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American control Conference (ACC)

作者： B. Sulikowski K. Galkowski E. Rogers D.H. Owens A. Kummert Institute of Control and Computation Engineering University of Zielona Gora Zielona Gora Poland School of Electronics and Computer Science University of Southampton Southampton UK Department of Automatic Control and Systems Engineering University of Sheffield Sheffield UK Faculty of Electrical Information and Media Engineering University of Wuppertal Wuppertal Germany

Repetitive processes propagate information in two independent directions and are of both systems theoretic and applications interest. They cannot be controlled by direct extension of existing techniques from either standard (termed ID here) or 2D systems theory. Here we give new results on the design of physically based feedforward/feedback control laws to achieve desired performance and disturbance decoupling in the sense defined in the body of the paper. The new results are for the case when only output (as opposed to state) information is used to activate the control law

关键词： Output feedback Linear feedback control systems control systems Optimal control Process control Linear systems Stability Feedback control Algorithm design and analysis Iterative algorithms

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Adaptive Decision Feedback Equalizer using the Delta Operator

Adaptive Decision Feedback Equalizer using the Delta Operato...

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World Congress on Intelligent control and Automation (WCICA)

作者： Duanjin Zhang Xia Liu Wenying Zhang Institute for Automatic Control and Complex Systems Faculty 5 University of Duisburg-Essen Duisburg Germany College of Information Engineering University of Zhengzhou Zhengzhou China School of Electronic Information and Electrical Engineering Shanghai Jiaotong University Shanghai China

The problem of the delta operator formulated adaptive equalization is considered by the application of the delta operator least mean squares algorithm into the design of adaptive equalizer. The algorithm of adaptive decision feedback equalizer based on the delta operator (Delta-ADFE) is presented, and the updating-parameter expressions of decision feedback equalizer are also given. Simulation results show that the proposed Delta-ADFE algorithm has the better filtering performance and the equalizing effect than that of the traditional ADFE algorithm using the shift operator

关键词： Decision feedback equalizers Least squares approximation Filtering algorithms Adaptive equalizers Multiaccess communication Resonance light scattering Educational institutions automatic control Programmable control Adaptive control

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Time-sliding suboptimal regulation of bilinear interconnected systems

Time-sliding suboptimal regulation of bilinear interconnecte...

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IEEE International Symposium on Circuits and systems (ISCAS)

作者： M. de la Sen A.J. Garrido J.C. Soto O. Barambones F.J. Maseda I. Garrido Institute of Research and Development of Processes IIDP. Department of Electricity and Electronics Faculty of Science and Technology University of Basque Country (UPV-EHU) Leioa Spain Department of Systems Engineering and Automatic Control. EUITI de Bilbao University of Basque Country (UPV-EHU) Spain

This paper focuses on the suboptimal regulation of multivariable discrete-time bilinear systems consisting of interconnected bilinear subsystems with respect to a linear quadratic optimal regulation criterion which involves the use of state weighting terms only. Three transformations are used in order to treat the scheme over an equivalent linear system. This leads to the appearance of quadratic weighting terms related to both transformed input and state variables. In this way, a Ricatti matrix-sequence allowing the synthesis of a standard feedback control law is obtained

关键词： Interconnected systems Nonlinear systems controllability automatic control control systems Power system modeling Research and development systems engineering and theory Optimal control Linear systems

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EDUSCA (EDUCATIONAL SCADA): FEATURES AND APPLICATIONS

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IFAC Proceedings Volumes 2006年第6期39卷 614-619页

作者： Ra#uAl Alves Santos Julio E. Normey-Rico Alejandro Merino Gómez Cesar de Prada Moraga Center of Sugar Tecnology. University of Valladolid. Edificio Alfonso VIII 47011. Valladolid. Spain Department of Automation and Systems. Federal University of Santa Catarina. 88040-900 CTC-UFSC. Florianópolis-SC Brazil Department of Systems Engineering and Automatic Control. University of Valladolid. Faculty of Sciences c/ Real de Burgos s/n 47011 Valladolid Spain

This paper presents EDUSCA, an EDUcational SCAda with OPC data access. EDUSCA was specially designed for automatic control education, research and operator training purposes. The developed system takes advantage of the facilities offered by the OPC communication architecture. The system allows the students to face real practical problems, could be used to train operators in plant supervision and also allows the implementation of research functionalities. Their main advantages of EDUSCA are: (i) it can be connected to any plant whenever it includes OPC communications; (ii) it is free of licenses, thus it can be installed in many computers as necessary; (iii) it can be adapted to each application requirements and (iv) it allows the implementation of a diverse set of functionalities, as for example, control algorithms.

关键词： SCADA Supervisory control Process control Training control Education

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The design of an resource planning software application for manufacturing control

The design of an resource planning software application for ...

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EUROCON 2005 - The International Conference on Computer as a Tool

作者： Dumbrava, St. Valova, I.M. Department of Automatic Control and Industrial Informatics Faculty of Automatic Control and Computer Engineering Technical University of Iasi Romania Department of Computer Systems University of Rousse Bulgaria

ISBN: (纸本)142440049X

Markets globalization makes industrial companies to change radically, becoming more flexible, customer oriented and ague in manufacturing. Consequently, the enterprise software applications are becoming more and more complex, exploiting distributed object technology in multi-tier architectures. The aim of the paper is to present the design specification for an enterprise application that integrates the ERP concept in three-tier architecture, containing modularized, distributed subsystems in configurable and maintainable software. Starting from the customer order, to planned order dispatch, the ERP main components and the information flow within the system is presented. Then, the software architecture is discussed, where the ERP components are implemented using Enterprise Java Beans (EJB), deployed in a J2EE application server, for performing transactions with business environment and the database. Constructing the visual model in Unified Modeling Language (UML), the application is designed and analyzed. The use case diagram of the system is presented. © 2005 IEEE.

关键词： Enterprise resource planning

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A conversational man-robot interface used in robotics education

A conversational man-robot interface used in robotics educat...

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作者： Buiu, Catalin Dumitrache, Ioan Dumitrascu, Alexandru Department of Automatic Control and Systems Engineering Faculty of Automatic Control and Computer Science POLITEHNICA University of Bucharest Spl. Independentei 313 77206 Bucharest Romania

ISBN: (纸本)008045108X

This paper presents a conversational interface that uses the speech recognition and synthesis and animation abilities of two Microsoft software agents in order to assure a more natural and efficient interface with an autonomous robot. The interface is used in the robotics educational process. The basic commands to be given by voice (back, right, etc.) and the control of the agents are implemented in Visual Basic. More complex control programs can be implemented and tested in Matlab and after that executed with a simple voice command. This program is used as a part of an integrated educational strategy in autonomous robotics and was evaluated by a group of students. First experimental results related to the use of this conversational interface compared to traditional robot simulation environments and control of real robots are presented in this paper with related discussions. Copyright © 2005 IFAC.

关键词： Speech recognition

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Fragmentation and allocation of object-oriented databases for simple attributes and complex methods: A cost-based technique

Fragmentation and allocation of object-oriented databases fo...

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ITI 3rd International Conference on Information and Communications Technology, ICICT 2005 - Enabling Technologies for the New Knowledge Society

作者： Faheem, Mohamed T. Sarhan, Amany Ibrahem, Rashad L. Computers and Automatic Control Engineering Faculty of Engineering Tanta University Egypt Electrical Engineering Department High Institute of Energy Egypt

ISBN: (纸本)0780392701

The efficiency of the distributed systems is most often dominated by the network communications between the different sites. In distributed database systems, the communication between the different sites is almost essential to satisfy a query. In order to minimize the time required to respond to a query in such systems, a reliable fragmentation technique is required to place the data as close to its user as possible. The placement of these fragments to the proper sites is a complementary step to assure the right position of these fragments. The previous fragmentation techniques provided a way for fragmentation of the database that is followed by an allocation technique to allocate the produced fragments as separate steps. The key idea of this paper is that it introduces a novel technique that combines both the fragmentation and allocation processes into one composite process thus putting into consideration the allocation constraints while fragmenting the data. It also simplifies the effort required to get the best fragments and the best location of these fragments. This proposed technique relies on a cost-based model rather than an affinity model as being used in previous techniques. The case of simple methods and complex attributes database is considered in this paper. The results obtained by the technique proofed the effectiveness and usefulness of the proposed technique.

关键词： Database systems

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A frequency domain design technique for robust decentralized controllers

A frequency domain design technique for robust decentralized...

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作者： Kozáková, Alena Veselý, Vojtech Department of Automatic Control Systems Faculty of Electrical Engineering and Information Technology Slovak University of Technology Bratislava Slovakia

ISBN: (纸本)008045108X

The paper proposes a new frequency domain approach to the design of robust decentralized controllers (DC) for continuous-time systems described by a set of transfer function matrices. To guarantee the nominal stability and the prespecified nominal performance, the recently developed DC design technique (Kozáková and Veselý, 2003) has been applied, adapted so as to guarantee the robust M-Δ structure based stability conditions modified for the closed-loop system under decentralized controller as well. Unlike the standard robust approaches to the DC, this technique allows the inclusion of the nominal interactions into the nominal model;thus the conservativeness of the robust stability conditions is relaxed. Copyright © 2005 IFAC.

关键词： Continuous time systems

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Optimal self tuning neural network controller design

Optimal self tuning neural network controller design

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作者： Körösi, Ladislav Kozák, Štefan Department of Automatic Control Systems Faculty of Electrical Engineering and Information Technology SUT Ilkovičova 3 812 19 Bratislava Slovakia

ISBN: (纸本)008045108X

The proposed paper deals with modeling and control of continuous-time processes using artificial neural network with orthogonal activation functions, applicable for real-time control. A genetic algorithm has been used to find the optimal neural structure for on-line identification with the best learning algorithm. A moving prediction horizon in the control algorithm found by genetic algorithm has been compared with a constant prediction horizon. The proposed algorithms were verified on practical control problem and have proved a good performance. Copyright © 2005 IFAC.

关键词： Neural network models

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Robust PSS design for a multivariable power system

Robust PSS design for a multivariable power system

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2005 IEEE Russia Power Tech, PowerTech

作者： Veselý, V. Kozáková, A. IEEE Department of Automatic Control Systems Faculty of Electrical Engineering and IT Slovak University of Technology Ilkovicova 3 812 19 Bratislava Slovakia

ISBN: (纸本)9781424418749

The paper deals with the frequency domain design of a robust power system stabilizer (PSS) for a multivariable power system. The proposed PSS design procedure is based on a novel approach that applies the independent design methodology to the so-called equivalent subsystems along with the well-known Small Gain theory and the robust stability conditions in the M-Δ setup. Theoretical results have been applied to the design of a robust multivariable PSS for a part of the Power System of the Slovak Republic.

关键词： Design

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