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2nd International Conference on Control, Automation and Information Sciences, ICCAIS 2013

作者： Tran, Tri Vu, Truong Nguyen Department of Electrical and Computer Engineering Curtin University Australia Institute of Applied Mechanics and Informatics Vietnam Academy of Science and Technology Viet Nam

ISBN: (纸本)9781479905720

A decentralized cooperative control strategy engaging offline and online computations for constrained multi-agent vehicle systems is presented in this paper. Intermittent data dropouts may incur concurrently to all vehicle agents in this formulation. Demands on communication links and online data are limited with a perturbed state-feedback strategy, which consists of a static cooperative-state feedback and an online-optimizing perturbation. The former compensates for the interagent communication-coupled dynamics. The latter attends to constraints and data losses, adopting only decoupled objective functions. The state feedback gain is determined in accordance with the interconnection topology of the formation, which is described by a directed graph in this paper. The ADC - asymptotically dissipative constraint, is employed in the overriding control strategy of stabilizing agents such that the inter-operability between remote manoeuvres and local autonomous commands becomes practically realizable. The equilibrium-independent supply rate and storage function are used in the stabilizability condition in this development for the final-state tracking of the cooperative formation problem. © 2013 IEEE.

关键词： State feedback

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EEG Analysis of Human Perception based on Video-Audio Stimuli 1

EEG Analysis of Human Perception based on Video-Audio Stimul...

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1st International Conference on Smart Technologies Communication and Robotics, STCR 2021

作者： Manochitra, S. Partheepan, Ravinthiran Kalasalingam Institute of Technology Faculty of Computer Science and Engineering Tamilnadu Virudhunagar India Vytautas Magnus University Faculty of Informatics Master Programme - Applied Informatics Kaunas Lithuania

ISBN: (纸本)9781665418065

Emotions plays a potential role in human computer interaction which are having an obligatory models of cognitive measures. The emotions are dominated by the human physiological communication channels. Those emotions could affect several human activities like learning, decision making, communication, perception, cognitive and so on. Also, some of the emotions are quite difficult to measure and interpret and having difficulty in incorporating them into a technology and design. On the other hand, state of the technologies has enabled us to capture the emotions and integrate them for the use of human computer interaction contexts. This paper delivers an attempt to model the emotions using electroencephalography (EEG). The video stimuli for the two representatives are based on a few negative, positive and neutral contents were shown to volunteers and EEG data was obtained. Further, EEG analysis were experimented and collected about their emotional states with subject's self reports. This study determines that the human emotions could be modelled for affect assessment module or for the usage in human computer interaction and affect based intelligent interactions. © 2021 IEEE.

关键词： Human computer interaction

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Robust control synthesis for a class of distributed parameter systems

Robust control synthesis for a class of distributed paramete...

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15th International Carpathian Control Conference, ICCC 2014

作者： Belavý, Cyril Vitáloš, Filip Vlček, Marcel Šišmišová, Dana Michalečko, Marek Institute of Automation Measurement and Applied Informatics Faculty of Mechanical Engineering Slovak University of Technology Bratislava Nám. slobody 17 812 31 Bratislava Slovakia

ISBN: (纸本)9781479935284

In the paper, the robust control of temperature fields of the casting mould in the benchmark casting plant is presented. Temperature fields of the mould are represented by dynamic models in the form of a finite-dimensional approximation of distributed parameter systems. Models are created by means of an experimental identification. The control synthesis is decomposed to the time and space domain. For the control synthesis with internal model control structure in the time domain, an uncertainty of the controlled system is considered and robust controllers are designed. © 2014 IEEE.

关键词： Robust control

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Robust control of temperature fields in steel casting mould as distributed parameter systems 8

Robust control of temperature fields in steel casting mould ...

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8th IFAC Symposium on Robust Control Design, ROCOND 2015

作者： Belavý, C. Hulkó, G. Bartalský, L. Kubiš, M. Slovak University of Technology in Bratislava Faculty of Mechanical Engineering Institute of Automation Measurement and Applied Informatics Nám. Slobody 17 Bratislava812 31 Slovakia

In the paper, modelling and robust control of temperature fields of the casting mould in the benchmark casting plant is presented. Temperature fields are supposed as distributed parameter systems with dynamic described by partial differential equations. Based on finite element method modelling, models for control synthesis purpose in the form of lumped-input/distributed-output system are created. For this representation, uncertainty of the controlled system was considered and robust control synthesis with internal model control structure was designed. Robust control of the temperature fields in the casting mould was carried out using the Distributed Parameter Systems Blockset for MATLAB & Simulink. © 2015, IFAC (International Federation of Automatic Control) Hosting by Elsevier Ltd. All rights reserved.

关键词： Robust control

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Quality comparison between hybrid regularized exponential forgetting algorithm with alternative covariance matrix and selected standard long-run on-line identification methods of industrial systems 17

Quality comparison between hybrid regularized exponential fo...

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17th Conference on applied Mathematics, APLIMAT 2018

作者： Vachálek, Ján Melicher, Markus Vašek, Pavol Šišmišová, Dana Volenský, Tomáš Institute of Automation Measurement and Applied Informatics Faculty of Mechanical Engineering Slovak University of Technology in Bratislava Nám. slobody 17 Bratislava812 31 Slovakia

ISBN: (纸本)9788022747653

This paper compares the quality of standardly used ON-LINE identification algorithms like directional forgetting and regularized exponential forgetting with the hybrid algorithm of exponential forgetting with an alternative covariance matrix. It points also to the behavior of selected algorithms in different deployment conditions and different run times. Particularly interesting is the long-run deployment, which correlates with use in industry. Based on the results obtained, decisions will be taken about the suitability of the hybrid regularized exponential forgetting algorithm with an alternative covariance matrix for selected industrial deployment scenarios. © 2018 slovak university of technology in Bratislava. All rights reserved.

关键词： Adaptive control Forgetting method Long-run on-line identification Recursive algorithm Time varying parameters

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New possibilities of industrial programming software

New possibilities of industrial programming software

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2013 International Conference on Process Control, PC 2013

作者： Seman, Pavol Juhas, Martin Tkac, Lukas Honek, Marek Institute of Automation Measurement and Applied Informatics Faculty of Mechanical Engineering Slovak University of Technology in Bratislava Nám. Slobody 17 812 31 Bratislava Slovakia

ISBN: (纸本)9781479909278

Recent developments in the area of industrial programing software expand the potential of the automation programs considerably. In addition to IEC 61131-3 languages, programming languages like C and C++ are getting available for industrial controllers, which opens new possibilities of reusing existing programs for real time processing in these controllers. Paper deals with swing-up and online model predictive control of mechatronic device - reaction wheel inverted pendulum. Swing-up control uses convenient shape of exponential function over pendulum position for determination of required energy to be delivered to the system. For stabilization of pendulum in the upright position a predictive controller based on optimal control law with perturbation was used. An important part of the solution is PLC implementation of qpOASES package for numerical solution of quadratic optimization problem. Application is implemented and tested using industrial PLC connected to a laboratory pendulum. © 2013 IEEE.

关键词： Exponential functions

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Position estimation of the mobile robot using the Kalman filter 18

Position estimation of the mobile robot using the Kalman fil...

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18th Conference on applied Mathematics, APLIMAT 2019

作者： Slovák, Juraj Vašek, Pavol Melicher, Markus Mikuláš, Erik Institute of Automation Measurement and Applied Informatics Faculty of Mechanical Engineering Slovak University of Technology in Bratislava Nám. slobody 17 Bratislava812 31 Slovakia

ISBN: (纸本)9781510882140

The paper presents need of using Kalman filtering to optimize location of mobile robotic systems and more accurate navigation. Theoretical knowledge was verified on real system represented by mobile robotic system (MRS) with mecanum wheel. Construction deficiencies causes large deviations in movement from desired trajectory, which makes using Kalman filter more efficient. Localization was performed in indoor hall using odometry from motion sensors and tracking landmarks placed on the hall ceiling with infrared camera Stargazer. On obtained data was used discrete KF, subsequently modified data were used to regulate motion. Acquired motion trajectories were compared at the end of the article. © applied Mathematics, APLIMAT *** right reserved.

关键词： Kalman filters

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Collision-free manipulation of a robotic arm using the MS windows kinect 3D optical system 20

Collision-free manipulation of a robotic arm using the MS wi...

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20th International Conference on Process Control, PC 2015

作者： Vachálek, Ján Čapucha, L'ubomír Krasnanský, Pavol Tóth, Filip Institute of Automation Measurement and Applied Informatics Faculty of Mechanical Engineering Slovak University of Technology in Bratislava Nám. slobody 17 Bratislava812 31 Slovakia

ISBN: (纸本)9781467366274

This article presents the collision-free manipulation of a robotic arm mounted to a mobile robotic unit, using the MS Windows Kinect 3D optical camera system. The 3D optical system is used to recognize objects, aiding the collision-free manipulation of the said objects with the arm of a mobile robotic system (MRS). The placement of the optical system directly on the robotic arm is essential to ensure the autonomy of the overall system. The MRS is able to recognize pre-defined objects in three dimensional space and approach and manipulate these automatically using its robotic arm. The aim of this article is to present the algorithms used in the mobile robot to guarantee the collision-free manipulation of the MRS with objects. The novelty of our approach lies in the a priori collision avoidance strategy, instead of solving collision states as they occur. In addition to this, the article presents the localization of objects in space. For this, randomly placed balls are localized by the MRS, estimating their real coordinates. Instead of using the standard RGB colorspace, we propose to utilize the HSV colorspace to assess object coordinates, since it provides more consistent results in case the ambient lightning intensity varies. © 2015 IEEE.

关键词： Mobile robots

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Robust control of temperature fields of casting mould as distributed parameter system 10

Robust control of temperature fields of casting mould as dis...

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2009 10th European Control Conference, ECC 2009

作者： Belavy, C. Bucek, P. Noga, P. Hulko, G. Institute of Automation Measurement and Applied Informatics Faculty of Mechanical Engineering Slovak University of Technology in Bratislava Nám. Slobody 17 Bratislava81 231 Slovakia

ISBN: (纸本)9783952417393

In the paper, a robust control of temperature fields of the casting mould in the benchmark casting plant is presented. Temperature fields are represented as distributed parameter systems with dynamic models in the form of lumped-input/distributed-output system. This representation enables decomposition of control synthesis problem to time domain and space domain tasks. Control synthesis in the space domain is solved as an approximation problem. In time domain, it is possible to apply various control synthesis methods established well for lumped parameter systems. For robust control synthesis with internal model control structure, model uncertainty of the controlled system was considered. Simulation analysis of the robust control of the temperature field in the casting mould was carried out using the Distributed Parameter Systems Blockset for MATLAB & Simulink - Third-party MathWorks product. © 2009 EUCA.

关键词： Uncertainty analysis

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Semi-analytical finite element method applied for characterizing micropolar fibrous composites

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applied Mathematics and Mechanics(English Edition) 2024年第12期45卷 2147-2164页

作者： J.A.OTERO Y.ESPINOSA-ALMEYDA R.RODRIGUEZ-RAMOS J.MERODIO School of Engineering and Sciences Monterrey Institute of TechnologyEstado de Mexico 52926Mexico Institute of Engineering and Technology Autonomous University of Ciudad JuarezCiudad JuarezChihuahua 32310Mexico Postgraduate Program in Computational Modeling in Science and Technology Federal Fluminense UniversityRıo de Janeiro 27255-125Brazil Faculty of Mathematics and Computer Science University of HavanaLa Habana 10400Cuba Department of Mathematics Applied to ICT School of Informatics Systems EngineeringTechnical University of MadridMadrid 28031Spain

A semi-analytical finite element method(SAFEM),based on the two-scale asymptotic homogenization method(AHM)and the finite element method(FEM),is implemented to obtain the effective properties of two-phase fiber-reinforced composites(FRCs).The fibers are periodically distributed and unidirectionally aligned in a homogeneous *** framework addresses the static linear elastic micropolar problem through partial differential equations,subject to boundary conditions and perfect interface contact *** mathematical formulation of the local problems and the effective coefficients are presented by the *** local problems obtained from the AHM are solved by the FEM,which is denoted as the *** numerical results are provided,and the accuracy of the solutions is analyzed,indicating that the formulas and results obtained with the SAFEM may serve as the reference points for validating the outcomes of experimental and numerical computations.

关键词： semi-analytical approach fiber-reinforced composite(FRC) effective property finite element method(FEM) asymptotic homogenization method(AHM) micropolar elasticity

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