Pub Date : 2020-12-02DOI: 10.1109/ME49197.2020.9286600
P. Volf, Kristýna Bernášková, J. Hejda, A. Francová, P. Kutílek, J. Hýbl, Michaela Hourova
The aim of the article is to describe the design of a car simulator for clinical or rehabilitation facilities for patients after acquired brain injury who are interested in returning to driving a car. The article describes the HW and SW design. The driving skills recording subsystem and the biotelemetry subsystem is also described, as well as data evaluation methods for determining the parameters of patients’ driving skills evaluation.
{"title":"Car Simulator for Selection and Screening of Patients After Brain Injury","authors":"P. Volf, Kristýna Bernášková, J. Hejda, A. Francová, P. Kutílek, J. Hýbl, Michaela Hourova","doi":"10.1109/ME49197.2020.9286600","DOIUrl":"https://doi.org/10.1109/ME49197.2020.9286600","url":null,"abstract":"The aim of the article is to describe the design of a car simulator for clinical or rehabilitation facilities for patients after acquired brain injury who are interested in returning to driving a car. The article describes the HW and SW design. The driving skills recording subsystem and the biotelemetry subsystem is also described, as well as data evaluation methods for determining the parameters of patients’ driving skills evaluation.","PeriodicalId":166043,"journal":{"name":"2020 19th International Conference on Mechatronics - Mechatronika (ME)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128023098","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-02DOI: 10.1109/ME49197.2020.9286618
S. German – Galkin, M. Staude
In recent years, hybrid generator set systems have found wide application, especially in the construction of power plants for autonomous facilities, such as motor vehicles, ships and planes. This paper presents analytical and simulation tests of a hybrid power plant system based on a permanent magnet synchronous machine (PMSM) connected to battery operating in a DC network. As a result of the tests, energy and electromagnetic characteristics of such a power plant were obtained at variable PMSM speed and variable load. The characteristics obtained for the non-optimized system showed the amount of energy losses that increased significantly with the power of the power plant. Therefore, a method of energy optimization of such a power plant was proposed and a system control algorithm was developed and proven in simulation tests. The results of the research presented in this paper confirmed the effectiveness of the proposed solution.
{"title":"Energy properties of a hybrid DC generator with PMSM","authors":"S. German – Galkin, M. Staude","doi":"10.1109/ME49197.2020.9286618","DOIUrl":"https://doi.org/10.1109/ME49197.2020.9286618","url":null,"abstract":"In recent years, hybrid generator set systems have found wide application, especially in the construction of power plants for autonomous facilities, such as motor vehicles, ships and planes. This paper presents analytical and simulation tests of a hybrid power plant system based on a permanent magnet synchronous machine (PMSM) connected to battery operating in a DC network. As a result of the tests, energy and electromagnetic characteristics of such a power plant were obtained at variable PMSM speed and variable load. The characteristics obtained for the non-optimized system showed the amount of energy losses that increased significantly with the power of the power plant. Therefore, a method of energy optimization of such a power plant was proposed and a system control algorithm was developed and proven in simulation tests. The results of the research presented in this paper confirmed the effectiveness of the proposed solution.","PeriodicalId":166043,"journal":{"name":"2020 19th International Conference on Mechatronics - Mechatronika (ME)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123346239","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-02DOI: 10.1109/ME49197.2020.9286467
J. Dušek, J. Mikulka
The paper discusses experimental measurement, simulation, validation, and reconstruction of complex admittivity, with all of the steps performed by utilizing electrical impedance tomography. After a brief introduction, the main aspects of the research are characterized, including the principle of the forward problem, in which the complete electrode model is embedded; the basics of the inverse problem, comprising an objective function solved with the Gauss-Newton method; and the impact of the objective function’s regularization. The 8-electrode measuring configuration and the simulation environment are described in detail, as they facilitate the reconstruction process. The experiment-related portion of the paper outlines the measured voltages and phases for the homogeneous and inhomogeneous admittivity distribution inside the tomograph. Based on the measurement results, we reconstructed the image of the real and imaginary parts of the admittivity, using the EIDORS library to support the procedure. The obtained components were evaluated and compared with the actual position of the inserted object. The final images show that the determinability of the inhomogeneity position has generally improved through exploiting the real part of the complex admittivity; simultaneously, however, the stability of the imaginary part has visibly decreased.
{"title":"Electrical Impedance Tomography-Based Spatial Reconstruction of Admittivity in a Cylindrical Object","authors":"J. Dušek, J. Mikulka","doi":"10.1109/ME49197.2020.9286467","DOIUrl":"https://doi.org/10.1109/ME49197.2020.9286467","url":null,"abstract":"The paper discusses experimental measurement, simulation, validation, and reconstruction of complex admittivity, with all of the steps performed by utilizing electrical impedance tomography. After a brief introduction, the main aspects of the research are characterized, including the principle of the forward problem, in which the complete electrode model is embedded; the basics of the inverse problem, comprising an objective function solved with the Gauss-Newton method; and the impact of the objective function’s regularization. The 8-electrode measuring configuration and the simulation environment are described in detail, as they facilitate the reconstruction process. The experiment-related portion of the paper outlines the measured voltages and phases for the homogeneous and inhomogeneous admittivity distribution inside the tomograph. Based on the measurement results, we reconstructed the image of the real and imaginary parts of the admittivity, using the EIDORS library to support the procedure. The obtained components were evaluated and compared with the actual position of the inserted object. The final images show that the determinability of the inhomogeneity position has generally improved through exploiting the real part of the complex admittivity; simultaneously, however, the stability of the imaginary part has visibly decreased.","PeriodicalId":166043,"journal":{"name":"2020 19th International Conference on Mechatronics - Mechatronika (ME)","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127495818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-02DOI: 10.1109/ME49197.2020.9286667
J. Krejsa, S. Vechet
The paper deals with the classification of images of Czech sign language alphabet, single handed version in particular, without diacritics. The classification is performed by convolution neural network using TensorFlow computational library. Network topology, data acquisition and automatic labelling and obtained results are described in the paper. The accuracy on the test data - captured images of a person not previously seen by the network – was over 87%.
{"title":"Czech Sign Language Single Hand Alphabet Letters Classification","authors":"J. Krejsa, S. Vechet","doi":"10.1109/ME49197.2020.9286667","DOIUrl":"https://doi.org/10.1109/ME49197.2020.9286667","url":null,"abstract":"The paper deals with the classification of images of Czech sign language alphabet, single handed version in particular, without diacritics. The classification is performed by convolution neural network using TensorFlow computational library. Network topology, data acquisition and automatic labelling and obtained results are described in the paper. The accuracy on the test data - captured images of a person not previously seen by the network – was over 87%.","PeriodicalId":166043,"journal":{"name":"2020 19th International Conference on Mechatronics - Mechatronika (ME)","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122938059","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-02DOI: 10.1109/ME49197.2020.9286720
Š. Janouš, J. Talla, T. Kosan, Z. Peroutka
This paper deals with the control of induction motor drive powered by 3-phase VSI with 3-phase output transformer. The drive configuration using transformer to adjust the voltage level from the converter is common for example in submersive pumps drives or in mining industry where the transmission line is limited to low voltage levels. Another field, where such drive configuration finds its place is in the testing facilities where the converter needs to cover wide portfolio of ac drives from medium voltage to low voltage range. The transformer together with usually long cables and difficult availability of the speed measurement strongly complicates the control design. A common control algorithms are based on open loop voltage per hertz techniques which are very simple and robust however they fails to provide high dynamic performance. In such a case FOC based algorithms may be used, which strongly increases the complexity of the cascade based control design, especially during motor startups, where high demanded torque may easily result in over-saturation of the transformer. In this paper we use popular version of the predictive control FCSMPC using complete model of the drive with the transformer. The resulting control algorithm is very simple and robust while provides high dynamics and effective solution to over-saturation of the transformer even in the low speed operation. The theoretical assumptions are validated by simulations.
{"title":"Predictive control of induction motor drive with transformer","authors":"Š. Janouš, J. Talla, T. Kosan, Z. Peroutka","doi":"10.1109/ME49197.2020.9286720","DOIUrl":"https://doi.org/10.1109/ME49197.2020.9286720","url":null,"abstract":"This paper deals with the control of induction motor drive powered by 3-phase VSI with 3-phase output transformer. The drive configuration using transformer to adjust the voltage level from the converter is common for example in submersive pumps drives or in mining industry where the transmission line is limited to low voltage levels. Another field, where such drive configuration finds its place is in the testing facilities where the converter needs to cover wide portfolio of ac drives from medium voltage to low voltage range. The transformer together with usually long cables and difficult availability of the speed measurement strongly complicates the control design. A common control algorithms are based on open loop voltage per hertz techniques which are very simple and robust however they fails to provide high dynamic performance. In such a case FOC based algorithms may be used, which strongly increases the complexity of the cascade based control design, especially during motor startups, where high demanded torque may easily result in over-saturation of the transformer. In this paper we use popular version of the predictive control FCSMPC using complete model of the drive with the transformer. The resulting control algorithm is very simple and robust while provides high dynamics and effective solution to over-saturation of the transformer even in the low speed operation. The theoretical assumptions are validated by simulations.","PeriodicalId":166043,"journal":{"name":"2020 19th International Conference on Mechatronics - Mechatronika (ME)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116886384","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-02DOI: 10.1109/ME49197.2020.9286661
J. Ulmer, S. Braun, Chi-Tsun Cheng, S. Dowey, J. Wollert
Industry 4.0 imposes many challenges for manufacturing companies and their employees. Innovative and effective training strategies are required to cope with fast-changing production environments and new manufacturing technologies. Virtual Reality (VR) offers new ways of on-the-job, on-demand, and off-premise training. A novel concept and evaluation system combining Gamification and VR practice for flexible assembly tasks is proposed in this paper and compared to existing works. It is based on directed acyclic graphs and a leveling system. The concept enables a learning speed which is adjustable to the users’ pace and dynamics, while the evaluation system facilitates adaptive work sequences and allows employee-specific task fulfillment. The concept was implemented and analyzed in the Industry 4.0 model factory at FH Aachen for mechanical assembly jobs.
{"title":"Gamified Virtual Reality Training Environment for the Manufacturing Industry","authors":"J. Ulmer, S. Braun, Chi-Tsun Cheng, S. Dowey, J. Wollert","doi":"10.1109/ME49197.2020.9286661","DOIUrl":"https://doi.org/10.1109/ME49197.2020.9286661","url":null,"abstract":"Industry 4.0 imposes many challenges for manufacturing companies and their employees. Innovative and effective training strategies are required to cope with fast-changing production environments and new manufacturing technologies. Virtual Reality (VR) offers new ways of on-the-job, on-demand, and off-premise training. A novel concept and evaluation system combining Gamification and VR practice for flexible assembly tasks is proposed in this paper and compared to existing works. It is based on directed acyclic graphs and a leveling system. The concept enables a learning speed which is adjustable to the users’ pace and dynamics, while the evaluation system facilitates adaptive work sequences and allows employee-specific task fulfillment. The concept was implemented and analyzed in the Industry 4.0 model factory at FH Aachen for mechanical assembly jobs.","PeriodicalId":166043,"journal":{"name":"2020 19th International Conference on Mechatronics - Mechatronika (ME)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115641403","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-02DOI: 10.1109/ME49197.2020.9286605
J. Laksar, Zdeněk Raab, R. Pechánek
This paper deals with the design and testing of the independent permanent magnet synchronous generator (PMSG). Maximal speed of the generator is up to 1100 rpm, but the target of the design consists of the highest speed range where the required output power 200 W is achieved. It emphasizes especially the losses analysis and output current limits. The output voltage is rectified to the stabilized DC voltage which increases the power electronics requirements. The limits of the power electronic define the maximal output voltage of the generator.
{"title":"Design of Permanent Magnet Synchronous Generator for a Wide Speed Range","authors":"J. Laksar, Zdeněk Raab, R. Pechánek","doi":"10.1109/ME49197.2020.9286605","DOIUrl":"https://doi.org/10.1109/ME49197.2020.9286605","url":null,"abstract":"This paper deals with the design and testing of the independent permanent magnet synchronous generator (PMSG). Maximal speed of the generator is up to 1100 rpm, but the target of the design consists of the highest speed range where the required output power 200 W is achieved. It emphasizes especially the losses analysis and output current limits. The output voltage is rectified to the stabilized DC voltage which increases the power electronics requirements. The limits of the power electronic define the maximal output voltage of the generator.","PeriodicalId":166043,"journal":{"name":"2020 19th International Conference on Mechatronics - Mechatronika (ME)","volume":"269 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130080252","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-02DOI: 10.1109/ME49197.2020.9286713
J. Sobra, R. Cermák, Patrik Kalaj, T. Komrska
The paper deals with magnetic forces and vibration analysis of a nine-phase induction motor. It is described a method of voltage harmonics injection for reaching either the same amplitude or RMS value of supplying voltage as for the case of supplying the motor using the voltage fundamental only. Influence of the both types of voltage harmonics injection on the magnetic forces and motor vibration is evaluated using finite element analysis and compared to the motor supply by sinusoidal voltage.
{"title":"Vibration Analysis of a Nine-Phase Induction Machine Supplied by Voltage with Harmonics Injection","authors":"J. Sobra, R. Cermák, Patrik Kalaj, T. Komrska","doi":"10.1109/ME49197.2020.9286713","DOIUrl":"https://doi.org/10.1109/ME49197.2020.9286713","url":null,"abstract":"The paper deals with magnetic forces and vibration analysis of a nine-phase induction motor. It is described a method of voltage harmonics injection for reaching either the same amplitude or RMS value of supplying voltage as for the case of supplying the motor using the voltage fundamental only. Influence of the both types of voltage harmonics injection on the magnetic forces and motor vibration is evaluated using finite element analysis and compared to the motor supply by sinusoidal voltage.","PeriodicalId":166043,"journal":{"name":"2020 19th International Conference on Mechatronics - Mechatronika (ME)","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127880912","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-02DOI: 10.1109/ME49197.2020.9286615
V. Venglár, J. Králík, Hong-Liang Chin, Kuo-Shen Chen
A communication infrastructure is an important part of any multi-agent system. This paper introduces a movable Wi-Fi mesh network implementation, while keeping in mind that not all devices are Wi-Fi mesh enabled. The main goal was to experimentally compare the implementation to regular Wi-Fi access point application. The results show that it is possible to use such network, while gaining in operational range. Disadvantages were also found, mainly in response time, but connection could still be held. The resulting system enables usage in both centralized and decentralized manner.
{"title":"Mesh Wi-Fi Infrastructure for Multi-agent Robotic System","authors":"V. Venglár, J. Králík, Hong-Liang Chin, Kuo-Shen Chen","doi":"10.1109/ME49197.2020.9286615","DOIUrl":"https://doi.org/10.1109/ME49197.2020.9286615","url":null,"abstract":"A communication infrastructure is an important part of any multi-agent system. This paper introduces a movable Wi-Fi mesh network implementation, while keeping in mind that not all devices are Wi-Fi mesh enabled. The main goal was to experimentally compare the implementation to regular Wi-Fi access point application. The results show that it is possible to use such network, while gaining in operational range. Disadvantages were also found, mainly in response time, but connection could still be held. The resulting system enables usage in both centralized and decentralized manner.","PeriodicalId":166043,"journal":{"name":"2020 19th International Conference on Mechatronics - Mechatronika (ME)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121136575","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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