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6th World Symposium on Communication engineering, WSCE 2023

作者： Stergiou, Konstantinos D. Ishibashi, Yutaka Goudos, Sotirios K. Lagkas, Thomas Sarigiannidis, Panagiotis Psannis, Konstantinos E. University of Macedonia Department of Applied Informatics Thessaloniki Greece Graduate School of Engineering Nagoya Institute of Technology Nagoya Japan Aristotle University of Thessaloniki Department of Physics Thessaloniki Greece International Hellenic University Department of Computer Science Kavala Greece University of Western Macedonia Department of Informatics and Telecommunications Engineering Kozani Greece

ISBN: (纸本)9798350339505

This paper discusses the use of federated learning as a method for optimizing decision-making in communication systems. Federated learning is a machine learning technique that enables the training of models on decentralized data, allowing for the collection and analysis of data from multiple sources while maintaining the privacy and security of the data. This approach is particularly useful in communication systems, as it allows for the optimization of decision-making across a wide range of devices and networks. The paper examines the advantages of federated learning, including the ability to collect a large amount of data from a diverse range of devices, the protection of sensitive data, and the ability to adapt to changing conditions in real-time. The paper also provides specific examples of how federated learning can be used in the optimization of mobile networks and content delivery. The conclusion highlights the growing importance of federated learning in improving communication systems. © 2023 IEEE.

关键词： Learning systems

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A tool for extracting model clones from a conceptual schema

A tool for extracting model clones from a conceptual schema

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IASTED International Conference on Software engineering, as part of the 24th IASTED International Multi-Conference on applied informatics

作者： Faliagka, Evanthia Rigou, Maria Sirmakessis, Spiros Tzimas, Giannis Department of Computer Engineering and Informatics University of Patras Rio Campus 26504 Greece Research Academic Computer Technology Institute Patras University N. Kazantzaki str. Rio Campus 26500 Greece Department of Applied Informatics in Administration and Economy Technological Institution of Messolongi Nea Ktiria 30200 Greece

ISBN: (纸本)0889865744

In this paper the authors present an overview of techniques and tools that enable the effective evaluation and refactoring of a Web application's conceptual schema. Moreover, based on the introduction of the notion of model clones (in a previous work), as partial conceptual schemas that are repeated within a broader application model and the notion of model smells, as certain blocks in the Web applications model that imply the possibility of refactoring, this paper illustrates a methodology and a tool for detecting and evaluating the existence of potential model clones, in order to identify problems in an application's conceptual schema by means of efficiency, consistency, usability and overall quality. The methodology can be deployed either in the process of designing an application or in the process of reengineering it. Evaluation is performed according to a number of inspection steps. At first level the compositions used in the hypertext design are evaluated, followed by a second level evaluation concerning data manipulation and presentation to the user.

关键词： World Wide Web

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Energy-efficient Swing-up and MPC Stabilization of an Inverted Pendulum

Energy-efficient Swing-up and MPC Stabilization of an Invert...

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International Conference on Process Control (PC)

作者： Martin Gulan Peter Minarčík Jakub Kulhánek Institute of Automation Measurement and Applied Informatics Faculty of Mechanical Engineering Slovak University of Technology in Bratislava Bratislava Slovakia

This article presents a control framework to swing up and stabilize the inverted pendulum-cart system in its unstable equilibrium and maintain this configuration while changing the reference position of the cart. The swing-up problem is solved by an energy-based approach that respects physical constraints of the system. Stabilization and subsequent cart position tracking is addressed by means of an implicit model predictive controller with guaranteed stability imposed via a terminal set constraint. Viability of the proposed framework is practically demonstrated on a laboratory inverted pendulum system, the states of which were estimated by a continuous-discrete extended Kalman filter.

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Robust Control of Continuous Casting Process for Various Technological Conditions

Robust Control of Continuous Casting Process for Various Tec...

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International Carpathian Control Conference (ICCC)

作者： Sohaibullah Zarghoon Luká š Bartalský Cyril Belavý Institute of Automation Measurement and applied Informatics Faculty of Mechanical Engineering Slovak University of Technology in Bratislava Bratislava Slovakia

ISBN: (数字)9781665466363

ISBN: (纸本)9781665466370

The process of continuous steel casting, specifically the part of secondary cooling, is a typical representative of a system with distributed parameters. The paper deal with the synthesis and simulation of robust control of continuous steel casting in the secondary cooling zone. During steel production, there is a smooth change between the types of steel produced (or steel grades), to which the control system must react flexibly. Therefore, a robust approach based on simple PID controllers will be chosen for control synthesis. Based on the model obtained from the ProCast software, the uncertainty limits for the simulation model will be determined. Robust control simulations will be performed on a time-space circuit, within the simulations a possible machine failure will be tested, thus a change in cooling power in individual zones. The results will be presented as temperature fields, representing the system with distributed parameters, taking into account the time and space distribution of the controlled temerature.

关键词： Robust control Casting Uncertainty Cooling Process control Production Aerospace electronics

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MagnetoShield: Prototype of a Low-Cost Magnetic Levitation Device for Control Education

MagnetoShield: Prototype of a Low-Cost Magnetic Levitation D...

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IEEE Education engineering (EDUCON)

作者： Gergely Takács Jakub Mihalík Erik Mikuláš Martin Gulan Institute of Automation Measurement and Applied Informatics Faculty of Mechanical Engineering Slovak University of Technology in Bratislava Bratislava Slovakia

ISBN: (数字)9781728109305

ISBN: (纸本)9781728109312

This article presents a prototype reference design for a low-cost miniature magnetic levitation experiment. The proposed device is built as an Arduino expansion module, thus may be installed on a broad range of microcontroller prototyping boards. The open-source hardware design uses off-the-shelf and widely available components and 3D printing technology, thus its overall material cost is minimal. This way, the magnetic levitation experiment is transformed into a pocket laboratory that can be borrowed by students for take-home experiments. In addition to the device itself, we present an open-source application programming interface and the outline of classroom examples in modeling, system identification and closed-loop control.

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Vessels Segmentation in Angiograms Using Convolutional Neural Network: A Deep Learning Based Approach

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computer Modeling in engineering & Sciences 2023年第7期136卷 241-255页

作者： Sanjiban Sekhar Roy Ching-Hsien Hsu Akash Samaran Ranjan Goyal Arindam Pande Valentina E.Balas School of Computer Science and Engineering Vellore Institute of TechnologyVellore632014India Department of Computer Science and Information Engineering Asia UniversityTaichung41354Taiwan Department of Medical Research China Medical University HospitalChina Medical UniversityTaichung406Taiwan Guangdong-Hong Kong-Macao Joint Laboratory for Intelligent Micro-Nano Optoelectronic Technology School of Mathematics and Big DataFoshan UniversityFoshan528000China Medica Superspecialty Hospital Kolkata700099India Automation and Applied Informatics Aurel Vlaicu University of AradArad310130Romania

Coronary arterydisease(CAD)has become a significant causeof heart attack,especially amongthose 40yearsoldor *** is a need to develop new technologies andmethods to deal with this *** researchers have proposed image processing-based solutions for CADdiagnosis,but achieving highly accurate results for angiogram segmentation is still a *** different types of angiograms are adopted for CAD *** paper proposes an approach for image segmentation using ConvolutionNeuralNetworks(CNN)for diagnosing coronary artery disease to achieve state-of-the-art *** have collected the 2D X-ray images from the hospital,and the proposed model has been applied to *** augmentation has been performed in this research as it’s the most significant task required to be initiated to increase the dataset’s ***,the images have been enhanced using noise removal techniques before being fed to the CNN model for segmentation to achieve high *** the output,different settings of the network architecture undoubtedly have achieved different accuracy,among which the highest accuracy of the model is 97.61%.Compared with the other models,these results have proven to be superior to this proposed method in achieving state-of-the-art results.

关键词： Angiogram convolution neural network coronary artery disease diagnosis of CAD image segmentation

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New possibilities of industrial programming software

New possibilities of industrial programming software

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International Conference on Process Control (PC)

作者： Pavol Seman Martin Juhás Lukáš Tkáč Marek Honek Institute of Automation Measurement and Applied Informatics Faculty of Mechanical Engineering Slovak University of Technology in Bratislava Bratislava Slovakia

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.

关键词： Wheels Mathematical model Automation Process control Cost function Software packages

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Proceedings of International Ethical Hacking Conference 2018 1

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丛书名： Advances in Intelligent Systems and Computing

1000年

作者： Mohuya Chakraborty Satyajit Chakrabarti Valentina Emilia Balas J. K. Mandal

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OptoShield: A Low-Cost Tool for Control and Mechatronics Education

OptoShield: A Low-Cost Tool for Control and Mechatronics Edu...

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Asian Control Conference

作者： Gergely Takács Tibor Konkoly Martin Gulan Institute of Automation Measurement and Applied Informatics Faculty of Mechanical Engineering Slovak University of Technology in Bratislava Bratislava Slovakia

ISBN: (纸本)9781728102634

Commercial educational tools for teaching feedback concepts in control systems engineering and mechatronics are generally expensive, large, complex and sensitive instruments; therefore cannot be used for homework assignments outside the classroom. This paper presents a novel open-source teaching aid that can be readily manufactured under AC3 and as such, is financially accessible to students and universities operating on a tight budget. The device proposed in this paper implements a simple optical experiment, allowing students to follow a prescribed brightness level using feedback control concepts. In addition to real-time control, the apparatus is also suitable for teaching signal processing and system identification principles. The educational aid presented here is attached to the popular Arduino microcontroller prototyping platform in a form of a miniature extension shield, thereby using a standardized physical layout and software ecosystem. We describe the hardware, the application programming interface (API) and library written in C/C++ for the Arduino integrated development environment (IDE) and the accompanying Simulink toolbox; moreover present sample exercises for system identification and proportional-integral-derivative (PID) control.

关键词： Light emitting diodes Hardware Education Software packages Resistors Open source software

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Real-time Stabilizing MPC of a 2DOF Helicopter

Real-time Stabilizing MPC of a 2DOF Helicopter

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International Conference on Process Control (PC)

作者： Martin Gulan Peter Minarčík Martin Lizúch Institute of Automation Measurement and Applied Informatics Faculty of Mechanical Engineering Slovak University of Technology in Bratislava Bratislava Slovakia

This paper presents real-time control of a laboratory helicopter model with two degrees of freedom. To accomplish this goal we propose to employ a numerically robust approach to the synthesis of stabilizing model predictive control based on model prestabilization before the prediction phase. The underlying optimal control algorithm involves integral action, input constraints imposed by actuators, and guarantees closed-loop stability and recursive feasibility via a low-complexity terminal set constraint. Performance of the controller is practically demonstrated in the task of tracking a state reference corresponding to a predefined flight trajectory, and compared with linear quadratic control.

关键词： Helicopters Numerical models Predictive models Mathematical model Rotors Computational modeling Propellers

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