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作者： Fodor, Attila Magyar, Attila Hangos, Katalin M. Department of Electrical Engineering and Information Systems University of Pannonia 8200 Veszprém Hungary Process Control Research Group Computer and Automation Research Institute HAS Budapest Hungary

ISBN: (纸本)9788070438657

A simple dynamic model of an industrial size synchronous generator operating in a nuclear power plant is developed in this paper based on first engineering principles. The constructed state-space model consists of a nonlinear state equation and a bi-linear output equation. It has been shown that the model is locally asymptotically stable with parameters obtained from the literature for a similar generator. The effect of load disturbances on the partially controlled generator has been analyzed by simulation using a traditional PI controller. It has been found that the controlled system is stable and can follow the set-point changes in the effective power well. The disturbance rejection of the controller is also satisfactory.

关键词： Disturbance rejection

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Basic course in control theory

Basic course in control theory

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2010 9th International Conference on Information Technology Based Higher Education and Training, ITHET 2010

作者： Hetthéssy, Jeno Barta, András Bars, Ruth Keviczky, László Dept. of Automation and Applied Informatics Budapest University of Technology and Economics HAS-BME Control Research Group Budapest Hungary MTA SZTAKI Computer and Automation Research Institute Hungarian Academy of Sciences Budapest Hungary

ISBN: (纸本)9781424457922

Course material of basic control theory has been overviewed and updated recently at the Faculty of Electrical engineering and Informatics, BME. The paper describes shortly the contents and the teaching methods of the course. In the theoretical material the concept of the Youla parametrization has been introduced which gives a new insight into controller design. MATLAB exercises support understanding and interactively applying the theoretical knowledge. New lecture notes were written both for the theoretical material and for the MATLAB laboratory exercises. The course web-site provides the actual information and gives also additional learning materials. ©2010 IEEE.

关键词： Websites

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Tensor product model transformation based friction compensation of a mechatronic system

Tensor product model transformation based friction compensat...

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14th International Conference on Intelligent engineering Systems, INES 2010

作者： Takarics, Béla Korondi, Péter Baranyi, Péter Dept. of Mechatronics Optics and Engineering Informatics Budapest University of Technology and Economics Budapest Hungary Cognitive Informatics Research Group Computer and Automation Research Institute Budapest Hungary

ISBN: (纸本)9781424476527

The Tensor Product (TP) model transformation is a recently proposed technique for transforming given Linear Parameter-Varying (LPV) state-space models into polytopic model form, namely, to parameter-varying convex combination of Linear Time Invariant (LTI) systems. The main advantage of the TP model transformation is that it is executable in a straightforward way and the Linear Matrix Inequality (LMI) based control design frameworks can immediately be applied to the resulting polytopic models to yield controllers with tractable and guaranteed performance. The main contribution of this paper is that it represents the friction of a DC servo drive in TP model form, automatically designs LMI based controller for friction compensation. The reference signal compensation is also based on the TP model transformation. The results were simulated for speed control of the DC servo drive and were compared to other control techniques. © 2010 IEEE.

关键词： controllers

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Mass action realizations of reaction kinetic system models on various time scales

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Journal of Physics: Conference Series 2011年第1期268卷

作者： K M Hangos G Szederkényi Process Control Research Group Computer and Automation Reseach Institute Kende u. 13-17 H-1111 Budapest Hungary Department of Electrical Engineering and Information Systems University of Pannonia Egyetem u. 10 Veszprém Hungary

Complex chemical reaction networks often exhibit different dynamic behaviour on different time scales. A combined approach is proposed in this work for determining physically meaningful mass action realizations of complex chemical reaction networks that describe its dynamic behaviour on different time scales. This is achieved by appropriately reducing the detailed overall mass action kinetic scheme using quasi steady state assumptions fit to the particular time scale, and then searching for an optimal realization using mixed integer linear programing. Furthermore, the relationship between the properties (reversibility, deficiency, stability) of the obtained realizations of the same system on different time scales are also investigated and related to the same properties of the detailed overall model. It is shown that the reduced models obtained by quasi steady state assumptions may show exotic nonlinear behaviour, such as oscillations, when the original detailed is globally asymptotically stable. The proposed methods are illustrated by using a simple Michaelis-Menten type reaction kinetic example. The simplified versions of the well known Brusselator model have also been investigated and presented as a case study.

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Model-based test signal generation for service diagnosis of automotive systems

Model-based test signal generation for service diagnosis of ...

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作者： Ungermann, Michael Jan, Lunze Schwarzmann, Dieter Robert Bosch GmbH Corporate Sector Research and Advance Engineering Stuttgart Germany Institute of Automation and Computer Control Ruhr-Universität Bochum Bochum Germany

ISBN: (纸本)9783902661722

A main step in service diagnosis is the selection of dedicated tests for a faulty automotive system in order to decide in which component a fault has occurred. This paper develops a test selection approach that is based on structural models of the system. A structure graph represents the physical couplings of the input, state, and output signals. The test selection method aims at finding operating points in which faults distinguish with respect to their physical input-state-output paths through the components and, thus, can be isolated by steering the system into these operating points. The main ideas are illustrated by a spark ignition engine with the faults of a leakage in the intake manifold and damaged intake valves to be distinguished. © 2010 IFAC.

关键词： Fault detection

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Guest Editorial

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IEEE Transactions on Industrial Electronics 2011年第4期58卷 1074-1080页

作者： Marco Liserre Josep Balcells Thomas Basso Jan T. Bialasiewicz Carlo Cecati Sudipta Chakraborty Josep M. Guerrero Mehrdad Kazerani Friederich Kupzog Adel Nasiri Peter Palensky José Rodriguez Pedro Rodríguez Thilo Sauter Remus Teodorescu Polytechnic University of Bari Bari Italy Universitat Politéchnica de Catalunya Barcelona Spain National Renewable Energy Laboratory (NREL) Golden CO USA Electrical Engineering Department University of Colorado Denver CO USA Department of Electrical and Information Engineering University of L'Aquila L'Aquila Italy National Renewwable Energy Laboratory (NREL) Golden CO USA Department of Automatic Control Systems and Computer Engineering Technical University of Catalonia Barcelona Spain Department of Electrical and Computer Engineering University of Waterloo Waterloo ON Canada Institue of Computer Technology Vienna Technical University Vienna Austria Department of Electrical Engineering and Computer Science University of Wisconsin Milwaukee WI USA Sustainable Building Technologies Austrian Institue of Technology (AIT) Vienna Austria Department of Electronics Engineering Universidad Técnica Federico Santa María Valparaiso Chile Research Group on Renewable Electrical Energy Systems Department of Electrical Engineering Universitat Politécnica de Catalunya (UPC) Barcelona Spain Austrian Academy of Sciences Institute of Integraded Sensor Systems Wiener Neustadt Austria

The 20 papers in this second part of this special section are classified by energy sources (wind, photovoltaic, hydro, etc.), grid-related issues (islanding, synchronization, microgrid, and smart grid), and converters... 详细信息

关键词： Special issues and sections Smart grids Renewable energy resources Photovoltaic systems Power conversion Wind energy Hydroelectric power generation Power grids

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Fault-tolerant internal model control of a diesel engine air path

Fault-tolerant internal model control of a diesel engine air...

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作者： Hilsch, M. Lunze, J. Nitsche, R. Arndt, T. Robert Bosch GmbH Corporate Sector Research and Advance Engineering Stuttgart Germany Institute of Automation and Computer Control Ruhr-Universität Bochum Bochum Germany

ISBN: (纸本)9783902661722

The paper considers the fault-tolerant control of the boost pressure and the exhaust gas recirculation of a two-stage turbocharged Diesel engine air path. The aim is to recover the stability and setpoint tracking properties of the closed-loop system in case of actuator, sensor or system faults. A model of the nominal air path is extended to describe the Diesel engine under the influence of the faults and to apply the principle of Fault-Tolerant Internal Model control (FTIMC). The application study compares the FTIMC scheme with the nominal Internal Model control of the Diesel engine and shows that for several important fault cases the FTIMC principle recovers the stability of the control loop and leads to severe improvements of setpoint tracking properties. © 2010 IFAC.

关键词： Diesel engines

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Youla-parametrized MIMO controller design for stable multivariable processes

Youla-parametrized MIMO controller design for stable multiva...

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UKACC International Conference on control 2010

作者： Bányász, Cs. Keviczky, L. Computer and Automation Research Institute of the H. Ac. of Sc. Control Engineering Research Group of the H. Ac. of Sc. Budapest Univ. of Technology and Economics Kende u 13-17 H-1111 Budapest Hungary

The Youla-parametrization is a useful method and widely applied to design controllers for open-loop stable single-input-singe-output (SISO) plants. The KB-parametrization is a successful extension of this method for t... 详细信息

ISBN: (纸本)9781846000386

关键词： controllers

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Sparse Bayesian reconstruction method for multispectral bioluminescence tomography

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Chinese Optics Letters 2010年第10期8卷 1010-1014页

作者： Feng, Jinchao Jia, Kebin Qin, Chenghu Zhu, Shouping Yang, Xin Tian, Jie College of Electronic Information and Control Engineering Beijing University of Technology Beijing 100124 China Medical Image Processing Group Institute of Automation Chinese Academy of Sciences Beijing 100190 China Life Science Research Center Xidian University Xi'an 710071 China

We present a sparse Bayesian reconstruction method based on multiple types of a priori information for multispectral bioluminescence tomography (BLT). In the Bayesian approach, five kinds of a priori information are incorporated, reducing the ill-posedness of BLT. Specifically, source sparsity characteristic is considered to promote reconstruction results. Considering the computational burden in the multispectral case, a series of strategies is adopted to improve computational efficiency, such as optimal permissible source region strategy and node model of the finite element method. The performance of the proposed algorithm is validated by a heterogeneous three-dimensional (3D) micron scale computed tomography atlas and a mouse-shaped phantom. Reconstructed results demonstrate the feasibility and effectiveness of the proposed algorithm. © 2010 Chinese Optics Letters.

关键词： Computational efficiency

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Identifiability of a Hodgkin-Huxley type ion channel under voltage step measurement conditions

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IFAC Proceedings Volumes 2010年第5期43卷 332-337页

作者： D. Csercsik Gábor Szederkényi Katalin M. Hangos Process Control Research Group Systems and Control Laboratory Computer and Automation Research Institute Hungarian Academy of Sciences P.O. Box 63 H-1518 Budapest Hungary

In this paper, we analyze the identifiability properties of a Hodgkin-Huxley (HH) type voltage dependent ion channel model under voltage clamp circumstances. The elimination of the differential variables is performed, and the identifiability of various parameters is analyzed using the differential algebra approach and the algorithm based on the Taylor series expansion of the output. It is shown that the model is structurally non-identifiable using certain commonly applied parametrizations, and hidden dependences between physical parameters are unravelled. Using the results of the identifiability analysis, physically meaningful examples are shown when the model parameters are different but the system outputs are identical.

关键词： Modeling and Identification control Applications in Biological Processes

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