91 research outputs found
Optimization of two-controller switchings for LTI plants
No full textIn this paper we propose procedures to evaluate switching times, controller resets and vanishing feedforward terms when two linear controllers can be switched in order to optimize a quadratic cost function of the closed-loop system response in case of linear plants. Numerical and closed-form solutions are provided. Simulation results are presented to show the effectiveness of the proposed strategies
Szacowanie prędkości pojazdów na podstawie obrazu z kamery = Estimating vehicle speed based on image from camera
No full textRajs Arkadiusz, Goździewska-Nowicka Agnieszka, Banaszak-Piechowska Agnieszka, Gospodarczyk Jacek. Szacowanie prędkości pojazdów na podstawie obrazu z kamery = Estimating vehicle speed based on image from camera. Journal of Education, Health and Sport. 2016;6(4):122-126. eISSN 2391-8306. DOI http://dx.doi.org/10.5281/zenodo.49880
http://ojs.ukw.edu.pl/index.php/johs/article/view/3456
The journal has had 7 points in Ministry of Science and Higher Education parametric evaluation. Part B item 755 (23.12.2015).
755 Journal of Education, Health and Sport eISSN 2391-8306 7
© The Author (s) 2016;
This article is published with open access at Licensee Open Journal Systems of Kazimierz Wielki University in Bydgoszcz, Poland
Open Access. This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium,
provided the original author(s) and source are credited. This is an open access article licensed under the terms of the Creative Commons Attribution Non Commercial License
(http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted, non commercial use, distribution and reproduction in any medium, provided the work is properly cited.
This is an open access article licensed under the terms of the Creative Commons Attribution Non Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted, non commercial
use, distribution and reproduction in any medium, provided the work is properly cited.
The authors declare that there is no conflict of interests regarding the publication of this paper.
Received: 20.03.2016. Revised 17.04.2016. Accepted: 17.04.2016.
SZACOWANIE PRĘDKOŚCI POJAZDÓW NA PODSTAWIE OBRAZU Z KAMERY
ESTIMATING VEHICLE SPEED BASED ON IMAGE FROM CAMERA
dr inż. Arkadiusz Rajs
Uniwersytet Technologiczno-Przyrodniczy im. Jana i Jędrzeja Śniadeckich w Bydgoszczy, Wydział Telekomunikacji, Informatyki i Elektrotechniki,
Zakład Teletransmisji, Al. Prof. S. Kaliskiego 7, 85-790 Bydgoszcz, [email protected]
dr Agnieszka Goździewska-Nowicka
Uniwersytet Technologiczno-Przyrodniczy im. Jana i Jędrzeja Śniadeckich w Bydgoszczy, Wydział Zarządzania, Katedra Organizacji i Zarządzania,
ul. Fordońska 430, 85-790 Bydgoszcz, [email protected]
dr Agnieszka Banaszak-Piechowska
Uniwersytet Kazimierza Wielkiego w Bydgoszczy
Instytut Fizyki, ul. Weyssenhoffa 11, 85-090 Bydgoszcz, [email protected]
dr inż. Jacek Gospodarczyk
Wyższa Szkoła Gospodarki w Bydgoszczy
Instytut Informatyki i Mechatroniki
Garbary 2,85-229 Bydgoszcz, [email protected]
Streszczenie
Praca prezentuje sposób oszacowania prędkości poruszających się pojazdów.
Opisano metodę opartą na analizie obrazu oraz przedstawiono wyniki pomiarów.
Abstract
This Work presents a way to estimate the speed of the moving vehicles.
Describes a method based on image analysis, and shows the results of the measurements.
Słowa kluczowe: analiza obrazu, prędkość pojazdów, systemy wizyjne.
Key words: image analysis, machine vision systems, vehicle speed
Methodology and applications of eyetracking
No full textRajs Arkadiusz, Aleksiewicz Mariusz, Banaszak-Piechowska Agnieszka, Gospodarczyk Jacek. Methodology and applications of eyetracking. Journal of Education, Health and Sport. 2016;6(4):115-121. eISSN 2391-8306. DOI http://dx.doi.org/10.5281/zenodo.49872
http://ojs.ukw.edu.pl/index.php/johs/article/view/3455
The journal has had 7 points in Ministry of Science and Higher Education parametric evaluation. Part B item 755 (23.12.2015).
755 Journal of Education, Health and Sport eISSN 2391-8306 7
© The Author (s) 2016;
This article is published with open access at Licensee Open Journal Systems of Kazimierz Wielki University in Bydgoszcz, Poland
Open Access. This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium,
provided the original author(s) and source are credited. This is an open access article licensed under the terms of the Creative Commons Attribution Non Commercial License
(http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted, non commercial use, distribution and reproduction in any medium, provided the work is properly cited.
This is an open access article licensed under the terms of the Creative Commons Attribution Non Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted, non commercial
use, distribution and reproduction in any medium, provided the work is properly cited.
The authors declare that there is no conflict of interests regarding the publication of this paper.
Received: 05.03.2016. Revised 10.04.2016. Accepted: 10.04.2016.
METHODOLOGY AND APPLICATIONS OF EYETRACKING
dr inż. Arkadiusz Rajs
Institute of Telecommunications and Computer Science, University of Science andTechnology,
Al. Prof. S. Kaliskiego 7, 85-796 Bydgoszcz, [email protected]
dr inż. Mariusz Aleksiewicz
Institute of Telecommunications and Computer Science, University of Science and Technology,
Al. Prof. S. Kaliskiego 7, 85-796 Bydgoszcz,, [email protected]
dr Agnieszka Banaszak-Piechowska
Institute of Physics, Faculty of Mathematics, Physics and Technique Science, Kazimierz Wielki University,
85-052 Bydgoszcz, Powstanców Wlkp. 2, [email protected]
dr inż. Jacek Gospodarczyk
Institute of Computer Science and Mechatronics, University of Economy,
Garbary 2,85-229 Bydgoszcz, [email protected]
Summary
Eyetracking gives great capability of computer’s systems control and study of usability applications. In this paper we show construction of eyetracker and range of applications
Performance-based controller switching: An application to plasma current control at FTU
No full textIn this paper we derive state-dependent switching conditions to optimize closed-loop (transient) performance of switching controllers for linear time invariant plants. The methodology is applied to plasma current control at Frascati Tokamak Upgrade (FTU) facility to improve steady-state and transient response. Further simulation results are presented to show the effectiveness of the proposed switching controller
Control-oriented model of disruption generated RE beam at FTU
No full textIn this paper control-oriented dynamical models of current, horizontal and vertical displacement for Runaway Electrons (RE) beam in the plateau phase are presented. The dynamical models were obtained through gray-box identification techniques on experimental data collected on post-disruptive RE beam shots in the Frascati Tokamak Upgrade (FTU). Based on the identified models, the design of simple robust controllers to improve RE beam mitigation strategies is proposed and simulations results are provided
On the measurement of the threshold electric field for runaway electron generation in the Frascati Tokamak Upgrade
No full textExperiments have been carried out to evaluate the threshold electric field for runaway generation during the flat-top phase of ohmic discharges in the Frascati Tokamak Upgrade tokamak. An investigation of the conditions for runaway electron generation and suppression has been performed for a wide range of plasma parameter values. The measured threshold electric field is found to be significantly larger (similar to 2 - 5 times) than predicted by the relativistic collissional theory of runaway generation, E-R = n(e) e(3) ln Lambda/4 pi e(0)(2) m(e) c(2), and can be explained to a great extent by an increase of the critical electric field due to the effect of the electron synchrotron radiation losses. These findings are consistent with the results of an ITPA joint experiment to study the onset, growth, and decay of relativistic runaway electrons [Granetz et al., Phys. Plasmas 21, 072506 (2014)]. Confirmation of these results for disruptions with high electric field might imply significantly lower requirements on electron densities for suppression and prevention of runaway formation in ITER.This work was carried out with financial support from Dirección General de Investigación, Científica y Técnica, Project No. ENE2012-31753 (MINECO; Spain).Publicad
Runaway electron dynamics and critical electric field for runaway generation in the FTU tokamak
No full textModelowanie i symulacja ładowania węgla przez ślimakowy organ urabiający w niskich pokładach
No full textThis paper presents a methodology for modeling work of a coal shearer work in low longwall coal seams where the wall height does not exceed 1.5 m. In such conditions, an important issue is the process of loading the ore from shearer cutting drum on an armored face conveyor and selection of appropriate kinematic parameters to avoid choking. Discrete element method was used to model coal seam. This method allows for efficient simulation of physical systems composed of many separate components. Methods and algorithms based on existing theoretical models were developed to imitate coal cutting process. Main focus of analysis was put on coal stream movement for different variants of the shearer construction and kinematic parameters.W artykule przedstawiono metodykę modelowania pracy kombajnu ścianowego w niskich pokładach węglowych, w których wysokość ściany nie przekracza 1,5 m. W takich warunkach, istotnym problemem jest proces ładowania urobku na współpracujący z kombajnem przenośnik zgrzebłowy i dobór parametrów kinematycznych tak, aby nie doszło do zadławienia się organu. Ma to szczególne znaczenie w wyrobiskach niskich gdzie tak zwana furta ładowania jest wymiarowo/gabarytowo ograniczona. Do zamodelowania calizny wykorzystana została metoda elementów dyskretnych, pozwalająca na efektywne odzwierciedlenie układów fizycznych składających się z wielu odrębnych elementów. Opracowano metody i algorytmy pozwalające na imitację urabiania w oparciu o istniejące modele teoretyczne a główny nacisk położono na analizę ruchu strugi odspojonego urobku dla różnych wariantów pracy kombajnu i parametrów kinematycznych
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