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9th IFAC International Symposium on Computer Applications in Biotechnology, CAB 2004

作者： Haag, Jens E. Wouwer, Alain Vande Remy, Marcel Bogaerts, Philippe Control Department Faculty of Engineering Boulevard Dolez 31 MonsB-7000 Belgium Control Engineering and System Analysis Department Université Libre de Bruxelles Avenue F. D. Roosevelt 50 CP 165/55 BrusselsB-1050 Belgium

Modeling and parameter identification are important prerequisites for state estimation and control of complex biological systems in bioengineering. Due to the great variety of cell lines and the rapidity of developments in genetics, biosystems have to be investigated in a fast and efficient way to identify the major metabolic phenomena. This paper proposes a systematic modeling procedure, which enables the description of the most important experimental settings and biological effects in terms of stoichiometry, kinetics and metabolic regulation. This procedure is successfully applied to the real case of a perfused mammalian cell culture of non-transfected CHO-K1 cells in suspension. Copyright © IFAC Computer Applications in Biotechnology, Nancy, France, 2004.

关键词： Parameter estimation

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Robust static output feedback for discrete-time systems - LMI approach

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Periodica Polytechnica Electrical engineering 2004年第3-4期48卷 151-163页

作者： Rosinová, D. Veselý, V. Department of Automatic Control System Slovak University of Technology Faculty of Electrical Engineering and IT Bratislava Slovakia

Two novel linear matrix inequality (LMI) based procedures to receive a stabilizing robust output feedback gain are presented, one of them being a modification of previous results of OLIVEIRA et al., [5]. The proposed robust control law stabilizes the respective uncertain discrete-time system described by a polytopic model with guaranteed cost. The obtained results are compared with other LMI results from literature and illustrated on an example.

关键词： Discrete time control systems

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ORPHEUS - reconnaissance robotic system controlled with visual telepresence

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IFAC Proceedings Volumes 2004年第8期37卷 692-697页

作者： L. Zalud Department of Control and Instrumentation Faculty of Electrical Engineering and Communication Brno University of Technology Bozetechova 2 612 66 Brno Czech Republic

Orpheus mobile robot is a teleoperated device primarily designed for remote exploration of hazardous places and rescue missions. The robot is able to operate both indoors and outdoors, is made to be durable and reliable. It is small enough to pass through standard doors - is less than 60cms wide. The robot is remotely operated with help of visual telepresence. The device is controlled through advanced user interface with joystick and head mounted display with inertial head movement sensor. The functionality and reliability of the system was tested on Robocup Rescue League 2003 world championship in Italy where our team placed on 1 st place.

关键词： communication robot robot control telerobotics user interfaces

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Sliding mode controller with nonlinear sliding surface for a second order system with input saturation

Sliding mode controller with nonlinear sliding surface for a...

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Annual Conference of Industrial Electronics Society

作者： Sohee Han Byungsun Cho Sung-Han Son Kang-Bak Park T. Tsuji Department of Control and Instrumentation Engineering Korea University South Korea Graduate School of Life Science & System Engineering Kyushu Institute of Technology Japan

In this paper, a sliding mode controller for a second order system with input saturation is proposed. The proposed method uses a nonlinear sliding surface to ensure that the control signal generated by the controller ... 详细信息

关键词： Nonlinear control systems Sliding mode control control systems Equations Signal generators Time varying systems Uncertainty Vectors Instruments systems engineering and theory

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Communication in safety-related applications

Acta Technica CSAV (Ceskoslovensk Akademie Ved)

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Acta Technica CSAV (Ceskoslovensk Akademie Ved) 2004年第1期49卷 59-68页

作者： Franeková, Mária Department of Control System Faculty of Electrical Engineering University of Žilina Velky diel 010 26 Zilina Slovakia

The paper deals with the problems of securing safely the data transmitted via the systems for the control of railway transport. What is intended is to summarize both the threats and the defence reactions, especially those occurring in open transmission systems. The possibility of using channel coding techniques and cryptography mechanisms is analyzed, following the Standard EN 50159. Finally, the mathematical probability theorems are applied to the determination of undetected errors in channel decoders and in ciphering/deciphering techniques.

关键词： Security systems

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Impression transformation of a face based on discriminant analysis on separately coded representations of facial shape and texture

Impression transformation of a face based on discriminant an...

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International Conference on Automatic Face and Gesture Recognition

作者： T. Kobayashi M. Ozu S. Otake S. Akamatsu Department of System Engineering Graduate School of Engineering Hosei University Koganei Tokyo Japan Department of Systems Control Engineering Faculty of Engineering Hosei University Koganei Tokyo Japan

This work describes an attempt to develop a real-life application for transforming the appearance of a person's face to give a more favorable impression. Face images are first represented as high-dimensional vectors by separating the shape and texture information, and variations in the appearance of face images are coded by applying principal component analysis to a set of various face images. The relationship between the coded representation and the impression of corresponding images is analyzed, and an impression transfer vector is defined by the Fisher's linear discriminant obtained from a number of training images previously categorized into two opposing classes for a given impression dimension. An image manipulation method for transforming impressions is proposed which shifts the projection of the input image in the parameter space by an arbitrary magnitude of the impression transfer vector. Experimental results for impression transformations of both age and gender dimensions showed that the method proposed for face image manipulation is an effective one.

关键词： Face Principal component analysis Vectors Shape control Humans systems engineering and theory control engineering Electronic mail Image analysis Biological information theory

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Comparison of racial effect in face identification systems based on Eigenface and GaborJet

Comparison of racial effect in face identification systems b...

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SICE Annual Conference

作者： K. Tanaka K. Machida S. Matsuura S. Akamatsu Department of System Engineering Graduate School of Engineering Hosei University Japan NEC System Integration and Construction Limited Japan Canon Inc. Japan Faculty of Engineering Department of Systems Control Engineering Hosei University Koganei Tokyo Japan

Most people report finding it difficult to recognize the faces of people of other races, a phenomenon known as other-race effect, in face perception. If this tendency is also shown by automatic face identification systems, it might pose a type of racial problem for systems that are being widely introduced to security applications on a global scale, such as use for passport control at international airports. Armed with an awareness of this potential problem faced by biometric authentication systems, we investigated whether two major classical schemes for image representation in face recognition, i.e. Eigenface and GaborJet, show different racial effects in terms of verification error on alien subjects. Results indicate that, contrary to general understanding, Eigenface may outperform GaborJet when faces could be either Japanese or non-Japanese.

关键词： Face recognition Biometrics Humans Prototypes systems engineering and theory National electric code control engineering Automatic control control systems Authentication

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systematic Model Identification of Complex Bioprocesses: Application to a CHO-K1 Cell Culture

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IFAC Proceedings Volumes 2004年第3期37卷 97-102页

作者： Jens E. Haag Alain Vande Wouwer Marcel Remy Philippe Bogaerts Control Department Faculty of Engineering Boulevard Dolez 31 B-7000 Mons Belgium Control Engineering and System Analysis Department Université Libre de Bruxelles Avenue F. D. Roosevelt 50 CP 165/55 B-1050 Brussels

关键词： dynamic modeling parameter estimation macroscopic reaction schemes C-identifiability mammalian cell culture

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Expansion of Codd algebra operations with recursive objects

Expansion of Codd algebra operations with recursive objects

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International Forum on Strategic Technology, IFOST

作者： V.V. Govorushko V.B. Novoseltsev The Faculty of Computer Science and Engineering Control System Optimization Department Cybenetic Center Tomsk Polytechnic University Tomsk Russia

In this paper, we discuss the relational algebra and recursive relationships between binary and ternary relationships in entity-relationship modeling. We define the interpretation of the recursive tables that can be applied to the complicated relationships having the same participating entities. We propose a new approach to modeling that is suitable for representing self-similar objects and for creating hierarchical structures. It combines methods of the set theory for the recursive relations within a single modeling paradigm, allowing users to define self-similar, partially self-similar, or hierarchical systems in a consistent and flexible manner. The use of recursive relationships in the definitions of self-similar objects yields representations that can be rendered at varying levels of detail or precision at run time.

关键词： Algebra Relational databases Data models Set theory Mathematical model Logic functions Computer science systems engineering and theory control systems Hierarchical systems

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Diversity control approach to ant colony optimization for unit commitment problem

Diversity control approach to ant colony optimization for un...

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IEEE Region 10 International Conference TENCON

作者： D. Nualhong S. Chusanapiputt S. Phomvuttisarn T. Saengsuwan S. Jantarang Electrical Engineering Department Electrical and Control System Engineering Division Electricity Generating Authority of Thailand Bangkok Thailand Department of Electrical Power Engineering Faculty of Engineering Mahanakorn University Bangkok Thailand Center of Excellence in Electrical Power Technology Faculty of Engineering Chulalongkom University Bangkok Thailand Department of Electrical Engineering Faculty of Engineering Kasetsart University Bangkok Thailand Department of Computer Engineering and Satellite Research Center Faculty of Engineering Mahanakom University of Technology Bangkok Thailand

This paper presents a new method to solve the constrained unit commitment problem by applying ant colony optimization (ACO) based on the diversity control approach. The pheromone updating rule is modified to control the diversification by adopting a simple mechanism for random selection in ACO. The proposed method is tested on the 10-unit test system with a scheduling time horizon of 24 hours. The numerical results show an economical saving in the total operating cost when compared to the previous literature results. Moreover, two types of the proposed diversity control technique have the features of easy implementation and a better convergence rate superior to a standard ACO.

关键词： Ant colony optimization

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