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Mediterranean Conference on control and automation (MED)

作者： M. Dlapa Department of Automation and Control Engineering Faculty of Applied Informatics Tomas Bata University Zlin Zlin Czech Republic

The paper deals with design of a robust controller via algebraic mu-synthesis for two tank system, which is a well known benchmark problem. The controller is designed by decoupling two-input two-output system into two identical SISO (Single-Input Single-Output) plants. The task of designing the robust controller is then performed by finding a suitable pole placement for the SISO systems with the robustness assessed by structured singular value denoted mu for generalized plant. The final controller is compared with D-K iteration as a standard tool for mu-synthesis through simulation for nominal plant and plant perturbed by the worst case perturbation.

关键词： control systems Robust control MIMO Automatic control State feedback Valves Temperature Transfer functions Design automation control engineering

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Validation heat transfer model by experimental measurement

Validation heat transfer model by experimental measurement

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International Carpathian control Conference (ICCC)

作者： Vladimir Gerlich Department of Automation and Control Engineering Faculty of Applied Informatics Tomas Bata University Zlin Zlin Czech Republic

The main idea of this project is to simulate the thermal construction responses in dependence on changing boundary conditions. In order to predict environmental temperature precisely a model of one room has been developed and implemented in COMSOL Multiphysics. A finite element model was developed in 3D coordinates in order to achieve illustration of an air and an energy movement and to simulate the transient process in the walls. Notwithstanding, this model was not accurate enough for application in building conditions. Main goal of this paper is in updating current model to get results with sufficient accuracy. Temperature course of the model is analyzed and compared to the experimentally measured temperature data.

关键词： Temperature measurement Mathematical model Atmospheric modeling Heating Heat transfer Buildings Temperature distribution

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Modelling and control of Raw Hide Desalting Process

Modelling and Control of Raw Hide Desalting Process

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2015 International Conference on Environmental Science and Energy Engineering(ICESEE 2015)

作者： Vladimir VASEK Dagmar JANACOVA Karel KOLOMAZNIK Pavel MOKREJS Department of Automation and Control Engineering Faculty of Applied Informatics Faculty of Technology Tomas Bata University in Zlín

The contribution deals with optimizing of desalting process during soaking and application of automatic control via microcomputer technology in leather manufacturing industry on the base mathematics deterministic diffusion model describing desalting *** of raw hides comprises a series of particular processes through which raw hide is progressively transformed into the *** a combination of mathematical modelling and laboratory testing by automatic control system we search an optimal procedure for desalting with regard to ecological and economic *** this paper we describe testing of desalting in the flow systems with flow rate automatic *** obtained results confirm the elimination of concentration shocks which cause the collapse of the surface layer texture of cured hide.

关键词： Desalting Raw hide Tannery technology Mathematical model Measuring and control microcomputer system Simulation

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TreeSwap: Data Augmentation for Machine Translation via Dependency Subtree Swapping

arXiv

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arXiv 2023年

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

Data augmentation methods for neural machine translation are particularly useful when limited amount of training data is available, which is often the case when dealing with low-resource languages. We introduce a novel augmentation method, which generates new sentences by swapping objects and subjects across bisentences. This is performed simultaneously based on the dependency parse trees of the source and target sentences. We name this method TreeSwap. Our results show that TreeSwap achieves consistent improvements over baseline models in 4 language pairs in both directions on resource-constrained datasets. We also explore domain-specific corpora, but find that our method does not make significant improvements on law, medical and IT data. We report the scores of similar augmentation methods and find that TreeSwap performs comparably. We also analyze the generated sentences qualitatively and find that the augmentation produces a correct translation in most cases. Our code is available on Github. © 2023, CC BY.

关键词： Neural machine translation

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The role of interpretable patterns in deep learning for morphology

arXiv

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arXiv 2020年

作者： Ács, Judit Kornai, András Department of Automation and Applied Informatics Budapest University of Technology and Economics Hungary Institute for Computer Science and Control Hungary

We examine the role of character patterns in three tasks: morphological analysis, lemmatization and copy. We use a modified version of the standard sequence-to-sequence model, where the encoder is a pattern matching network. Each pattern scores all possible N character long subwords (substrings) on the source side, and the highest scoring subword’s score is used to initialize the decoder as well as the input to the attention mechanism. This method allows learning which subwords of the input are important for generating the output. By training the models on the same source but different target, we can compare what subwords are important for different tasks and how they relate to each other. We define a similarity metric, a generalized form of the Jaccard similarity, and assign a similarity score to each pair of the three tasks that work on the same source but may differ in target. We examine how these three tasks are related to each other in 12 languages. Our code is publicly available. © 2020, CC BY-SA.

关键词： Pattern matching

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Two-Degree-of-Freedom Feedback Loop Factorization controller for Oscillating Plant with Uncertain Time Delay and Astatism Using Structured Singular Value

Two-Degree-of-Freedom Feedback Loop Factorization Controller...

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International Conference on control, automation and Diagnosis (ICCAD)

作者： Marek Dlapa Department of Automation and Control Engineering Faculty of Applied Informatics Tomas Bata University in Zlin Zlin Czech Republic

ISBN: (数字)9798350361025

ISBN: (纸本)9798350361032

Application of Robust control Toolbox for Time Delay Systems implemented in the Matlab system to the oscillating plant with uncertain time delay and astatism using the D-K iteration and algebraic approach. The algebraic approach combines the structured singular value, algebraic theory and algorithm of global optimization solving remaining issues in structured singular value framework. The algorithm for global optimization can be alternated with direct search methods such as Nelder-Mead simplex method giving solutions for problems with one local extreme. As a global optimization method, Differential Migration is used proving to be reliable in solving this type of problems. The D-K iteration represents a standard method in the structured singular value theory. The results obtained from the D-K iteration are compared with the algebraic approach.

关键词： Robust control Feedback loop Delay effects Search methods Optimization methods Reliability theory Mathematical models

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Robust controller Design with Two-Degree-of-Freedom Feedback Loop Factorization for Oscillating Plant with Uncertain Time Delay*

Robust Controller Design with Two-Degree-of-Freedom Feedback...

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International Conference on control, automation and Diagnosis (ICCAD)

作者： Marek Dlapa Department of Automation and Control Engineering Faculty of Applied Informatics Tomas Bata University in Zlin Zlin Czech Republic

Application of Robust control Toolbox for Time Delay Systems implemented in the Matlab system to the oscillating plant with uncertain time delay using the D-K iteration and algebraic approach. The algebraic approach combines the structured singular value, algebraic theory and algorithm of global optimization solving remaining issues in structured singular value framework. The algorithm of global optimization can be alternated with direct search methods such as Nelder-Mead simplex method giving solutions for problems with one local extreme. As a global optimization method, Differential Migration is used proved to be reliable in solving this type of problems. The D-K iteration represents a standard method in the structured singular value theory. The results obtained from the D-K iteration are compared with the algebraic approach.

关键词：

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Interpolative frequency characteristics generators for the Vestibular Nucleus activity

Interpolative frequency characteristics generators for the V...

引用

作者： Codrean, Alexandru Ceregan, Vlad Dragomir, Toma-Leonida Korodi, Adrian Control System and Informatics Politehnica University of Timisoara Bd. V. Parvan No. 2 300223 Timisoara Romania Department of Automation and Applied Informatics Politehnica University of Timisoara Bd. V. Parvan No. 2 300223 Timisoara Romania

ISBN: (纸本)9789881701282

The nervous control of the cardiovascular system has been the subject of intensive research investigations during the last decades. This nervous control usually involves two or more nervous reflex mechanisms that act at the same time, increasing a lot the complexity of the system. Although many aspects are currently known regarding some reflex mechanisms (e.g. the baroreflex), others remain in a veil of uncertainties. This is the case of the vestibular- sympathetic reflex, which has not been characterized at a quantitative level yet. In this context, the aim of this paper is to take a first step in a quantitative model of the vestibular sympathetic reflex, by developing an interpolative model of the Vestibular Nucleus first. The model was built based on experimental data available in the literature. This interpolative model will allow a more thorough analysis of the dynamic behavior of the Vestibular Nucleus, and also a coupling with the output of the Vestibular receptors.

关键词： Cardiovascular system

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Robust Proportional-Integral control of a laboratory model using Programmable Logic controller SIMATIC S7-300

Robust Proportional-Integral control of a laboratory model u...

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6th IFAC Symposium on Robust control Design, ROCOND'09

作者： Matušů, Radek Vaneková, Katarína Prokop, Roman Bakošová, Monika Department of Automation and Control Engineering Faculty of Applied Informatics Tomas Bata University in Zlín Nad Stráněmi 4511 76005 Zlín Czech Republic Department of Information Engineering and Process Control Faculty of Chemical and Food Technology Slovak University of Technology in Bratislava Radlinského 9 81237 Bratislava Slovakia

ISBN: (纸本)9783902661456

The main aim of the contribution is to present a possible approach to design of simple Proportional-Integral (PI) robust controllers and subsequently to demonstrate their applicability during control of a laboratory model with uncertain parameters through the Programmable Logic controller (PLC) SIMATIC S7-300 by Siemens Company. The proposed and utilized synthesis consists of two steps - the former one is a determination of controller parameters area, which ensures the robustly stable control loop and which is based on the computing/plotting the stability boundary locus while the latter one lies in the final choice of the controller itself relying on algebraic techniques. The basic theoretical parts are followed by laboratory experiments in which the 3rd order nonlinear electronic model has been successfully controlled in various working points. © 2009 IFAC.

关键词： Programmable logic controllers

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On the errors-in-variables extended kaiman filter

On the errors-in-variables extended kaiman filter

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IEEE International Joint Conferences on Computational Cybernetics and Technical informatics, ICCC-CONTI 2010

作者： Burnham, K.J. Vinsonneau, B. Precup, R.-E. Preitl, S. Control Theory and Applications Centre Coventry University Priory Street CVl 5FB Coventry United Kingdom Department of Automation and Applied Informatics Politehnica University of Timisoara Bd. V. Parvan 2 300223 Timisoara Romania

ISBN: (纸本)9781424474332

Motivation for this paper stems from the need to deal with systems in which uncertainty exists on the measured signals and in the parameters of an assumed system model of known structure, and/or where the LTI assumption no longer holds. The potential of the a approach presented here is demonstrated when it is applied to a system in the presence of both an imposed mismatch in the model parameters as well the case of time-varying parameters. The effectiveness of the new EIV-EKF procedure is compared with that of an EIV Kaiman Alter, and evaluated on both single-input single-output and multiple-input multiple-output systems. © 2010 IEEE.

关键词： MIMO systems

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