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13th IFAC Symposium on System Identification, SYSID 2003

作者： Haber, R. Schmitz, U. Bars, R. Department of Plant and Process Engineering Laboratory of Process Control University of Applied Science Cologne Betzdorfer Str. 2 KölnD-50679 Germany Department of Automation and Applied Informatics Control Research Group Hungarian Academy of Sciences Budapest University of Technology and Economics Hungary

Long-range optimal prediction algorithms use the predicted output for several steps ahead. The prediction based on traditionally estimated model parameters does not result in an optimal prediction if the measurements are noisy or/and model structure differs from real process structure. In this paper two different identification schemes are presented and compared: long-range predictive single-model identification and simultaneous multi-step-ahead prediction identification. It is shown that the first method is easier to realize but the second one leads to more accurate results. Both methods are derived for a first-order model in details. Simulation runs and a level control example illustrate the algorithms presented. © 2003 International Federation of Automatic control.

关键词： Parameter estimation

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The Nyquist criterion for LTI Time-Delay Systems

The Nyquist criterion for LTI Time-Delay Systems

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13th WSEAS International Conference on Automatic control, Modelling and Simulation, ACMOS'11

作者： Pekař, Libor Matušů, Radek Dostalek, Petr Dolinay, Jan Department of Automation and Control Engineering Faculty of Applied Informatics Tomas Bata University in Zlin nam. T. G. Masaryka 5555 76001 Zlin Czech Republic

ISBN: (纸本)9781618040046

This paper extends results about stability and stabilization of a retarded quasipolynomial obtained using the Mikhaylov criterion earlier. Retarded quasipolynomials appear as numerators and denominators of linear time-invariant time-delay systems (LTI-TDS). A LTI-TDS system of retarded type (destitute of distributed delays) is said to be stable if all roots of its characteristic quasipolynomial are located in the open left-half complex plane. The contribution transforms the formulation of spectrum assignment of a characteristic quasipolynomial into the language of the Nyquist criterion for the open loop of a control system. Again, the argument principle is utilized to derive generalized Nyquist criterion for LTI-TDS. Stability measures related to the criterion are discussed with the specifications for LTI-TDS. An illustrative example is presented to illuminate the results.

关键词： Stabilization

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control of Air Flow in Air Heating Set - Algebraic Approach using Structured Singular Value

Control of Air Flow in Air Heating Set - Algebraic Approach ...

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Mediterranean Conference on control & automation

作者： Marek Dlapa Department of Automation and Control Engineering Faculty of Applied Informatics TBU in Zlin

ISBN: (纸本)9781479909964

The paper deals with the robust control of air-flow in air heating set. The identification is performed using step responses and approximation via second order system. The controller is designed using the structured singular value (SSV or μ) and algebraic approach. Since the cost function is nonconvex the optimization cannot be done using standard tools. Hence an evolutionary algorithm - Differential Migration (DM) is employed yielding good results in this case. The functionality of the controller is verified through experiments on the real plant.

关键词： Algebraic approach controller design PID control Structured singular value Differential Migration Evolutionary algorithms

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Influence of Time-Delay Mismatch for Robustness and Stability

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IFAC-PapersOnLine 2018年第14期51卷 248-253页

作者： Bányász, Cs. Keviczky, L. Bars, R. Institute of Computer Science and Control Hungarian Academy of Sciences H-1111 Budapest Kendeu 13-17 Hungary Department of Automation and Applied Informatics Budapest University of Technology and Economics H-1117 Budapest Magyar Tudósok krt 2 Q/B Hungary

In a practical control system the process always has a time delay. The uncertainty in the knowledge of the time delay i.e. the delay mismatch strongly influences the quality of the closed-loop control. It can cause unwanted instability and influences the robustness of the control. Stability region applicable for this uncertainty is investigated in this paper in connection with the required performance and robustness. © 2018

关键词： Delay control systems Convergence of numerical methods Quality control Robust control Robustness (control systems) Stability Time delay Timing circuits Closed loop control Delay mismatch performance Practical controls Stability regions Time delay uncertainties

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control of air flow in air heating set algebraic approach using structured singular value

Control of air flow in air heating set algebraic approach us...

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2013 21st Mediterranean Conference on control and automation, MED 2013

作者： Dlapa, Marek Department of Automation and Control Engineering Faculty of Applied Informatics TBU in Zlin nám. T. G. Masaryka 5555 760 01 Zlín Czech Republic

ISBN: (纸本)9781479909971

The paper deals with the robust control of airflow in air heating set. The identification is performed using step responses and approximation via second order system. The controller is designed using the structured singular value (SSV or μ) and algebraic approach. Since the cost function is nonconvex the optimization cannot be done using standard tools. Hence an evolutionary algorithm - Differential Migration (DM) is employed yielding good results in this case. The functionality of the controller is verified through experiments on the real plant. © 2013 IEEE.

关键词： Three term control systems

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Mobile robot fault tolerant control. Introducing ARTEMIC

Mobile robot fault tolerant control. Introducing ARTEMIC

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2010 2nd International Conference on Education Technology and Computer, ICETC 2010

作者： Cristian, Axenie Cemega, Daniela Automation and Industrial Informatics Department Computer Science Faculty Dunarea de Jos University University Stiintei Street Galati Romania Control Systems and Applied Informatics Computer Science Faculty Dunarea de Jos Stiintei Street Galati Romania

ISBN: (纸本)9781424463688

Real-time applications should timely deliver synchromzed data-sets, minimize latency in their response and meet theIr performance specifications in the presence of disturbances and faults. The fault tolerant behavior in mobile robots refers to the possibility to autonomously detectt and identify faults as well as the capability to continue operating after a fault occurred. This paper introduces a real-time distributed control application with fault tolerance capabilities for differential wheeled mobile robots, named ARTEMIC. Specific design, development and Implementation details will be provided in this paper. © 2010 IEEE.

关键词： Mobile robots

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Direct learning control design for a class of linear time-varying switched systems

Direct learning control design for a class of linear time-va...

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Fourth International Conference on control and automation

作者： Xu, Jian-Xin Korondi, Peter Yan, Rui Guan, Zhi-Hong Department of Electrical and Computer Engineering National University of Singapore Singapore 117576 Department of Automation and Applied Informatics Budapest University of Technology and Economics Department of Control Science and Engineering Huazhong University of Science and Technology Wuhan 430074 China

ISBN: (纸本)078037777X

In this paper, a direct learning control method for a class of switched systems is proposed. The objective of direct learning is to generate the desired control profile for a newly switched system without any feedback, even if the system may have uncertainties. This is achieved by exploring the inherent relationship between any two systems before and after a switch. The new method is applicable to a class of linear time varying, uncertain and switched systems, when the trajectory tracking control problem is concerned. A numerical simulation demonstrates the effectiveness of the proposed method. © 2003 IEEE.

关键词： Time varying control systems

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Real time control design for mobile robot fault tolerant control. Introducing the ARTEMIC powered mobile robot

Real time control design for mobile robot fault tolerant con...

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2010 IEEE/ASME International Conference on Mechatronic and Embedded Systems and Applications, MESA 2010

作者： Axenie, Cristian Solea, Razvan Automation and Industrial Informatics Department Computer Science Faculty Dunarea de Jos University Stiintei Street Galati Romania Control Systems and Applied Informatics Computer Science Faculty Dunarea de Jos University Stiintei Street Galati Romania

ISBN: (纸本)9781424471010

Real-time applications should timely deliver synchronized data-sets, minimize latency and jitter in their response and meet their performance specifications in the presence of disturbances and faults. The fault tolerant behavior in mobile robots refers to the possibility to autonomously detect and identify faults as well as the capability to continue operating after a fault occurred. This paper introduces a real-time distributed control application with fault tolerance capabilities for differential wheeled mobile robots, named ARTEMIC. The paper focuses on design details and performance analysis at the system operation level. Some stress tests are executed during normal operation to validate the proposal. Specific design, development and implementation details will be provided in this paper. © 2010 IEEE.

关键词： Mobile robots

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Analysing EEG signals for mathematical computations

Analysing EEG signals for mathematical computations

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23rd International Conference on Circuits, Systems, Communications and Computers, CSCC 2019

作者： Strmiska, Martin Koudelkova, Zuzana Tomas Bata University in Zlin Faculty of Applied Informatics Department of Automation and Control Engineering Nad Stranemi 4511 Zlin760 05 Czech Republic Tomas Bata University in Zlin Faculty of Applied Informatics Department of Informatics and Artificial Intelligence Nad Stranemi 4511 Zlin760 05 Czech Republic

Brain computer interface (BCI) is a device that allows us to scan brainwaves. Achieved signals can be processed using a computer and the analyzed brain activity can be than monitored. In this paper, the use of the non-invasive brain scanning method applied on person at solving a system of equations is described. This solving the system of equations was obtained by two mathematical methods. The measurement was performed for solving equations by Gaussian elimination and by substitution methods separately. The results of the measurements were visualized by graphing the brain activity. The aim of the work is to determine the more practical method of those two. © 2019 The Authors, published by EDP Sciences.

关键词： Brain computer interface

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Implementation and application of a simple real-time OS for 8-bit microcontrollers

Implementation and application of a simple real-time OS for ...

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作者： Dolinay, J. Vašek, V. Dostálek, P. Department of Automation and Control Engineering Tomas Bata University in Zlin Faculty of Applied Informatics Nad Stráněmi 4511 760 05 Zlín Czech Republic

ISBN: (纸本)9789604742769

This paper presents small real-time operating system which has been developed at our institute and also an application and practical verification of this system in a portable data acquisition unit. The system, named RTMON is intended mainly as a teaching aid for lessons of microcontroller programming where it allows the students to simply write applications in C language with several concurrently running processes. However, it can also be used in practical applications, as is demonstrated by the data acquisition unit described in this paper. The system works on 8-bit microcontrollers with the HC(S)08 core made by Freescale and also on Atmel AVR Mega8 microcontrollers.

关键词： Data acquisition

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