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IEEE Conference on control Technology and Applications

作者： A. Maxim J. M. Maestre C. F. Caruntu C. Lazar Department of Electrical energy Metals Mechanical Constructions and Systems Ghent University Ghent Belgium Department of Systems and Automation Engineering University of Seville Spain Department of Automatic Control and Applied Informatics ‘Gheorghe Asachi’ Technical University of Iasi Iasi Romania

This paper proposes a robust coalitional distributed model predictive control algorithm suitable for input coupled sub-systems. The core idea is based on a distributed iterative implementation with minimum information exchange, in which the coupling information is regarded as bounded additive uncertainty. If the disturbance received from the neighbours is too large for the local optimization problem, then a coalitional strategy is adopted. The closed-loop stability is guaranteed via terminal constraint. The performance of the coalitional strategy is compared with an iterative min-max distributed model predictive controller and a centralized model predictive controller.

关键词： performance coalitional strategy compared

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Tire slip fuzzy control of a laboratory Anti-lock Braking System

Tire slip fuzzy control of a laboratory Anti-lock Braking Sy...

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European control Conference (ECC)

作者： Mircea-Bogdan Rădac Radu-Emil Precup Stefan Preitl József K. Tar Keith J. Burnham Department of Automation and Applied Informatics “Politehnica” University of Timisoara Timisoara Romania Institute of Intelligent Engineering Systems Budapest Tech Polytechnical Institution Budapest Hungary Control Theory and Applications Centre Coventry University Coventry UK

A tire slip fuzzy control solution is designed and implemented in the framework of an Anti-lock Braking System (ABS) comprising a highly nonlinear controlled plant. The fuzzy controllers are designed to work for locally linearized models of the plant. Their parameters are tuned by mapping from simple PI controllers in terms of the modal equivalence principle. The experience from the experiments is incorporated in the design of the rules and the stability analysis enables the controller design. The benefits of filtering the input of the fuzzy controller are highlighted in real-time experimental results.

关键词： Wheels Tires Stability analysis Actuators Friction Fuzzy control Mathematical model

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Comparison of sensor configurations for mass flow estimation of turbocharged diesel engines

Lecture Notes in Control and Information Sciences

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Lecture Notes in control and Information Sciences 2012年 418卷 303-326页

作者： Polóni, Tomáš Rohal'-Ilkiv, Boris Alberer, Daniel Del Re, Luigi Johansen, Tor Arne Institute of Automation Measurement and Applied Informatics Faculty of Mechanical Engineering Slovak University of Technology Bratislava Slovakia Institute for Design and Control of Mechatronical Systems Johannes Kepler University Linz Austria Department of Engineering Cybernetics Norwegian University of Science and Technology Trondheim Norway

ISBN: (纸本)9781447122203

The increasing demands on quality of power, emissions and overall performance of combustion engines lay new goals for the hardware and the software development of control systems. High-performance embedded controllers open the possibilities for application of numerical methods to solve the problems of modeling and control of combustion engines. Algorithms for estimation of state and parameters are essential components of many advanced control, monitoring and signal processing engine applications. A widely applicable estimator is given by the Extended Kalman Filter (EKF) which defines a finite memory recursive algorithm suited for real-time implementation, where only the last measurement is used to update the state estimate, based on the past history being approximately summarized by the a priori estimate of the state and the error covariance matrix estimate. The proposed EKF uses an augmented air-path state-space model to estimate unmeasurable mass flow quantities. The EKF algorithm based on the augmented state-space model considerably reduces the modeling errors compared to the open loop estimator simulation and compared to the EKF without the augmentation which is demonstrated on a standard production Diesel engine data. The experimental validation of the observed state quantities is performed against the measured pressures and turbocharger speed data. The estimated mass flow quantities are indirectly validated through the air compressor flow that is directly validated against air mass flow sensor data. Two two-sensor setups are considered in this study. In the first experiment the intake manifold pressure and the turbocharger speed is used. The second experiment uses the intake manifold pressure and the exhaust manifold pressure as the measurement information for the EKF. The second experiment gives more precise mass flow estimate in term of less bias on the estimates, but more variance due to the high frequency exhaust manifold pressure variations caused by the

关键词： Mass transfer

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Pole placement approaches for linear and fuzzy systems

Pole placement approaches for linear and fuzzy systems

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International Symposium on Intelligent Systems and informatics (SISY)

作者： S. Preitl R.-E. Precup P. A. Clep I.-B. Ursache J. Fodor I. Skrjanc Department of Automation and Applied Informatics Polytechnic슠University of Timisoara Timisoara Romania Institute of Intelligent Engineering Systems Budapest Tech Polytechnical Institution Budapest Hungary Laboratory of Modelling Simulation and Control University of Ljubljana Ljubljana Slovenia

The paper investigates several pole placement methods in the linear case and suggests a new pole placement method by means of fuzzy linear equations. The linear methods concern the constant real part poles, the poles places on a circle, Butterworth configurations without and with the correction of the imaginary part, the pole-zero cancellation, and the poles placed on an ellipse. Low order systems are considered. The pole placement methods are compared by the digital simulation of control systemspsila behaviors with respect to the modification of the reference input. The conclusions are useful for continuous control systems, and they can be extended easily to digital control systems including quasi-continuous ones.

关键词： State feedback Fuzzy systems control systems Equations Poles and zeros control system synthesis Stability Digital control Nonlinear control systems automation

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Tire slip fuzzy control of a laboratory anti-lock braking system 10

Tire slip fuzzy control of a laboratory anti-lock braking sy...

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2009 10th European control Conference, ECC 2009

作者： Radac, Mircea-Bogdan Precup, Radu-Emil Preitl, Stefan Tar, Jozsef K. Burnham, Keith J. Department of Automation and Applied Informatics 'Politehnica' University of Timisoara Bd. V. Parvan 2 Timisoara300223 Romania Institute of Intelligent Engineering Systems Budapest Tech Polytechnical Institution Bécsi út 96/B Budapest1034 Hungary Control Theory and Applications Centre Coventry University Armstrong Siddeley Building Priory Street CoventryCV1 5FB United Kingdom

ISBN: (纸本)9783952417393

关键词： Fuzzy control

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Modeling and control aspects of long distance telesurgical applications

Modeling and control aspects of long distance telesurgical a...

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International Conference on Computational Cybernetics (ICCC)

作者： Tamás Haidegger Levente Kovács Stefan Preitl Radu-Emil Precup Adalbert Kovács Balázs Benyó Zoltán Benyó Department of Control Engineering and Information Technology Politehnica University Timisoara Timisoara Romania Dept. of Control Engineering and Information Technology Dept. of Automation and Applied Informatics “Politehnica” University of Timisoara Timisoara Romania Dept. of Mathematics “Politehnica” University of Timisoara Timisoara Romania

ISBN: (纸本)9781424474325

There is an increasing need to support telemedicine with advanced technology. Currently, long distance telesurgical systems are only used on Earth for research purposes, but the military and the space agencies are interested in the spatial extension of effective surgical treatment through remote teleoperation. One of the major limitations of future systems is the communication lag time. In the case of the envisioned human exploratory space missions to Moon and Mars, the signal latency can be several seconds or even minutes. This paper deals with theoretical and practical aspects of the problem. Modeling approaches are discussed, proposing simplified human and machine representations to accommodate long distance telesurgical applications. Further, classical control methods are presented based on cascade control, focusing on teleoperation. A suitable controller can be designed with an empirical controller of the inner loop, based on Kessler methods, while the outer loop can be based on predictive control.

关键词： Space technology Humans Telemedicine Earth Surgery Space exploration Space missions Moon Mars Delay

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Evolutionary optimization methods for predictive on-off control

Evolutionary optimization methods for predictive on-off cont...

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作者： Schmitz, Ulrich Haber, Robert Bars, Ruth Shell Deutschland Oil Rhineland Refinery Department for Technology and Services Ludwigshafener Strasse l D-50389 Wesseling Germany University of Applied Science Cologne Institute of Process Engineering and Plant Design Betzdorfer Str. 2 D-50679 Cologne Germany Budapest Univ. of Technology and Economics Dept. of Automation and Applied Informatics MTA-BME Control Research Group Goldmann Gy.ter 3 H-1111 Budapest Hungary

ISBN: (纸本)9783902661661

On-off control is still widely used in the industry, especially for discontinuous actuators, e.g. compressors, steam turbines or furnace burners. Exact set-point control is not possible by an on-off controller. Lower and upper limits are defined for the control signal which should not be violated. For this predictive gap control quadratic and horizon dependent cost functions are defined. Traditional numerical optimization fails with longer prediction horizons, but a genetic algorithm can be effectively applied even for long horizons.

关键词： Actuators

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A MATLAB virtual laboratory to support learning of auto-tuning PID approaches

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IFAC-PapersOnLine 2024年第7期58卷 73-78页

作者： J.A. Rossiter A. Visioli S. Dormido R. Bars Department of Automatic Control and Systems Engineering University of Sheffield Sheffield S1 3JD UK Dipartimento di Ingegneria Meccanica e Industiale University of Brescia Italy Universidad Nacional de Educacion a Distancia Madrid Spain Department of Automation and Applied Informatics Budapest University of Technology and Economics Hungary

This paper presents a small number of MATLAB APPs and livescript files designed to help students both understand and implement PID tuning. The paper presents the thinking behind the use of MATLAB and the topic itself before then describing the proposed resources in detail. The resources split into files with detailed mathematical and coding background students can use for self-study and assignments, and a virtual laboratory which is more intuitive and interactive and useful for familiarisation with core concepts. The files were recently added to the control101 toolbox (Rossiter, 2023).

关键词： control101 toolbox PID compensation virtual laboratories independent learning

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Optimal Choice of Horizons for Predictive control by Using Genetic Algorithms

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IFAC Proceedings Volumes 2003年第18期36卷 507-512页

作者： R. Haber U. Schmitz R. Bars Department of Plant and Process Engineering Laboratory of Process Control University of Applied Science Cologne D-50679 Köln Betzdorfer Str. 2 Germany fax: +49-221-8275-2836 Department of Automation and Applied Informatics Budapest University of Technology and Economics H-1111 Budapest Goldmann Gy. tér 3. Hungary fax : +36-1-463-2871

For predictive control in industry often very long horizons for control error and manipulated signal are used because of the slow processes which take place in the petrochemical industry. In order to reduce the computational effort some commercial predictive control program packages offer the ability to reduce the number of points in both horizons but do not recommend how to select the points which have to be considered in the horizon of the control error and manipulated variable. In this work the authors introduce an optimal choice not only of the horizon lengths itself but also for the strategy of reducing the number of points in the horizons. A genetic optimization algorithm was used both for the search for the optimal length of the horizons and for the best allocation of the points in the horizons. The results of the optimization process where used to deduct a simple rule.

关键词： Predictive control long horizons blocking coincidence points compaction points optimal choice of horizons

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First Experience of the control System of HVAC Based on KNX Fieldbus applied in Intelligent Buildings Laboratory

First Experience of the Control System of HVAC Based on KNX ...

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The First International Conference on Building Energy and Environment

作者： Martin Zalesak Petr Polach Tomas Bata University in Zlín Faculty of Applied InformaticsDepartment of Automation and Control EngineeringNad Stráněmi 4511 760 05 ZlínCzech Republic Brno University of Technology Faculty of Electrical Engineering and CommunicationDepartment of Control and InstrumentationKolejní 4612 00 BrnoCzech Republic

A new multipurpose laboratory of building technology has been built in Tomas Bata University, Faculty of applied informatics and set into test operation. The laboratory supports several subjects like modern HVAC system applications, with renewable sources of energy implemented (solar collectors and reversible heat pump application), and a comprehensive system of control, based on the open bus communication system KNX , communication gate based on the TCP/IP protocol. The laboratory is as well equipped as a training tool for control systems based on bus communication particularly KNX (finished) and LONWORKS and BACNET (under construction). The paper describes the first results achieved by the laboratory.

关键词： Intelligent buildings, Building automation, System integration, Laboratory, Thermal modeling

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