect with boundary friction coefficient during upsetting of various materials workpieces under processing conditions. Materials Science Forum, 992, 751–756. [in Switzerland].
5. Zhbankov, I. G., Markov, O. E., Perig, A. V. (2014). Rational parameters of profiled workpieces for an upsetting process. The International Journal of Advanced Manufacturing Technology, 72, 865–872. https://doi.org/10.1007/s00170-014-5727-5. [in Germany].
6. Titov, V. A., Zlochevska, N. K., Lavrinenkov, A. D., Haranenko, T. R. (2011). Doslidzhennia parametriv protsesu izotermichnoho presuvannia zahotovok z tytanovykh splaviv. Visnyk NTU «KhPI», 46, 67–72. [in Ukraine].
7. Syvak, R. I., Kotsiubivska, K. I., Sukhorukov, S. I. (2016). Vplyv protytysku, shcho stvoriuietsia tverdym seredovyshchem, na deformivnist zahotovok pry radialnomu vydavliuvanni. Visnyk mashynobuduvannia ta transportu, 4(2), 101–108. [in Ukraine].
8. Mykhalevych, V. M., Kraievskyi, V. O. (2009). Formuliuvannia variatsiinoi zadachi dlia modeli nakopychennia poshkodzhen pry hariachomu deformuvanni. Obrobka materialiv tyskom, 2(21), 12–16. [in Ukraine].
9. Kraievskyi, V. O. (2011). Vzaiemozviazok rozviazkiv variatsiinykh zadach, shcho pobudovani na osnovi modeli nakopychennia poshkodzhen spadkovoho typu. Teoretychni i prykladni zadachi obrobky metaliv tyskom ta avtotekhnichnykh ekspertyz: zbirnyk tez dopovidei. Vinnytsia: VNTU, 196–198. [in Ukraine].
10. Kraievskyi, V. O., Mykhalevych, V. M. (2015). Optymizatsiia shvydkisnoho rezhymu bahatostupenevoho hariachoho deformuvannia pry odnakovii tryvalosti stupeniv. Visnyk Donetskoho natsionalnoho universytetu. Ser. A: Pryrodnychi nauky, 1–2, 46–52. [in Ukraine].
11. Kraievskyi, V. O., Mykhalevych, V. M., Dobranyuk, Yu. V., Sawicki, D., Mussabekov, K. (2018). Selection of optimal path of strain rate change in the process of multistage hot deformation under the condition of the equal duration of stages. Proceedings of SPIE, 10808, 108084T. https://doi.org/10.1117/12.2501490. [in USA].
12. Mykhalevych, V. M., Kraievskyi, V. O. (2011). Optymizatsiia hariachoho tsyklichnoho deformuvannia iz pauzamy. Visnyk NTU «KhPI». Novi rishennia v suchasnykh tekhnolohiiakh, 46, 103–106. [in Ukraine].
13. Mykhalevych, V. M., Kraievskyi, V. O., Dobranyuk, Yu. V. (2009). Visesymetrychna osadka tsylindrychnykh zahotovok. Naukovi notatky, 25(1), 241–249. [in Ukraine].
14. Mikhalevich, V. M., Abramchuk, I. V. (2021). Maximum accumulated strain for linear two-link triangle-like deformation trajectories. International Applied Mechanics, 57(6), 720–736. https://doi.org/10.1007/s10778-022-01121-w. [in USA].
15. Myhalevich, V., Kolisnyk, M., Shtuts, A., Hryhorenko, N. (2025). Study of technological processes of stamping of flange-type parts based on the application of combined expression methods. Herald of Khmelnytskyi National University. Technical Sciences, 351(3.1), 590–599. https://doi.org/10.31891/2307-5732-2025-351-77. [in Ukraine].
16. Myhalevych, V. M., Shtuts, A. A., Kolisnyk, M. A., Zozulyak, I. A., Jelenich, A. P. (2025). Research into the processes of rolling stamping of ring and flange billets with a complex profile. Metallofizika i Noveishie Tekhnologii, 47(6), 647–666. https://doi.org/10.15407/mfint.47.06.0647. [in Ukraine].
17. Mykhalevych, V. M., Kolisnyk, M. A., Shtuts, A. A. (2025). Doslidzhennia napruzheno-deformovanoho stanu materialu zahotovok pid chas plastychnoho shtampuvannia prokatuvanniam. Metallofizika i Noveishie Tekhnologii, 47(1), 57–81. https://doi.org/10.15407/mfint.47.01.0057. [in Ukraine].
18. Matviichuk, V. A., Mykhalevych, V. M., Shtuts, A. A. (2023). Analiz napruzheno-deformovanoho stanu materialu zahotovok pry vysadzhuvanni resursooshchadnym metodom shtampuvannia obkochuvanniam. Tekhnika, enerhetyka, transport APK, 1(120), 76–85. https://doi.org/10.37128/2520-6168-2023-1-9. [in Ukraine].
19. Matviychuk, V., Mikhalevich, V., Shtuts, A. (2023). Analysis of stress-strain state (SSS) of billet material in the course of setting by resource-saving method of roll stamping. Vibratsii v tekhnitsi ta tekhnolohiiakh, 1(108), 63–72. https://doi.org/10.37128/2306-8744-2023-1-7. [in Ukraine].
About the journal
The journal "Vibrations in Engineering and Technologies" is included in the list of technical scientific publications of Ukraine
(Category "B", Order of the Ministry of Education and Science of Ukraine dated July 2, 2020 No. 886)
Old version of the site: http://vibrojournal.vsau.edu.ua/
The journal "Vibrations in Engineering and Technology" is indexed by the following databases and catalogs:
The certificateof massmedia State registration:kv no 16643-5115 from 30.04.2010 .
Founder of the journal: Vinnytsia National Agrarian University
The journal is devoted to highlighting current issues in engineering, mechanical engineering, and technological processes, including the study of dynamic and oscillatory phenomena in technical systems, the application of mathematical methods for process modeling and analysis, as well as the presentation of results of design-engineering and technological developments. Particular attention is given to the study of vibration processes and their application in modern technologies.
The purpose of the scientific journal “Vibrations in Engineering and Technologies” is to disseminate the results of fundamental and applied research in the field of engineering sciences aimed at developing theoretical foundations and practical approaches to the design, analysis, and improvement of machines, materials, and technological processes, including the use of vibration and oscillatory effects in various sectors of production.
The publication is focused on the formation of a modern scientific and informational environment for the effective exchange of research results, support of innovative development, and implementation of advanced technical solutions in industry, agro-industrial production, and related fields.
The journal promotes the development of interdisciplinary research, the integration of modern engineering approaches, and the enhancement of the efficiency of technological processes and technical systems, including through the rational use of vibration phenomena.
Objectives of the Scientific Journal
To achieve its stated purpose, the journal addresses the following key objectives:
dissemination of results of fundamental and applied scientific research in the fields of mechanics, mechanical engineering, technological processes, machine dynamics, and equipment, as well as in areas related to the application of vibration phenomena in engineering and technologies;
promotion of research aimed at the creation and improvement of machines, mechanisms, and technological equipment based on oscillatory and vibration processes;
support for the implementation of modern technological solutions focused on improving productivity, energy efficiency, and reliability of technical systems;
обеспечение scientific exchange of research results among research institutions, higher education establishments, and industrial enterprises;
development of interdisciplinary cooperation among researchers in the fields of mechanics, materials science, material processing technologies, and automation of technological processes;
dissemination of modern scientific achievements and advanced technologies related to the application of vibration processes in production and technical systems.
Publisher Vinnytsia National Agrarian University
In June 1994 the 2nd International Scientific and Technical Conference "Application of vibrations for technological purposes" was organized on the basis of Vinnytsia State Agricultural Institute. Leading experts in this field, noting the significant contribution to the school of Vibration Engineering under the leadership of P. S. Bernyk, proposed to create a professional all-Ukrainian scientific and technical journal "Vibration in engineering and technology..The journal was foundedat Vinnytsia State Agricultural Institute and P.S. Bernyk was elected to be the chief editor .
For all these years (since 1994) theJournal "vibration in engineering and technology" published 119 issues wherestudy of vibration effects, the creation of progressive energy saving technologies and equipment for their implementation were highlighted.
Currently Ihor Kupchuk, Candidate of Technical Sciences, Associate professor, Associate Professor of the Department of Engineering Mechanics and Technological Processes in the Agricultural Industry Faculty of Engineering and Technology Vinnytsia National Agrarian University is the chief editor of the "Vibrations in engineering and Technology"
The journal "Vibration in Engineering and technology", which has no analogues on the territory of Ukraine, is well known abroad.
