Institute of Applied Informatics

Trnava, Slovakia

Institute of Applied Informatics

Trnava, Slovakia
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Nemeth M.,Slovak University of Technology in Bratislava | Nemeth M.,Institute of Applied Informatics | Michalconok G.,Slovak University of Technology in Bratislava | Michalconok G.,Institute of Applied Informatics
Advances in Intelligent Systems and Computing | Year: 2017

The aim of this paper is to describe the cluster analysis of the failure data from the industrial process. The failure data used in the research were obtained from the automotive industry. The purpose of this analysis is to look at the data in broader view, and to discover various relationships in the data considering different parameters using data mining technique. The data analysis was performed by using hierarchical clustering for finding relationships between failures. We chose the hierarchical clustering analysis to find previously unknown relationships between given failure types, which is the type of task cluster analysis is mostly used for. © Springer International Publishing AG 2017.

Hagara I.,Institute of Applied Informatics | Tanuska P.,Institute of Applied Informatics
Proceedings - 2013 International Symposium on Computational and Business Intelligence, ISCBI 2013 | Year: 2013

This paper defines how to select the correct method or combinations of methods to minimize the impact of production system and common operation. Before any method is chosen it is necessary to know the primary system and its databases structures for optimal use of the actual data structure setup and the best design for the ETL process. Usually databases structures are categorized into groups, which define their quality. Classification helps to find an ideal method for each group and thus design the solution of the ETL process with minimal impact on the data warehouse and production system. © 2013 IEEE.

Bezak T.,Institute of Applied Informatics
ISIEA 2012 - 2012 IEEE Symposium on Industrial Electronics and Applications | Year: 2012

When creating distributed control systems, we can choose one of two possible approaches based on IEC 61131 and IEC 61499 standards. The first of them has been used for a long time in the PLC sphere, but it does not directly support the creation of extensive distributed systems. The second of the standards, IEC 61499, offers a direct solution for distributed system creation. The truth is that it is a new standard, which is why it is supported by only a few device manufacturers. This raises the question of which approach and which standard is more effective and suitable for individual system designing. © 2012 IEEE.

The paper discusses the problem of effective motion planning for industrial robots. The first part deals with current method for off-line path planning. In the second part is presented the work done with one of the simulation systems with automatic trajectory generation and off-line programming capability. A spot welding process is involved. The practical application of this step strongly depends on the method for robot path optimization with high accuracy, i.e. the path transformation into a time and energy optimal robot program for the real world, which is discussed in the third step.

Borys A.,University of Technology and Life Sciences in Bydgoszcz | Wasielewska K.,Institute of Applied Informatics | Rybarczyk D.,OPEN SYSTEM Dariusz Rybarczyk
International Journal of Electronics and Telecommunications | Year: 2013

The network calculus provides a theoretical background for description of traffic in computer networks. Using this tool in explanation of the so-called pathchirp method of measuring the available bandwidth, the validity and range of application of some relationships exploited are verified in this paper. The derivations are carried out in a wider context than that considered in a recent paper by Liebeherr et al. published in IEEE/ACM Transactions on Networking on network bandwidth estimation, providing thereby new insights and outcomes. These results, summarized in a table, show a means of bounding the service curve, depending upon its convexity or non-convexity property assumed and upon the linearity or non-linearity of a network considered. Moreover, it is shown here that the nonlinear network example analyzed by Liebeherr et al. can be viewed equivalently as a linear parametric network. For this network, the behaviour of the cross traffic is considered in a more detail, too.

Tadanai O.,Institute of Applied Informatics | Tanuska P.,Institute of Applied Informatics
INES 2015 - IEEE 19th International Conference on Intelligent Engineering Systems, Proceedings | Year: 2015

This paper is devoted to an introduction to Process Mining, describes the basic algorithms and the link between Data Mining and Process Mining. It also describes the connection Process Mining and practical usage. © 2015 IEEE.

Breier J.,Institute of Applied Informatics | Hudec L.,Institute of Applied Informatics
ACM International Conference Proceeding Series | Year: 2011

This work presents motivation for using metrics as an instrument for the risk analysis. There are information security standards, like ISO 27000 family, which serve as a reference for risk analysis and assessment, however there is a lack of formal methods and some discrete-scale evaluation. The main goal of this work is to propose the metric - control objective mappings, so the chosen metrics will help the management decide whether the control objectives are fulfilled or not. We present a mathematical model of evaluation based on metrics, which should lead to more automatized risk analysis. © 2011 ACM.

Bozek P.,Institute of Applied Informatics | Chmelikova G.,Institute of Engineering Pedagogy and Humanities
2011 14th International Conference on Interactive Collaborative Learning, ICL 2011 - 11th International Conference Virtual University, VU'11 | Year: 2011

Regarding the new trend to attract educational process for elementary and secondary school pupils the Department of Applied Informatics and Automation in Industry is permanently trying to implement new technologies via virtual scene. This virtual environment can be considered playing with knowledge or a serious game to be implemented into the teaching process. © 2011 IEEE.

Stremy M.,Institute of Applied Informatics | Elias A.,Institute of Applied Informatics
Proceedings of 2013 Science and Information Conference, SAI 2013 | Year: 2013

In the article are analyzed the possibilities of the real-time data exchange between small mount device (SMD) 'Assembleon Topaz X' and PLEX EPR information system. Main objective of the project was not only to design solution for the real-time data exchange for the SMD mentioned above, but also to design the standard applicable to all needful machines and PLCs in the factory which are or would be connected with PLEX ERP system (based on the proposed solution). The proposed solution and standard corresponds with the global aim - create extendable modular system for the real-time data integration of the production outputs, states and data with PLEX with all the benefits (e.g. extendibility, connectivity with the various systems and networks, connectivity with the various systems and networks etc.) © 2013 The Science and Information Organization.

Gese A.,Institute of Applied Informatics | Kopcek M.,Institute of Applied Informatics | Meszaros A.,Institute of Applied Informatics
IS'2012 - 2012 6th IEEE International Conference Intelligent Systems, Proceedings | Year: 2012

A filtering technique of neutron flux during the nuclear reactor restarting is presented in this paper. The nuclear reactor model is described by equation of inverse kinetics. The ionization chambers are used for neutron flux measure. To minimize the undesired noise of measurement the extended Kalman filter (EKF) method is used. The filter EKF is designed using the nuclear reactor model. © 2012 IEEE.

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