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Decentralized oxygen control in multi-zone aerobic bioreactor at wastewater treatment plant

IFAC Proceedings Volumes 2010年第8期43卷 298-303页

作者： Tomasz Zubowicz Mietek. A. Brdys Department of Control Systems Engineering Faculty of Electrical and Control Engineering Gdańsk University of Technology Gdańsk Poland School of Electronic Electrical and Computer Engineering College of Engineering and Physical Sciences University of Birmingham Birmingham B15 2TT UK

This paper addresses the dissolved oxygen tracking problem in multi-zone bioreactor. The proposed approach utilizes decentralized control system incorporating fuzzy multiregional PI controllers so that satisfactory controller performance can be robustly and reliably achieved over a whole process operating range. A fuzzy supervisor of the completely decentralized control system is introduced in order to meet a global actuator capacity constraint. An overall control system can be implemented by using fairly standard equipment that is commonly available at a plant site.

关键词： multiregional PI decentralized control system parametric optimization dissolved oxygen.

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Calculation of the acceleration of parallel programs as a function of the number of threads

Calculation of the acceleration of parallel programs as a fu...

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作者： Popov, George Mastorakis, Nikos Mladenov, Valeri Faculty of Computer Systems and Control Technical University of Sofia Kliment Ohridski blvd. 8 Sofia 1000 Bulgaria English Language Faculty of Engineering Technical University of Sofia Kliment Ohridski blvd. 8 Sofia 1000 Bulgaria Department of Theoretical Electrical Engineering Technical University of Sofia Kliment Ohridski blvd. 8 Sofia 1000 Bulgaria

ISBN: (纸本)9789604742011

The purpose of this study is to determine analytically what and how acceleration from paralleling execution of a task depends. It is reasonable if level of parallelism is increased, the costs of synchronization will be increased also and upon reaching a certain degree of granulation acceleration of multi-program execution starts to decrease.

关键词： Granulation

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Estimation of dynamic neural activity using a Kalman filter approach based on physiological models

Estimation of dynamic neural activity using a Kalman filter ...

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Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC)

作者： E. Giraldo A.J. den Dekker G. Castellanos-Dominguez Faculty of Electrical and Electronic Engineering Physics and Computer Science Technical University of Pereira Colombia Delft Center of Systems and Control Delft University of Technnology Netherlands Faculty of Engineering and Architecture National University of Colombia Colombia

This paper presents a new method to estimate dynamic neural activity from EEG signals. The method is based on a Kalman filter approach, using physiological models that take both spatial and temporal dynamics into account. The filter's performance (in terms of estimation error) is analyzed for the cases of linear and nonlinear models having either time invariant or time varying parameters. The best performance is achieved with a nonlinear model with time-varying parameters.

关键词： Brain models Electroencephalography Computational modeling Inverse problems Kalman filters Estimation

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Robust Model Based control Method For Wind Energy Production

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IFAC Proceedings Volumes 2010年第17期43卷 275-280页

作者： A. Pintea D. Popescu Ioana Pisica University “Politehnica” of Bucharest Faculty of Automatic Control and Computer Engineering Splaiul Independentei 313 Bucuresti Cod Postal 060042 ROMANIA University “Politehnica” of Bucharest Power Engineering Faculty Department of Electric Power Systems Splaiul Independentei 313 Bucharest Cod Postal 060042 ROMANIA

By continuing to use fossil fuels we are bound to pollute the atmosphere, and consequently, unwanted greenhouse and climate change effects will come to dominate every part of the earth. Wind power energy represents an interesting alternative to traditional forms of obtaining energy. However, the efficiency of wind power strongly depends on the control methods that play a significant role in eliminating the perturbing factors, decreasing the structural loads and increasing the amount and quality of the energy that is produced. A design of a model based control algorithm for a horizontal wind turbine is proposed. In a model-based control approach, increased model accuracy implies reduced uncertainty. The paper will include an analysis of the advantages that may arise from using such a control technique and also will focus on the robustness of the closed loop system.

关键词： Wind power robustness IMC stability turbine pitch control

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A framework of web3D-based medical data reconstruction and visualization

A framework of web3D-based medical data reconstruction and v...

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International Conference on e-health Networking, Applications and Services (HealthCom)

作者： Sittapong Settapat Virasin Archirapatkave Tiranee Achalakul Michiko Ohkura Division of Functional Control Systems Graduate School of Engineering Shibaura Institute of Technology Tokyo Japan Department of Computer Engineering Faculty of Engineering King Mongkut's University of Technology Bangkok Thailand Faculty of Engineering Shibaura Institute of Technology Tokyo Japan

A 3D reconstruction and visualization framework from a sequence of 2D cross-sectional images has aroused extensive concern particularly in medical science and engineering. In this research, we design parallel reconstruction and visualization frameworks for medical data reconstruction and visualization. Reconstruction methods for medical data normally require high-performance computing. In this paper we make a web-based 3D reconstruction service and present a parallel computing framework for real-time processing. The visualization framework design visualizes a generated 3D model. Moreover, we implement a web-based 3D medical data reconstruction and visualization application that integrates both proposed frameworks and design our framework integrated with X3D technology and a modular approach. The web-based X3D framework integrated with a modular approach can extend cross-platform and inter-application data transfer ability and support run-time architecture to represent and communicate 3D scenes and objects.

关键词： Data visualization Biomedical imaging Computational modeling Process control Load modeling Data models Three dimensional displays

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Web-based 3D visualization and interaction of medical data using Web3D

Web-based 3D visualization and interaction of medical data u...

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SICE Annual Conference

作者： Sittapong Settapat Tiranee Achalakul Michiko Ohkura Division of Functional Control Systems Graduate School of Engineering Shibaura Institute of Technology Tokyo Japan Department of Computer Engineering Faculty of Engineering King Mongkut's University of Technology Thonburi Bangkok Thailand Faculty of Engineering Shibaura Institute of Technology Tokyo Japan

ISBN: (纸本)9781424476428

This paper describes our current work in the design and development of web-based 3D reconstruction and visualization frameworks for medical data and presents a design framework for web-based 3D visualization and interaction for medical data. We implement a web-based 3D medical data visualization application with X3D technology. The web-based X3D framework integrated with a modular approach can extend cross-platform and inter-application data transfer ability and support run-time architecture to represent and communicate 3D scenes and objects. We also present the adaptability of a Web3D standard to visualize and interact with 3D medical data without a special extension.

关键词： Three dimensional displays Data visualization Image reconstruction Solid modeling Medical diagnostic imaging Navigation

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Optimal disturbance rejection via integral sliding mode control for uncertain systems in regular form

Optimal disturbance rejection via integral sliding mode cont...

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2010 11th International Workshop on Variable Structure systems, VSS 2010

作者： Rubagotti, Matteo Estrada, Antonio Castaños, Fernando Ferrara, Antonella Fridman, Leonid Department of Mechanical and Structural Engineering Università degli Studi di Trento Via Mesiano 77 38123 Trento Italy Department of Control and Robotics Engineering Faculty C.P. 04510. Mexico City Mexico McGill Center for Intelligent Machines Montreal QC Canada Department of Computer Engineering and Systems Science Università degli Studi di Pavia Via Ferrata 1 27100 Pavia Italy

ISBN: (纸本)9781424458318

This paper considers the problem of using an integral sliding mode strategy to reduce the disturbance terms acting on nonlinear systems in regular form. It is proved that the definition of a suitable sliding manifold and the generation of sliding modes upon it can guarantee the minimization of the disturbance terms. Simulation examples shows the effectiveness of the proposal. © 2010 IEEE.

关键词： Disturbance rejection

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control communications with DDS using IEC61499 Service Interface Function Blocks

Control communications with DDS using IEC61499 Service Inter...

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International Conference on Emerging Technologies and Factory Automation (ETFA)

作者： Isidro Calvo Federico Pérez Ismael Etxeberria Guadalupe Morán Dept. of Automatic Control and Systems Engineering University of the Basque Country (UPV/EHU) Spain Dept. of Computer Languages and Systems University of the Basque Country (UPV/EHU) Spain Electronics Division Faculty of Engineering Universidad Autónoma del Estado de Mexico Toluca Mexico Electronics Division Faculty of Engineering UAEM Toluca MEXICO

The IEC61499 is an open standard for distributed control and automation. The interface between control software and hardware or communications is achieved by means of the so-called Service Interface Function Blocks (SIFB). This paper presents the guidelines to build communication SIFBs based on the emerging OMG DDS (Data Distribution Service) middleware. This specification implements in a very efficient way the Publisher/Subscriber paradigm providing significant QoS configuration possibilities. These characteristics make DDS suitable for implementing the communications among time-critical devices. By using these DDS-SIFBs within IEC61499 code generation tools, the designers of the distributed applications will be allowed to use this powerful technology in the new distributed applications.

关键词： IEC standards Middleware Hardware Quality of service Distributed control Software Process control

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Robustly Feasible Optimizing control of Network systems under Uncertainty and Application to Drinking Water Distribution systems

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IFAC Proceedings Volumes 2010年第8期43卷 304-309页

作者： Vu Nam Tran Mietek. A. Brdys School of Electronic Electrical and Computer Engineering College of Engineering and Physical Sciences. University of Birmingham Birmingham B15 2TT U.K School of Electronic Electrical and Computer Engineering College of Engineering and Physical Sciences University of Birmingham Birmingham B15 2TT UK Department of Control Systems Engineering Faculty of Electrical and Control Engineering Gdańsk University of Technology Gdańsk Poland

关键词： multiregional PI decentralized control system parametric optimization dissolved oxygen.

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Research on Data Exchange Platform for Power Enterprise Based on ESB

Research on Data Exchange Platform for Power Enterprise Base...

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International Conference on Computational Intelligence and Software Engineering (CiSE)

作者： Yaling Wang Pishi Sun Wenbin Zhang Zhanfeng Cao Applied Science Private University Beijing China Electromobility Sub-systems Volvo GTT Advanced Technology & Research Göteborg Sweden Electric Power Research Institute Puhua Information Technology Company Limited Beijing China School of Control and Computer Engineering North China Electric Power University Beijing China Faculty of Mechanical Engineering University of Ljubljana Ljubljana Slovenia

Since data sharing mechanism between the various business systems lacks of specification and standardization, information shares hardly and data exchange are inefficient, the paper proposes a data exchange platform for power enterprise based on ESB, which is based on SOA architecture, unified data exchange standards by using XML, used SOAP/HTTP(S) as the data transfer protocol between business systems and services bus and used Web Services as the business system data exchange standard interface. BEA ALSB service bus provides data exchange services for registration, release, information, routing and other functions. Practice has proved that the platform has good flexibility and scalability and can meet the business enterprise system between all kinds of complex data exchange requirements.

关键词： Business Service oriented architecture Marketing and sales Security Routing Databases

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