Michal Gregor

Dr. Michal Gregor

Department of Control and Information Systems, Faculty of Electrical Engineering and Information Technology, University of Žilina, SK-010 26, Žilina, Slovak Republic

Research Focus & Metrics

Academic Career Length

32Years (1995-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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29 June 2020 in Applied Sciences
Verified
Journal Article
Open access
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Patrik GrznárPatrik Grznár
Patrik Grznár
MGMichal Gregor
Michal Gregor
Martin KrajčovičMartin Krajčovič
Martin Krajčovič
ŠMŠtefan Mozol
Štefan Mozol
MSMarek Schickerle
Marek Schickerle
TBTomáš Bielik
Tomáš Bielik
Current trends in manufacturing, which are based on customisation and gradually customised production, are becoming the main initiator for the development of new manufacturing approaches. New manufacturing approaches are counted as the application of new behavioural management patterns that calculate the retained competencies of decision-making by the individual members of the system agent; the production becomes decentralised. The interaction of the members of such a system creates emergent behaviour, where the result cannot be accurately determined by ordinary methods and simulation must be applied. Modelling and simulation will, therefore, be an integral part of the planning and control of the processes of factories of the future. The purpose of the article is to describe the use of modelling and simulation processes in factories of the future. The first part of the article describes new manufacturing concepts that will be used in factories of the future, with a description of modelling and simulation routing in the frame of Industry 4.0. The next section describes how simulation is used for the control of manufacturing processes in factories of the future. The included subsection describes the implementation of this suggested pattern in the laboratory of ZIMS (Zilina Intelligent Manufacturing System), with an example of a metamodeling application and the results obtained.

1 January 2017 in Procedia Engineering
Verified
Journal Article
Open access
MPMarko Pedan
Marko Pedan
MGMichal Gregor
Michal Gregor
DPDariusz Plinta
Dariusz Plinta

1 March 1999 in Computers in Industry
Verified
Journal Article
Closed access
JKJán Košturiak
Ján Košturiak
MGMichal Gregor
Michal Gregor

1 January 2017 in Procedia Engineering
Verified
Journal Article
Open access
VVVladimír Vavrík
Vladimír Vavrík
MGMichal Gregor
Michal Gregor
Patrik GrznárPatrik Grznár
Patrik Grznár

19 July 2019 in Sustainability
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Journal Article
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Patrik GrznárPatrik Grznár
Patrik Grznár
MGMichal Gregor
Michal Gregor
ŠMŠtefan Mozol
Štefan Mozol
Martin KrajčovičMartin Krajčovič
Martin Krajčovič
LDLuboslav Dulina
Luboslav Dulina
MMMichal Major
Michal Major
Continuous cost reduction is a subject of interest for almost every production company. The cost reflects the competitiveness and sustainability of the business. Many company costs are linked to the effectiveness of production. One such cost is the work-in-progress (WIP) inventory cost. The present article deals with the design of a system for calculating the optimal WIP inventory stored in a manufacturing buffer, which, in the long term, provides the lowest costs. The main goal of the article is to design a new system that allows for the calculation of the optimal capacity of interoperation manufacturing buffers and thus the calculation of the optimal WIP inventory, which influences the lead time and cost. The newly designed system consists of algorithms that describe various steps, many of which use mathematical models. The individual blocks of algorithms are described, and the proposed system is verified and validated by simulation of the production line in the automotive production company.

26 July 2020 in Mathematics
Verified
Journal Article
Open access
PDF file
VVVladimír Vavrík
Vladimír Vavrík
MGMichal Gregor
Michal Gregor
Patrik GrznárPatrik Grznár
Patrik Grznár
ŠMŠtefan Mozol
Štefan Mozol
MSMarek Schickerle
Marek Schickerle
TBTomáš Bielik
Tomáš Bielik
Nowadays, many factories face changes on the global market and manufacturing is unpredictable. This fact creates a demand for developing new concepts of the factory which can represent a solution to these changes. This study presents a way for designing these new factory concepts, particularly a concept of the reconfigurable manufacturing lines. The methodology in this study uses characteristics of reconfigurable manufacturing systems for developing an algorithm for designing the basic factory layout. The methodology also combines classical math operations for designing the production layout with such approaches as simulation, cluster analysis, and LCS algorithm. This combination method with LCS algorithm and an entirely different approach to the design of the manufacturing line, has not yet been used. The accuracy of this methodology is then verified through the results of the complete algorithm containing these features. The main purpose of this study was to find new approaches to designing the reconfigurable factory layout. This article is presenting new ways that differ from the classical design method. The article suggests the new way is possible and the new systems also need new ways for designing and planning.