Publikace

informace pocházejí z univerzitní databáze V3S

Autoři:
Othman, A.; prof. Ing. Dušan Maga, Ph.D.; Hrad, J.
Publikováno:
2024, 2024 21st International Conference on Mechatronics - Mechatronika (ME), New Jersey, IEEE), ISBN 979-8-3503-9490-0
Anotace:
Today, energy management systems represent a cornerstone of every embedded system, especially in IoT devices, which have become a fundamental part of our lives in this digitalized world. Many researchers have focused on using EMS to conserve energy and extend the lifetime of IoT devices. We chose a different approach to provide more energy, thereby prolonging the operational lifetime of IoT devices and enhancing their QoS parameters. This approach is based on providing an energy-aware management system that adapts the QoS based on a machine learning model predicting the available solar energy hourly, which led to extending the operational lifetime of the IoT device by approximately 300 %, the QoS in terms of active duty cycle by 400 %, and transmission power strength by 200 %.
Typ:
Stať ve sborníku z mezinár. konf.

Autoři:
prof. Ing. Dušan Maga, Ph.D.; Hájek, J.
Publikováno:
2024, ISBN 979-8-3503-9490-0
Typ:
Sborník z mezinár. konf.

Autoři:
Othman, A.; Hrad, J.; Hájek, J.; prof. Ing. Dušan Maga, Ph.D.
Publikováno:
2022, Sustainability — Open Access Journal, 14 (24), ISSN 2071-1050
Anotace:
In this article, we deal with the problem of Hybrid Energy Harvesting control strategies, while paying attention to their properties and suggesting criteria to assess their suitability for specific energy harvesting techniques, as well as their application in different areas of technology—especially Wireless Sensor Networks and the Internet of Things. Many research works have already been published on the topic of combining resources for Energy Harvesting; nevertheless, a comprehensive review of the control strategies for such systems and a comparison of their most important properties is missing. This is the genesis and the main subject of this article. We have performed a deep research investigation of available resources. We have identified eight different control strategies and defined a set of the most important parameters (including their possible ranges/states) as criteria to be able to compare them. The corresponding sections of this article begin with a general description of the respective strategies and their principles (including generalized schemes), which is followed by specific examples of best practices. The key conclusions of the performed analysis are summarized in a comparison table that allows the readers to make their own conclusions and choices.
DOI:
Typ:
Článek v periodiku excerpovaném SCI Expanded

Autoři:
Othman, A.; prof. Ing. Dušan Maga, Ph.D.; Hrad, J.
Publikováno:
2022, 2022 20th International Conference on Mechatronics - Mechatronika (ME), New York, IEEE Press), p. 163-166), ISBN 978-1-6654-1039-7
Anotace:
Nowadays, increasing the demand for data and the complexity of wireless sensor network hardware lead to an increase in the energy consumption of the respective devices. Using a huge number of WSN nodes is required to provide sufficient data to meet the requirements of modern applications. Energy harvesting systems are an ideal response to the rise in energy prices and costs of maintenance, but using a single energy harvester is insufficient because of the discrete nature of renewable energy resources and the high demand for energy in modern IoT systems. The solution is to harvest energy from several different resources to provide for a continuous energy source. In this paper, we introduce a new design of a platform for harvesting and combining energy from different renewable energy resources and storing it in a device equipped with battery management system to provide information about the current state of charge.
DOI:
Typ:
Stať ve sborníku z prestižní konf.

Autoři:
prof. Ing. Dušan Maga, Ph.D.; Hájek, J.
Publikováno:
2022, ISBN 978-1-6654-1040-3
Typ:
Sborník z mezinár. konf.

Autoři:
prof. Ing. Dušan Maga, Ph.D.; Hrad, J.; Hájek, J.; Othman, A.
Publikováno:
2021, Energies, 14 (17), ISSN 1996-1073
Anotace:
Increasing the efficiency of the solar energy harvesting system is an urgent need in light of the climate changes we live in nowadays. The most significant data to be processed in the photovoltaic harvesters are the curve of solar radiation intensity to achieve the maximum benefits of the solar incident light. This processing contains complicated procedures, and the used algorithms are also high computational power-consuming which makes using special software and high potential hardware essential requirements. An explanation of the Minimum Energy Effect method is presented in this article. Our proposed algorithm uses this method to provide a simple and high-accuracy mathematical tool for generating a simple alternative curve instead of the complicated original nonlinear curve of solar radiation intensity. The produced curve is suitable for further operations, such as derivatives, integrals, or even simple addition/subtraction. Our algorithm provides a gradual procedure to find an optimum solution of the equation system, unlike the iterative methods. In addition, the results of analyzing the effect of time-division density showed the relationship between the speed of solving the task and the accuracy of results.
DOI:
Typ:
Článek v periodiku excerpovaném SCI Expanded

Autoři:
prof. Ing. Dušan Maga, Ph.D.; Hájek, J.
Publikováno:
2021, ISBN 978-1-7281-9327-4, ISSN 2472-7687
Typ:
Sborník z mezinár. konf.

Autoři:
prof. Ing. Dušan Maga, Ph.D.; Hrad, J.; Hájek, J.; Boulerie, A.
Publikováno:
2020, 2020 19th International Conference on Mechatronics - Mechatronika (ME), Piscataway (New Jersey), IEEE), p. 211-214), ISBN 978-1-7281-5602-6
Anotace:
The paper describes the vibration laboratory stand solution, developed and realized by authors. The stand is used to reduce the influence of the environment on the measured system, so only required vibration sources are present (and captured). The stand itself is presented in the paper, as well as its finite element analysis. These are followed by an initial set of measurements, including the description of the used hardware and settings.
DOI:
Typ:
Stať ve sborníku z prestižní konf.

Autoři:
prof. Ing. Dušan Maga, Ph.D.; Hájek, J.
Publikováno:
2020, ISBN 978-1-7281-5602-6
Typ:
Sborník z mezinár. konf.

Autoři:
prof. Ing. Dušan Maga, Ph.D.
Publikováno:
2019, ISBN 978-1-7281-0289-4
Typ:
Sborník z mezinár. konf.

Autoři:
Nahdi, T.; prof. Ing. Dušan Maga, Ph.D.
Publikováno:
2018, SUSTAINABILITY, 10 (3), ISSN 2071-1050
Anotace:
The efficient utilization of energy sources seems to be one of the most challenging problems for designers and scientists alike. This challenge particularly applies to power electronics, where the increasing value of energy density leads to demands for optimization processes and better exploitation (and distribution) of available power sources. As a result, the implementation of frequency-controlled systems is more often in the spotlight. The systems with doubly fed induction machines and a frequency converter in the rotor circuit are typical representatives of these demands. In a wide spectrum of power electronic systems, frequency converters are often used that have a constant current, a diode rectifier, and a thyristor inverter. This article provides a novel approach to modeling methodology, and presents a unique comparison of four different frequency converter schemes that are connected to a doubly fed induction machine. This article presents the modeling methodology itself, as well as the results based on an asynchronous generator motor fed by different frequency converters, a spectral analysis of the output voltage of the used frequency converters, and a comparison of the different technologies. Based on the above, this paper recommends the use of a multistage-multilevel frequency converter scheme.
DOI:
Typ:
Článek v periodiku excerpovaném SCI Expanded

Autoři:
Othman, A.; prof. Ing. Dušan Maga, Ph.D.
Publikováno:
2018, Proceedings of the 2018 18th International Conference on Mechatronics - Mechatronika (ME) 2018, Brno, Brno University of Technology, Faculty of Mechanical Engineering), p. 397-402), ISBN 978-80-214-5544-3
Anotace:
Extending the lifetime of the wireless sensor node is a critical issue facing the developing of the wireless sensor networks. One of the solutions is employing the energy harvesting technologies to collect renewable energy from the ambient environment. For indoor Wireless Sensor Network (WSN) applications, the chosen of the energy harvester is based on the requirements of the application and the environment. Our application will be used in offices and hospitals so using a noiseless technology is required. So, the photovoltaic energy is the best solution which matches the requirements. In this paper, we will present the design of the photovoltaic energy harvesting system with mathematical modeling and the results of the real experiments.
Typ:
Stať ve sborníku z prestižní konf.

Autoři:
Skvortsov, B; Nahdi, T.; prof. Ing. Dušan Maga, Ph.D.
Publikováno:
2018, Recent Technological and Scientific Advances, Springer, Cham), p. 302-310), ISBN 978-3-319-65959-6, ISSN 2194-5357
Anotace:
The goal of the research is to improve the technical characteristics of the mecha-tronic system consisting of electric power turbo-generator of two different fre-quencies - an increased frequency of 200 Hz and an industrial frequency of 50 (60) Hz - at a rotor speed of 628 rad/s (6,000 rpm) equal to the turbine rotation frequency, complete with matrix frequency converter (MFC), included in the cir-cuit of a three-phase winding of an additional part of the rotor. The article describes the device and the operating principle of the mechatronic system under consideration. The obtained analytical relationships allow to deter-mine the calculated full power of the MFC and to calculate the harmonic compo-nent of the generated electric power of the industrial frequency.
Typ:
Stať ve sborníku z prestižní konf.

Autoři:
prof. Ing. Dušan Maga, Ph.D.; Stefek, A.; Brezina, T.
Publikováno:
2018, ISBN 978-80-214-5542-9
Typ:
Sborník z mezinár. konf. cizojazyčně

Autoři:
Othman, A.; prof. Ing. Dušan Maga, Ph.D.
Publikováno:
2018, Proceedings of the International Conference on New Trends in Signal Processing, Liptovský Mikuláš, Akadémia ozbrojených síl), p. 134-141), ISBN 978-80-8040-547-2, ISSN 1339-1445
Anotace:
The paper gives an overview of Wireless Sensor Networks (WSN) from the viewpoint of energy consumption focused on the network security. The security issues are nowadays significant for all wireless (and wired as well) networks; however, in wireless sensors, limitations of the available energy have to be taken into account. Therefore, the network managers/designers have to decide whether a secure communication in the system required or not. The major part of the paper is in presenting the energy consumption model implemented in Matlab/Simulink environment to evaluate the energy requirements of each considerable security solution compared to opened (means nonsecure) system.
DOI:
Typ:
Stať ve sborníku z prestižní konf.

Autoři:
prof. Ing. Dušan Maga, Ph.D.
Publikováno:
2018, ISBN 978-3-903176-03-4, ISSN 2163-4033
Typ:
Sborník z mezinár. konf.

Autoři:
Hrad, J.; Zeman, T.; Šimák, B.; Spiesová, D.; prof. Ing. Dušan Maga, Ph.D.
Publikováno:
2017, Recent Global Research and Education: Technological Challenges, Cham, Springer), p. 459-465), ISBN 978-3-319-46489-3, ISSN 2194-5357
Anotace:
An international project realized by 9 partners from 4 EU countries (CZ, ES, SK, DE) will be introduced in the paper. The main objective of the project is to increase the quality of education at schools using a form that will be highly attractive. Topics are based on 20 different subjects (telecommunications, electronics, automation and related areas). The following types of new-generation learning objects have been developed for students and teachers: explanatory modules, worksheets, tests, explanatory dictionary, and multimedia translation dictionary. These learning objects are described in the paper. Also the quality management of a large international team, as well as the social impact and expectations will be discussed.
DOI:
Typ:
Stať ve sborníku z prestižní konf.

Autoři:
Skvortsov, B.; Nahdi, T.; prof. Ing. Dušan Maga, Ph.D.
Publikováno:
2016, Proceedings of the 2016 17th International Conference on Mechatronics - Mechatronika (ME) 2016, Prague, Czech Technical University in Prague, Faculty of Electrical Engineering), p. 131-134), ISBN 978-80-01-05883-1
Anotace:
The problems of using of mechatronic devices as a part of a ship unified high voltage electric power system (EPS) is considered. EPS contains a turbogenerator source of high frequency electric power (200 Hz), an electric propulsion system (PS) and a system of power takeoff (SPT). The system of power takeoff is used for the supply of common ship consumers with the common mains frequency (50 Hz). Specified EPS with PS and with a system of SPT which are constructed on the basis of matrix frequency converters (FC) has significantly improved mass-volume parameters of active materials of EPS components (turborgenerators, transformers).
Typ:
Stať ve sborníku z prestižní konf.

Autoři:
Amwary, A; prof. Ing. Dušan Maga, Ph.D.; Nahdi, T.
Publikováno:
2016, 2016 NEW TRENDS IN SIGNAL PROCESSING (NTSP), Liptovský Mikuláš, Akadémia ozbrojených síl), p. 1-4), ISBN 978-80-8040-529-8
Anotace:
Wireless sensor networks have strict constrains in size, weight and energy. The conflict of long lifetime and strict energy constrain brings a natural integration of energy harvesting into wireless sensor networks. A modified low energy adaptive clustering hierarchy (LEACH) protocol has been proposed to increase the network life time. Modified LEACH is divided into two main phases at the first setup phase and at the second steady state phase. Setup phase has been modified such that cluster head (CH) selection will be selected only from advanced nodes. Results showed significant improvement in WSN overall lifetime. Simulations show number of dead nodes vs rounds. Comparison between pure LEACH and modified one showed significant improvement in lifetime, also comparison between modified LEACH and energy aware multi-hop multi-path (EAMMH) protocol shows significant improvement in performance.
DOI:
Typ:
Stať ve sborníku z prestižní konf.

Autoři:
prof. Ing. Dušan Maga, Ph.D.; Štefek, A.; Březina, T.
Publikováno:
2016, ISBN 978-80-01-05883-1
Typ:
Sborník z mezinár. konf. cizojazyčně

Autoři:
Spiesova, D.; prof. Ing. Dušan Maga, Ph.D.
Publikováno:
2016, 2016 17th International Scientific Conference on Electric Power Engineering (EPE 2016), New York, IEEE), p. 165-169), ISBN 978-1-5090-0908-4, ISSN 2376-5623
Anotace:
This paper deals with smart grids and social acceptance of them and based on various studies from this field attempts to answer questions such as how the society perceives this new technology, what are the sources of an influence, and what should be done in order to achieve a smooth implementation of smart grids with as few obstacles as possible. Rather new technologies are necessary for implementation of the smart grids. These must also focus on households, since these can be considered as a part of the complete system executives. So it is important that costumers understand their role and feel their involvement as an advantage for them. The base of the success lays on better relation between all business partners with particular respect to customers. The public opinion, probably one of the most important aspects in this transition to smart grids, can be influenced by not only media and marketing strategies of the energy providers, but also by a community as a whole. Since the economy and technology as well are still the priorities, consumers and communities should also be seen as one of the most crucial parts for successful implementation of smart grids.
Typ:
Stať ve sborníku z prestižní konf.

Autoři:
prof. Ing. Dušan Maga, Ph.D.; Hrochová, M.
Publikováno:
2016, ISBN 978-1-4673-8473-5
Typ:
Sborník z mezinár. konf. cizojazyčně

Autoři:
prof. Ing. Dušan Maga, Ph.D.; Šimák, B.
Publikováno:
2016, Advanced Mechatronics Solutions, Cham, Springer), p. 231-236), ISBN 978-3-319-23923-1, ISSN 2194-5357
Anotace:
Cedupoint (TM) (Continuing Education Point) is an integral part of the Department of Telecommunication Engineering at the Czech Technical University in Prague, Faculty of Electrical Engineering. Due to its mission, it provides a lot of activities focused on promotion of university education techniques and technologies to primary and secondary schools. The activity presented in this paper is based on introduction of touchscreen devices (tablets) into education at small- and medium-sized primary and secondary schools. The paper presents a summary of all related activities and provides an overview of relevant technologies and technical solutions as well as fundamental ideas of the designed education program; nevertheless, it is focused on the major activity related to classroom management systems designed for teachers of these schools.
DOI:
Typ:
Stať ve sborníku z prestižní konf.

Autoři:
prof. Ing. Dušan Maga, Ph.D.; Debret, A.; Turygin, I.
Publikováno:
2016, Proceedings of the 2016 17th International Conference on Mechatronics - Mechatronika (ME) 2016, Prague, Czech Technical University in Prague, Faculty of Electrical Engineering), p. 269-271), ISBN 978-80-01-05883-1
Anotace:
Due the previous work of the authors, the technical textile materials were successfully used as a protection against the undesirable external magnetic field. The woven textiles (compound of cotton, polyester, and conductive fibers) were analyzed before in 2D finite element environment. The mechanical (and electrical) structure of the material has been simplified as a 2D thin layer, and the simplification parameters have been set in comparison to measurement results. Recently, the latest results are presented in the paper, where the 2D model is extended to 3D space model, and a high-frequency analysis is provided. The obtained results are compared to 2D simulation (as well as to measurements) and discussed with particular attention paid to FE model and environment.
Typ:
Stať ve sborníku z prestižní konf.

Autoři:
Nahdi, T.; prof. Ing. Dušan Maga, Ph.D.; Turygin, Y. V.
Publikováno:
2015, Vestnik Izhevskogo gosudarstvennogo techniceskogo universiteta imeni M. T. Kalashnikova, 18 (2), p. 10-15), ISSN 1813-7903
Anotace:
This paper deals with possibilities of modeling a vibration energy harvesting device in the field of telecommunication appliances. The vibration energy harvester uses an ambient energy of a mechanical vibration and it provides an autonomous source of energy for wireless sensors or autonomous applications. A model of energy harvesting system excited by measured mechanical vibrations is created. The instantaneous output power and the total electrical power generation are calculated. The results confirmed the possibility to use the technology of Energy Harvesting from vibrations to capture electric energy from vibrations.
Typ:
Článek v odborném recenzovaném periodiku

Autoři:
Awamri, A.; prof. Ing. Dušan Maga, Ph.D.; Nahdi, T.
Publikováno:
2015, Proceedings of the 17th International Conference on Research in Telecommunication Technologies 2015, Ostrava, VŠB - Technical University of Ostrava), p. 5-8), ISBN 978-80-248-3797-0
Anotace:
Sensor networks are formed from a collection of sensing nodes which communicate with one another, typically through wireless channels, in order to collect spatially distributed data about their environment. Sensor nodes are operating on battery power with a limited energy resources. The energy consumption is one of the most important issues and the designing of the energy consumption protocol is very critical for prolonging the lifetime. This paper introduces the LEACH routing protocol in Homogenous & Heterogeneous system supported by simulation and analysis of the results. From the brief analysis of the simulation we have come to the conclusion that LEACH Heterogeneous System provides a good performance in energy consumption and increasing the level in lifetime of the wireless sensor networks than LEACH Homogeneous System.
Typ:
Stať ve sborníku z mezinár. konf. cizojazyčně

Autoři:
Nahdi, T.; prof. Ing. Dušan Maga, Ph.D.
Publikováno:
2014, RTT 2014 Conference Proceedings, Praha, Czech Technical University in Prague), p. 19-23), ISBN 978-80-01-05540-3
Anotace:
Nowadays an up-to date and “green” technology is in the spotlight of the specialists – the energy harvesting. The technology based on “picking up” the small amounts of the energy from environment is quite well discussed by different authors; nevertheless, there is only a minor trend to focus to thetelecommunication technologies. Therefore, this paper is going to present a basic overview on energy harvesting technologies with special viewpoint focused on telecommunication appliances. Special application of presented knowledge might have been focused to compose textile materials, originally design for protection of humans and devices against electromagnetic fields.
Typ:
Stať ve sborníku z mezinár. konf. cizojazyčně

Autoři:
prof. Ing. Dušan Maga, Ph.D.; Hájek, J.; Neruda, M.; Vojtěch, L.
Publikováno:
2014, 16th Mechatronika 2014, Brno, Brno University of Technology), p. 499-502), ISBN 978-80-214-4817-9
Anotace:
Technical textile materials can be successfully used also as a protection against external electromagnetic field. There are available technologies to improve the material surface – with use of different (galvanize, plate, etc.) technologies. The paper deals with woven textiles – compound of cotton, polyester and conductive fibers. The paper presents the impact of electromagnetic field on special woven textile materials and describes the shielding principles. The measurement technique used at FEL CTU in Prague is also described and the base measuring technologies are discussed. Nevertheless, the major part of the paper is dedicated to experience of authors with numerical (FE) modeling of shielding textiles and to description of designed and used methodology of FE model evaluation. The numerical results are compared to measurement and to mathematical (Matlab) model results.
DOI:
Typ:
Stať ve sborníku z prestižní konf.

Autoři:
Březina, T.; prof. Ing. Dušan Maga, Ph.D.; Štefek, A.
Publikováno:
2014, ISBN 978-80-214-4817-9
Typ:
Sborník z mezinár. konf. cizojazyčně

Autoři:
Neruda, M.; Vojtěch, L.; Hájek, J.; prof. Ing. Dušan Maga, Ph.D.
Publikováno:
2013, ICMT'13 - Proceedings of the International Conference on Military Technologies, Brno, Univerzita obrany), p. 1331-1338), ISBN 978-80-7231-917-6
Anotace:
Fourth generation (4G) of cellular wireless standards includes small base stations, located at individual buildings as homes or other separated areas, called femtocells. They provide higher transfer rate and level of received signal. These small and low-power cellular base stations can provide a wide-range of military applications – while they can easily be set for closed and from environment isolated areas (or buildings) such as headquarters, ships, airplanes, trains etc. [1]. This technology allows to extend service coverage indoors or at the edges where direct access would be unavailable or limited. The safe and secure internal communication and data exchange channels are offered with possibility of external (internet) connection. Several standards bodies, such as 3GPP, WiMAX Forum, and IEEE 802.16, have started to develop standard solutions to enable and optimize femtocells operation [2]. Despite of possible advantages of WiMAX solution [3] the whole technology is solved by 3GPP group, including emergency call cases. However, they are not described and published in deep detail for close subscriber group (CSG). The paper focuses on proposal of two control procedures which allow an access to CSG in the case of emergency calls.
Typ:
Stať ve sborníku z mezinár. konf. cizojazyčně

Autoři:
Pavlíková, S.; prof. Ing. Dušan Maga, Ph.D.; Šimák, B.
Publikováno:
2013, Communications, 15 (2A), p. 118-123), ISSN 1335-4205
Anotace:
The base of electric circuit analysis is often set up on numerical methods. When taking a look into the principle of any numerical method, a matrix calculus always rises out. The larger the problem is, the larger is the size of the matrix, representing the logical structure of the solved problem. The problem (especially from the mathematical point of view) is in acquiring the inverse matrix, which can be solved with some of a large scale of available numerical (or analytical; based on the size of matrixes) methods. This paper shows another possible approach to obtaining the inverse matrix. The graph theory has already been successfully used to invert the matrixes; although, the idea of evaluating the alternating paths, presented by authors, is completely new and had not been used before. The utilization of the designed procedure is demonstrated on a part of an analogue signal processing filter. This technology gives a new tool to software designers and could speed up the numerical solutions; or, in case of impossible analytical and/or diverge numerical technique can lead to a successful and reasonable solution.
Typ:
Článek v periodiku excerpovaném databází Scopus

Autoři:
prof. Ing. Dušan Maga, Ph.D.; Šimák, B.
Publikováno:
2012, Valsag es novekedes, Tatabánya, Edutus College), p. 43-52), ISBN 978-963-8445-34-6
Anotace:
"Crisis and Progress" is the head-line of the upcoming conference in Tatabanya, Hungary. Maybe these terms are originally focused on recent processes passing through the industry and economics; nevertheless, they are very up-to-date even in the sphere of university education. This paper gives brief information about trends and recent situation in ranking the scientific outputs in the Czech Republic and gives an overview on university activity focused on cooperation between the Faculty of Electrical Engineering (FEE), Czech Technical University (CTU) in Prague, and secondary schools in the republic.
Typ:
Vyzvaná předn. uvedená ve sborníku z mezinárodní konf.

Autoři:
Pavlikova, S.; prof. Ing. Dušan Maga, Ph.D.; Šimák, B.
Publikováno:
2012, Proceedings of 9th International Conference Elektro 2012, Žilina, Žilinská universita, Elektrotechnická fakulta), p. 443-447), ISBN 978-1-4673-1178-6
Anotace:
The matrix calculus is very frequently used in electrical engineering to calculate the different parameters of (but not only) electric circuits. One of the most important points of mathematical background of this analysis is the calculation of inverse matrix. This can be realised by numerous well-known algebraic methods (unit/identity matrix, different algebraic supplements, etc.) or numerical techniques. Inverting of matrixes is a well-known method; nevertheless, idea of alternating paths (presented in the paper) is completely new and unpublished. The electric circuit can be represented in the form of a graph and this graph structure rewritten into the form of matrixes. The paper shows the inverse matrix acquisition without using any algebraic technique - directly from graph structure. The presented technology can further be used as an input for any numerical method used for circuit parameters analysis or on- and off-line simulation. Practically, this is based on the following steps: the electric circuit is transformed into the graph structure. A new graph structure is created using the presented algorithm. The matrix system describing this graph structure, obtained without use of any conventional technique, is the inverse matrix of the original graph. The proposed utilization of alternative paths essentially differs from work of other authors.
Typ:
Stať ve sborníku z mezinár. konf.

Autoři:
Turygin, Y. V.; Zubkova, J. V.; prof. Ing. Dušan Maga, Ph.D.
Publikováno:
2012, Proceedings of 15th Mechatronika 2012, Praha, Czech Technical University in Prague), p. 351-353), ISBN 978-80-01-04987-7
Anotace:
The paper presents the mathematical model of controlling the positioning process of the output element of the mechatronic motion module based on determining the value of kinematic component of the error for a mechatronic system of the automated manufacturing complex. The obtained value allows correcting the output element position when executing the trajectory up to the assigned accuracy in real time.
Typ:
Stať ve sborníku z mezinár. konf. cizojazyčně

Autoři:
prof. Ing. Dušan Maga, Ph.D.; Pavlikova, S.
Publikováno:
2012, Cybernetic letters, 10 (1), p. 1-10), ISSN 1802-3525
Anotace:
The basic ideas, as well as the possible way of technical interpretation of the Principle of Minimal Energy Effect are presented in the paper, followed by practical examples. Based on these the reader will be able to follow the principle and build an understandable theory on professional numerical methods basics, theirs possible advantages and disadvantages and shortcomings. The main idea presented in the paper is based on very simple example - motion in the gravitational field of the earth. The paper is based on one presented during 6th Advances in Mechatronics 2011 in Brno, fulfilled with detailed results of authors yet unpublished.
Typ:
Článek v periodiku z pozitivního seznamu RVVI cizojazyčně

Autoři:
prof. Ing. Dušan Maga, Ph.D.; Štefek, A.; Březina, T.
Publikováno:
2012, ISBN 978-80-01-04987-7
Typ:
Sborník z mezinár. konf. cizojazyčně

Autoři:
prof. Ing. Dušan Maga, Ph.D.; Ďuďák, J.; Pavliková, S.; Hájek, J.; Šimák, B.
Publikováno:
2012, Proceedings of 15th Mechatronika 2012, Praha, Czech Technical University in Prague), p. 195-198), ISBN 978-80-01-04987-7
Anotace:
The unique project based on cooperation of universities and primary or secondary schools is transformed to Czech Republic. The project, realized at Czech Technical University in Prague, Faculty of Electrical Engineering is focused on support of technical education and knowledge between primary and secondary schools' students (and teachers). The main idea is based on "Engineer Olympics" realized at Faculty of Mechanical Engineering, STU in Bratislava [1], and "Technical Olympics - Science-Research-Development" realized at Faculty of Mechatronics in Trencin, Slovakia (both projects started at 2008), and project "Science-Research-Development in a View of Children".
Typ:
Stať ve sborníku z mezinár. konf. cizojazyčně

Autoři:
prof. Ing. Dušan Maga, Ph.D.; Pavlíková, S.
Publikováno:
2011, International Symposium Advances in Mechatronics 2011, Brno, Univerzita obrany, Fakulta vojenských technologií), p. 27-34), ISBN 978-80-7231-847-6
Anotace:
The Minimal Energy Effect (MEE) is a fundamental concept valid in physics, chemistry, biology, and engineering (but also in human oriented sciences). The bases of MEE have been introduced by authors during Mechatronika 2011. The problem of MEE is now presented in more detailed view, when the mesh procedure is generalized and the task is formalized as a variational problem with n degrees of freedom.
Typ:
Stať ve sborníku z prestižní konf.

Autoři:
Dudak, J.; Gaspar, G.; prof. Ing. Dušan Maga, Ph.D.; Pavlikova, S.
Publikováno:
2011, Mechatronics Recent Technological and Scientific Advances, Heidelberg, Springer), p. 499-506), ISBN 978-3-642-23243-5
Anotace:
With arise of modern interdisciplinary subjects as mechatronics; a huge demand for new technologies in education appears. The today's technology offers a interactive approach, open and free knowledge based form. One of the offered technologies is created by authors - portal Kiwiki, specialized in mechatronics.
Typ:
Stať ve sborníku z prestižní konf.

Autoři:
prof. Ing. Dušan Maga, Ph.D.; Zagirnyak, M.; Miljavec, D.
Publikováno:
2010, Proceedings of the 14th EPE-PEMC Conference 2010, Skopje, International Council on Large Electric Systems Macedonian National Commitee), p. S412-S413), ISBN 978-1-4244-7854-5
Anotace:
The aim of the paper is to analyze the additional Joules losses in permanent magnets. The stator slot openings gives rise to changes in the magnetic flux density in permanent magnets (PM) of the rotor brush-less directcurrent (BLDC) machine while the machine is rotating. The final consequence of these changes are induced eddy currents in PM and further additional power losses. The 3- D time-stepping finite-element analysis is used to analyze this phenomenon. The induced eddy-current distribution in PM and the resulting power losses are calculated at different number of permanent magnet axial segmentation.
DOI:
Typ:
Stať ve sborníku z mezinár. konf.

Autoři:
Turygin, Y.; prof. Ing. Dušan Maga, Ph.D.; Faitova, N.
Publikováno:
2010, Mechatronika 2010, Trenčín, Trenčianská univerzita Alexandra Dubčeka v Trenčíně), p. 112-115), ISBN 978-80-8075-457-0
Anotace:
Mechatronic system's service model on a base of its elements reliability level estimation is offered. The application of an adaptive structure for repair cycle creates the base for organization of predictive maintenance and operational effectiveness increasing for mechatronic systems,
Typ:
Stať ve sborníku z mezinár. konf.

Autoři:
prof. Ing. Dušan Maga, Ph.D.; Tkáč, J.
Publikováno:
2010, ISBN 978-80-8075-457-0
Typ:
Sborník z mezinár. konf.

Autoři:
prof. Ing. Dušan Maga, Ph.D.; Sitar, J.; Bauer, P.
Publikováno:
2009, RECENT ADVANCES IN MECHATRONICS: 2008-2009, Heidelberg, Springer), p. 281-286), ISBN 978-3-642-05021-3
Anotace:
The paper gives a detailed view on three laboratories of electromechanical actuators operated within the frames of 18 modules based on Edipe project. The project has been realized with cooperation of 13 partners located in 11 different European countries as a Leonardo da Vinci II pilot project. The project is available at www.PEMCWebLab.com. PEMCWebLab offers a set of remotely controlled real and virtual experiments from fields of electrical engineering mainly from power electronics, electrical drives and motion control. The brief overview on project can also be found in The Parliament Magazine.
Typ:
Stať ve sborníku z mezinár. konf.

Autoři:
prof. Ing. Dušan Maga, Ph.D.; Sitár, J.; Ďuďák, J.; Harťanský, R.; Široký, P.; Halgoš, J.; Bauer, P.
Publikováno:
2008, Proceedings of 13th EPE-PEMC, New York, IEEE), p. 2399-2401), ISBN 978-1-4244-1742-1
Anotace:
Faculty of Mechatronics (FM TnUAD), as one of EDIPE (Leonardo da Vinci) project partners, has built a laboratory of electromechanical actuators, controlled and measured by available web services. The recent state in electromechanical actuators Web-Lab will be presented at paper. The used control technology, as well as the measuring equipment and technologies, will be described and discussed. Also the very first experience with designed technology will be presented with special attention paid to viewpoint of end-user and laboratory staff. The basic ides of booking systems, developed by University of Maribor, and its connection to laboratories in Trencin are presented as well.
Typ:
Stať ve sborníku z mezinár. konf.

Autoři:
Bauer, P.; Ďuďák, J.; prof. Ing. Dušan Maga, Ph.D.; Hájek, V.
Publikováno:
2007, International Journal of Engineering Education, 23 (6), p. 1210-1218), ISSN 0949-149X
Anotace:
Virtual and distance laboratories extend the application area of the web. This leads to an openly integrated environment which facilitates the sharing of not only educational material but also hardware and software resources. This paper investigates distance learning with particular attention to experimental Work. DelftWebLab provides the user with a practical experience in Power Electronic education. It was designed based on cutting-edge ideas and had clear targets.
Typ:
Článek v periodiku excerpovaném SCI Expanded

Autoři:
Siroky, P.; prof. Ing. Dušan Maga, Ph.D.; Petrilak, J.
Publikováno:
2007, INTERNATIONAL CONFERENCE ON MILITARY TECHNOLOGIES, Brno, Univerzita Obrany), p. 434-440), ISBN 978-80-7231-238-2
Anotace:
This paper includes some possibilities how to solve problems with the improvement of systems reliability on the field where traditional methods of EMC are not sufficient. Two basic types of methods will be introduced. First, methods of software redundancy and,second methods of time redundancy will be presented. Then Two Rail Logic will be presented for increasing reliability of system.
Typ:
Stať ve sborníku z mezinár. konf. cizojazyčně

Autoři:
Fabo, P.; Siroka, A.; prof. Ing. Dušan Maga, Ph.D.; Siroky, P.
Publikováno:
2007, Przeglad Elektrotechniczny, 83 (11), p. 79-80), ISSN 0033-2097
Anotace:
The interactive simulator is presented in this paper. The main emphasis is put on methods of simulation implemented into this simulator platform. Three kinds of simulation methods will be described. The first method is discrete simulation in real time or virtual time, the second is simulation controlled by events and the last is single-step and multi-step method.
Typ:
Článek v periodiku excerpovaném SCI Expanded

Autoři:
prof. Ing. Dušan Maga, Ph.D.; Sitár, J.; Ďuďák, J.
Publikováno:
2007, Proceedings of 10th International Symposium on Mechatronics "Mechatronika 2007", Trenčín, Alexander Dubček University of Trenčín), p. 107-112), ISBN 978-80-8075-210-1
Anotace:
The paper is deals with design and construction of virtual laboratory of electrical machines as asynchronous motor, DC motor and derivative motor. The main idea of this equipment is bring closer the area of study in electrical engineering with helps of modern information systems.
Typ:
Stať ve sborníku z mezinár. konf.

Autoři:
Bauer, P.; prof. Ing. Dušan Maga, Ph.D.; Sitar, J.; Dudak, J.; Hartansky, R.
Publikováno:
2007, 38th Annual IEEE Power electronics specialists conference: Power electronics education workshop PEEW07, Pistacaway, NJ, IEEE Power & Energy Society)
Typ:
Stať ve sborníku z mezinár. konf.

Autoři:
Bauer, P.; Ďuďák, J.; prof. Ing. Dušan Maga, Ph.D.
Publikováno:
2006, 12th International Power Electronics and Motion Control Conference, Maribor, University of Maribor), p. 2111-2117), ISBN 1-4244-0121-6
Anotace:
Virtual and distance laboratories extend the application area of the web, which leads to an openly integrated environment for sharing teaching and learning materials and hardware and software resources. In this paper distance learning and in particular the experiments are investigated. DelftWebLab for a practical experience in Power Electronic education is designed as a project with leading idea and clear targets.
Typ:
Stať ve sborníku z mezinár. konf.

Autoři:
prof. Ing. Dušan Maga, Ph.D.; Halgoš, J.; Lahučký, D.
Publikováno:
2006, Journal of Theoretical and Applied Mechanics, 36 (9), p. 3-16), ISSN 0861-6663
Anotace:
The presented paper deals with computer based model of mechatronic actuator - high torque low speed step motor. The paper presents especially the possible ways of torque computation and theirs accuracy. This actuator has been designed and constructed according to the special demands - extremely low speed and high static torque. Since the speed can be controlled by actuator construction, the torque depends on a lot of additional parameters and can be influenced by eg current supply size and case, tooth and slot sizes etc. One of the most important knowledge, suitable for a lot of authors, solving similar problems, is the choice of proper torque computation method with required accuracy of obtained results.
Typ:
Článek v odborném recenzovaném periodiku

Autoři:
prof. Ing. Dušan Maga, Ph.D.; Řeřucha, V.; Halgoš, J.
Publikováno:
2006, Cybernetic letters, 4 (4), ISSN 1802-3525
Anotace:
This paper deals with hightorque stepper machine - Megatorque problems. Basic characteristics and parameters of given electrical machine are described in this paper. Following its parameters 3-D model was created. We have used program ANSYS in creating 3-D model and analysis of magnetic field in hightorque stepper machine. The program is working on Final Elements Method principles. For better solution we have designed only a part of the model by one sixth due to the machine's symmetry. In the article are introduced ways how to describe results of magnetic field distribution.
Typ:
Článek v odborném recenzovaném periodiku cizojazyčně

Autoři:
prof. Ing. Dušan Maga, Ph.D.; Harťanský, R.
Publikováno:
2006, ISBN 80-7231-130-1
Anotace:
Kniha je venovaná numerickým riešeniam elektromechanických úloh - MKD, MHP najmä však MKP.
Typ:
Jiná kniha česky

Autoři:
prof. Ing. Dušan Maga, Ph.D.; Hartansky, R.; Manas, P.
Publikováno:
2006, Advances in Military Technology, 1 (2), p. 53-66), ISSN 1802-2308
Anotace:
The paper is based on previous work of the authors, presented e.g. in [1]. The area of authors' interests is based on numerical solutions of electrical, magnetic or mechanical fields. The well known numerical methods are Finite Elements and Boundary Elements. Application of these can be successfully done in special technologies or special equipment as hightorque lowspeed machine suitable for manipulators or robots working in dangerous and aggressive environment, highspeed bearingless actuators designed for aggressive and explosive surroundings, as well as design and optimization of bridges, pontoons, etc. The bases of the Finite Element Method (FEM) and overview of the authors' most important results in this field of interest is presented in the following chapters. The used mathematical apparatus leads to identical a compatible results which are independent from the used platform of computer application software.
Typ:
Článek v odborném recenzovaném periodiku cizojazyčně

Autoři:
prof. Ing. Dušan Maga, Ph.D.; Harťanský, R.; Straka, M.; Halgoš, J.; Engler, M.
Publikováno:
2003, ISTET'2003, Warsaw University of Technology), p. 409-412), ISBN 83-916444-1-3
Anotace:
One part of education process for students of mechatronics, within the scope of modern computer based field computation methods (Finite elements) is presented in the paper. The possible problems and difficulties can be seen when building the system manually. Also the influence of mesh quality on obtained results is discussed.
Typ:
Stať ve sborníku z mezinár. konf.

Autoři:
prof. Ing. Dušan Maga, Ph.D.; Halgoš, J.; Straka, M.; Engler, M.
Publikováno:
2003, Proceedings of 6th International Symposium on Mechatronics, Bratislava, Slovak University of Technology), p. 54-57), ISBN 80-88914-92-2
Anotace:
Using a powerful computer technique, a lot numerical methods, based on set of partial differential equation solution, has been recently developed. One of the most expanded is the Finite element method (FEM). Using a computer to optimise the design and structure of any industrial application is the way to spare time, money and time consuming set of practical tests. Within the scope of mechatronic actuating devices, the mayor attention has to be paid to optimisation of output power/volume ratio.
Typ:
Stať ve sborníku z mezinár. konf.

Autoři:
prof. Ing. Dušan Maga, Ph.D.
Publikováno:
2002, ISBN 80-88914-59-0
Anotace:
Skriptum obsahuje návoda na laboratórne cvičenia pre elektrické stroje točivé. Zamerané je na vybrané merania na asynchrónnom stroji, selsynoch a na merania na synchrónnom stroji.
Typ:
Vysokoškolské skriptum v češtině

Autoři:
prof. Ing. Dušan Maga, Ph.D.; Harťanský, R.
Publikováno:
2001, ISBN 80-88914-29-9
Anotace:
Kniha sa zaoberá numerickými metódami riešenia elektromechanických úloh - Galerkinova globálna metóda, MKP, MHP, MKD, momentova metóda
Typ:
Vědecká kniha česky

Autoři:
prof. Ing. Dušan Maga, Ph.D.; Wagner, J.
Publikováno:
1999, EE - Odborný časopis pre elektrotechniku a energetiku, 5 (mimoriadne), p. 77-79), ISSN 1335-2547
Anotace:
Článok sa zaoberá numerickýmu metódami riešenie elektromagnetických polí so špeciálnym zreteľom na MKP a elektrické stroje točivé.
Typ:
Článek v odborném recenzovaném periodiku česky

Autoři:
prof. Ing. Dušan Maga, Ph.D.; Wagner, J.
Publikováno:
1998, COMPEL, 17 (1-3), p. 364-368), ISSN 0332-1649
Anotace:
A prototype of a special electrical machine-double statored switched reluctance motor has been developed which produces a very high static and dynamic torque. Possible ways of measuring the machine are presented. The basic parameters of the model are described. Results are compared to those obtained by computer design. A difference between computed and measured results is discussed.
Typ:
Článek v periodiku excerpovaném SCI Expanded

Autoři:
Wagner, J.; prof. Ing. Dušan Maga, Ph.D.
Publikováno:
1996, 9th EDPE, International Conference Electrical Drives and Power Electronics, p. 31-34)
Anotace:
In our paper we deal with a special kind of a switched reluctance motor - double statored step motor. Now we are going to present our latest results - the static torque evaluation. The torque evaluation is based on FEM magnetic field solution. We have used three different methods to obtain the static torque after the scalar potential solution. The models are supplied in single phase as well as in two phases. We will also present the influence of the mesh quality on static torque FEM based computation.
Typ:
Stať ve sborníku z mezinár. konf. cizojazyčně

Autoři:
Wagner, J.; prof. Ing. Dušan Maga, Ph.D.
Publikováno:
1996, Proceedings of International Conference Electrical Drives and Power Electronics EDPE 96, p. 227-230)
Anotace:
The task of the hightorque lowspeed stepmotor magnetic field analysis is discussed in the paper. This Analysis is based on the Finite Element Method magnetic field solution. The main aspect of our design is the motor torque evaluation. Three different methods are used to obtain torque values (the Maxwell Stress Tensor method, the Coenergy method and the Arkkio's method).
Typ:
Stať ve sborníku z mezinár. konf. cizojazyčně

Autoři:
Wagner, J.; prof. Ing. Dušan Maga, Ph.D.; Ort-Šnep, R.
Publikováno:
1995, COMPEL, 14 (4), p. 129-132), ISSN 0332-1649
Anotace:
In spite of authors' previous results, where the simplified 2D model has been investigated, the results coming out from real motor geometry are presented. Finite Element Method is used to solve the magnetic field of real cross-section of hightorque stepping motor. This allows to analyze the influence of multophase supply.
DOI:
Typ:
Článek v periodiku excerpovaném SCI Expanded

Autoři:
Wagner, J.; Hájek, V.; Fuhrichová, R.; prof. Ing. Dušan Maga, Ph.D.; Guba, R.; Opaterný, J.
Publikováno:
1994, COMPEL, 13 (1), p. 145-148), ISSN 0332-1649
Anotace:
The magnetic field of the DC machine is analysed in the paper by means of Finite Element Method (FEM)
Typ:
Článek v periodiku excerpovaném SCI Expanded

Autoři:
Wagner, J.; prof. Ing. Dušan Maga, Ph.D.; Fuhrichová, R.; Guba, R.; Opaterný, J.
Publikováno:
1994, COMPEL, 13 (1), p. 137-139), ISSN 0332-1649
Anotace:
In our contribution we deal with the optimization of the magnetic circuit design of the high torque step motor by numerical solution of the motor magnetic field (the Finite Elements Method - FEM) and with the solution of some electrical parameters of this motor and we introduce the methodology of optimization of the motor size from the parameters dependant.
Typ:
Článek v periodiku excerpovaném SCI Expanded