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19th International Conference on Software Technologies, ICSOFT 2024

作者： Pfannenstiel, Hanna Ungerer, Martin Sieber, Ingo Institute for Automation and Applied Informatics KIT Hermann-von-Helmholtz-Platz 1 Eggenstein-Leopoldshafen76344 Germany

ISBN: (纸本)9789897587061

In this paper, we present a method for the automated determination of aerosol jet parameters for the Aerosol-on-Demand (AoD) jet-printhead. A critical aspect in the simulation of our computational fluid dynamics (CFD) model is the simulation time due to the high model complexity in combination with a large number of individual elements. This, together with the problem of determining the focal point through measurements on our laboratory setup, leads to our approach of model reduction as the basis for an automated determination of the aerosol jet parameters, which is shown using the example of determining the focal position and focal width. Starting from a fluid dynamic model, we create a reduced model by separating the variables, with which we can predict aerosol jet parameters. The method presented here is validated by CFD simulations of an aerosol spray with a mass of individual droplets are varied according to a Rosin-Rammler distribution. © 2024 by SCITEPRESS – Science and Technology Publications, Lda.

关键词： Computational fluid dynamics

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An open-source software for the simulation of fixational eye movements

An open-source software for the simulation of fixational eye...

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作者： Allgeier, Stephan Anzlinger, Fabian Bohn, Sebastian Mikut, Ralf Neumann, Oliver Reichert, Klaus-Martin Stachs, Oliver Sperlich, Karsten Institute for Automation and Applied Informatics Karlsruhe Germany Rostock University Medical Center Department of Ophthalmology Rostock Germany

Laser-scanning confocal microscopy of the human cornea acquires in vivo images of corneal tissues with cellular resolution, which offers diagnostic potential for a variety of diseases. However, involuntary fixational eye movements induce motion artefacts that pose a challenge for accurate morphometric analysis and particularly for preceding image data fusion steps. Different image registration algorithms promise to eliminate such artefacts, but objective, quantitative evaluation of the registration results is difficult because of the lack of ground truth data. Simulation approaches offer a possibility to close this gap. Existing open-source software for the simulation of fixational eye movements is currently limited to creating drift movement. The present contribution proposes complementary models for microsaccade and tremor components to provide complete simulated fixational eye movement paths. In addition, it reports results from an extensive examination of different model parameter combinations. It is shown that the microsaccade model is capable of reproducing intermicrosaccade intervals that closely resemble experimental data. A software implementation is provided as open-source Python modules. © 2024 The Author(s), published by De Gruyter.

关键词： Image fusion

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Lowering barriers to a large-scale implementation of grid booster projects by introducing a hybrid concept

Lowering barriers to a large-scale implementation of grid bo...

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2024 IEEE PES Innovative Smart Grid Technologies Europe Conference, ISGT EUROPE 2024

作者： Lotze, Jonas Dorn, Marvin Hagenmeyer, Veit TransnetBW GmbH Stuttgart Germany Institute for Automation and Applied Informatics Karlsruhe Institute of Technology Eggenstein-Leopoldshafen Germany

ISBN: (纸本)9789531842976

The future of power systems belongs to renewables. And to integrate them, the expansion of the electricity grids is undoubtedly necessary. Furthermore, power systems cannot operate without reserves and flexibilities. For these to be efficient, system-serving, and economical, holistic concepts are needed. This paper describes the grid booster concept and presents the major barriers to a large-scale implementation in electric power systems. A proposal for enhancing economic viability and multi-applicability is presented through the discussion of a hybrid grid booster concept. © 2024 IEEE.

关键词： Power grids

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Symmetrical Operation of Four Channel Resonant Boost DC-DC Converters in Continuous Conduction Mode

Symmetrical Operation of Four Channel Resonant Boost DC-DC C...

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2024 International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management, PCIM Europe 2024

作者： Hamar, János Stumpf, Péter Bándy, Kristóf Orvai, Róbert Department of Automation and Applied Informatics Faculty of Electrical Engineering and Informatics Budapest University of Technology and Economics Műegyetem rkp. 3 Budapest1111 Hungary

ISBN: (纸本)9783800762620

The steady-state operation of a four channel resonant step-up dc/dc converter is presented and analyzed in continuous current conduction mode (CCM). The converter is equipped with two input channels, four output channels, and facilitates zero voltage (ZVS) and/or zero current switching (ZCS), which help reducing the switching losses. The quasi-sinusoidal waveforms assist in improving the EMI characteristics. The relations among the input and output voltages, with the use of the control variables, are derived. The effect of the control variables on the operation is evaluated. The theoretical results are verified by computer simulations and experimental tests. © VDE VERLAG GMBH · Berlin · Offenbach.

关键词： DC-DC converters

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Unified Namespace and Asset Administration Shell: A Winning Combination for Digital Production 29

Unified Namespace and Asset Administration Shell: A Winning ...

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29th IEEE International Conference on Emerging Technologies and Factory automation, ETFA 2024

作者： Mäule, Johannes Kutzler, Tobias Leich, Thomas Schäfer, Denes Richter, Christian Fraunhofer Iff Logistics and Factory Systems Magdeburg Germany Harz University of Applied Sciences Automation and Informatics Wernigerode Germany

ISBN: (纸本)9798350361230

Modern production systems demands advanced data networking. Concepts like the unified namespace help in reconfiguring the data flow of different hierarchy levels into a centralized data space. This data space connects data stakeholders, including Manufacturing Execution System and Supervisory Control and Data Acquisition systems on one side, and assets, sensors, and actuators on the other. The lack of standardization leads to individualistic solutions in the existing solutions. The concept of the Asset Administration Shell provides standardization for asset-specific data. This paper presents the design and implementation of a 'AAS-based Unified Namespace' concept leveraging the Asset Administration Shell, along with a standardized structure based on ISA-95. The focus of this work is on the effective handling of event data for its relevance in real-time decision-making. Therefore, we focus on the effective handling of event data. © 2024 IEEE.

关键词： Interoperability

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Industry 4.0-compliant Asset Administration Shell Service Collector using Single-Board Computers

Industry 4.0-compliant Asset Administration Shell Service Co...

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2023 Low-Cost Digital Solutions for Industrial automation, LoDiSA 2023

作者： Bär, Martín Alejandro Colombo, Armando Walter Institute for Industrial Informatics Automation and Robotics University of Applied Sciences Emden/Leer Emden Germany

Industry 4.0-compliant digitalization is intensively penetrating the industrial Eco-system, bringing its benefits by generating or improving new complementary functionalities and associated business, providing a feasible way to interconnect stakeholders within the value chain and supply-chain, as well as along the product and system's Life-Cycle, which can share digitalized data and information in form of Added-value Services. To facilitate perform those businesses, Industry 4.0-compliant service-oriented infrastructures are required. Functionalities and associated data and information can be provided/exposed and/or consumed as services by systems of Cyber-physical things. In the language of Industry 4.0, those physical things are identified as"Assets". Each physical"Asset" has associated a Cyber-part, the so called Asset Administration Shell (AAS), which contains a set of digitalized Data/Information/Function-Models, i.e., Digital Twins, and responsible for supporting an Industry 4.0-compliant communication/networking of the digitalized Asset. The AAS is fully responsible for the provision, exposition, consumption, composition, orchestration of services. The broad adoption of the AAS in a digitalized industrial environment is mainly depending on the costs of the digitalization-migration-process, which needs to respond to a set of functional and technical requirements. Among others, requirements for using Low-Cost technologies supporting the implementation of AAS with low energy consumption, efficiency and flexibility, should essentially be fulfilled. In this scenario, the authors present a service-collector of AAS that is implemented in commercial low-cost technology and deployed in a common Industry 4.0-compliant network, using REST-API and and OPC UA based infrastructure. The paper describes also the corresponding algorithm to perform the service-collection, based on the Python programming language, which is finally deployed and executed by a Single-Board Compute

关键词： Life cycle

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From News to Summaries: Building a Hungarian Corpus for Extractive and Abstractive Summarization 30

From News to Summaries: Building a Hungarian Corpus for Extr...

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Joint 30th International Conference on Computational Linguistics and 14th International Conference on Language Resources and Evaluation, LREC-COLING 2024

作者： Barta, Botond Lakatos, Dorina Nagy, Attila Nyist, Milán Konor Ács, Judit HUN-REN Institute for Computer Science and Control Hungary Department of Automation and Applied Informatics Budapest University of Technology and Economics Hungary

ISBN: (纸本)9782493814104

Training summarization models requires substantial amounts of training data. However for less resourceful languages like Hungarian, openly available models and datasets are notably scarce. To address this gap our paper introduces HunSum-2 an open-source Hungarian corpus suitable for training abstractive and extractive summarization models. The dataset is assembled from segments of the Common Crawl corpus undergoing thorough cleaning, preprocessing and deduplication. In addition to abstractive summarization we generate sentence-level labels for extractive summarization using sentence similarity. We train baseline models for both extractive and abstractive summarization using the collected dataset. To demonstrate the effectiveness of the trained models, we perform both quantitative and qualitative evaluation. Our dataset, models and code are publicly available, encouraging replication, further research, and real-world applications across various domains. © 2024 ELRA Language Resource Association: CC BY-NC 4.0.

关键词： abstractive summarization extractive summarization Hungarian

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Detection of a Quasiperiodic Phenomenon of a Binary Star System Using Convolutional Neural Network

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Intelligent automation & Soft Computing 2023年第9期37卷 2519-2535页

作者： Denis Benka Sabína Vasová Michal Kebísek Maximilián Strémy Institute of Applied Informatics Automation and MechatronicsFaculty of Materials Science and TechnologySlovak University of TechnologyTrnava91724Slovakia

Pattern recognition algorithms are commonly utilized to discover certain patterns,particularly in image-based *** study focuses on quasiperiodic oscillations(QPO)in celestial objects referred to as cataclysmic variables(CV).We are dealing with interestingly indistinct QPO signals,which we analyze using a power density spectrum(PDS).The confidence in detecting the latter using certain statistical approaches may come out with less significance than the *** work with real and simulated QPO data of a CV called MV *** primary statistical tool for determining confidence levels is sigma *** aforementioned CV has scientifically proven QPO existence,but as indicated by our analysis,the QPO ended up falling below 1-σ,and such QPOs are not noteworthy based on the former *** intend to propose and ultimately train a convolutional neural network(CNN)using two types of QPO data with varying amounts of training dataset *** aim to demonstrate the accuracy and viability of the classification using a CNN in comparison to sigma *** resulting detection rate of our algorithm is very plausible,thus proving the effectiveness of CNNs in this scientific area.

关键词： Convolutional neural network quasi-periodic oscillation cataclysmic variable simulation

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Proactive Control of Production Systems Using Proposed Data Integration Strategies 7th

Proactive Control of Production Systems Using Proposed Data ...

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7th Computational Methods in Systems and Software, CoMeSySo 2023

作者： Burčiar, Fedor Kováč, Szabolcs Važan, Pavel Faculty of Materials Science and Technology in Trnava Institute of Applied Informatics Automation and Mechatronics Slovak University of Technology in Bratislava Trnava Slovakia

ISBN: (纸本)9783031548123

Developments in the production sector during recent years have led to rapid growth in usage of automated systems when it comes to communication and data exchange. Such systems help businesses with acquiring new customers, while also providing means to react to sudden changes in product demand and competition with the rest of the market. These circumstances put pressure on small to medium businesses to implement expensive systems into their production infrastructure without proper integration with the rest of the available hardware or software. Installing such systems often leads to further expenses in operator education and training. This paper touches upon the problems faced by these businesses, which if left neglected, could in certain extreme cases lead to unrecoverable financial losses. The proposed solutions help with lightening the pressure by incorporating fully automated integration strategies. Using various experiments, the applicability of these strategies has been verified using the Witness Horizon simulator which incorporates a Digital Twin of the AFB Festo production line. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.

关键词： Data integration

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Multiobjective Optimization of Energy Pulsation and Power Dissipation in Modular Multilevel Converters (MMCs) 65

Multiobjective Optimization of Energy Pulsation and Power Di...

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65th IEEE Annual International Scientific Conference on Power and Electrical Engineering of Riga Technical University, RTUCON 2024

作者： Kappenstein, Simon T. Hagenmeyer, Veit Groll, Lutz Institute for Automation and Applied Informatics Karlsruhe Institute of Technology Hermann-von-Helmholtz-Platz 1 Eggenstein-Leopoldshafen76344 Germany

ISBN: (纸本)9798350365771

This paper introduces a multiobjective optimization strategy for minimizing both energy pulsation and power dissipation in modular multilevel converters (MMCs). The occurrence of energy pulsation and power dissipation in MMCs has the negative potential to lead to a reduction in efficiency, to an increase in thermal stress, and to reliability issues. A Pareto front analysis shows that simultaneous improvement of both objectives is not possible. Analytical function optimization provides an exact solution for the case where only energy dissipation is considered. By optimizing the tradeoffs between minimizing energy pulsation and reducing power losses, this work offers a comprehensive solution to enhance the performance of MMCs. © 2024 IEEE.

关键词： Power converters

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