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INDIVIDUALISED APPROACHES IN control EDUCATION COURSES WITH LARGE NUMBER OF STUDENTS

IFAC Proceedings Volumes 2006年第6期39卷 529-534页

作者： M. Fikar R. Valo Čirka M. Bakoŝová M. Huba Department of Information Engineering and Process Control Faculty of Chemical and Food Technology STU Radlinského 9 812 37 Bratislava fax : +421 2 52496469 Department of Automation and Control Faculty of Electrical Engineering and Information Technology STU IlkoviČova 3 812 19 Bratislava

The aim of this paper is to give an overview about some ideas that have been introduced in past few years to the course Automatic control Fundamentals at FCFT STU. These involve heavy use of information technologies and reduction of repetitive pedagogic work using e-learning techniques for the course with a large number of students. The paper discusses reasons for this change as well as concrete technologies in question.

关键词： control engineering Information technologies E-learning XML

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control of a distillation column: A decentralized approach

Control of a distillation column: A decentralized approach

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IEEE International Conference on Computer-Aided Design

作者： Iman Makaremi Batool Labibi Advanced Automation and Digital Control Laboratory Control Department Electrical Engineering Faculty K.N. Toosi University of Technology Tehran Iran Process Control Laboratory Control Department Electrical Engineering Faculty K.N. Toosi University of Technology Tehran Iran

This paper presents a decentralized controller for a binary distillation column. The interactions between subsystems are considered as uncertainty. Then appropriate local H infin problems are defined such that by solving them and applying the designed controller to the system, closed-loop stability and diagonal dominance are guaranteed

关键词： Distillation equipment control systems MIMO Distributed control Uncertainty Stability Digital control Automatic control Isolation technology process control

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Batch process optimization based on support vector regression model

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Huadong Ligong Daxue Xuebao /Journal of East China University of Science and Technology 2006年第7期32卷 880-883页

作者： Liu, Yi Yang, Xian-Hui Xiong, Zhi-Hua Institute of Process Control Engineering Department of Automation Tsinghua University Beijing 100084 China

A support vector regression model based on batch to batch optimal control strategy was proposed. Because of model mismatching and unknown disturbances, the control performance of optimal control profile calculated from empirical model is deteriorated. Due to the repetitive nature of batch processes , it is possible to improve the operation of the next batch using the information of the current and previous batch runs. A batch to batch optimal control strategy based on the linearization of the model around the control profile is proposed. Applications to a simulated batch styrene polymerization reactor demonstrate that the proposed method can improve process performance from batch to batch in the presence of model mismatching and unknown disturbances.

关键词： Batch process Batch to batch optimization Multivariable statistical process control Support vector regression

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Method of surface EMG pattern recognition based on AR parameter model and clustering analysis

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Jiliang Xuebao/Acta Metrologica Sinica 2006年第3期27卷 286-289页

作者： Cui, Jian-Guo Wang, Xu Li, Zhong-Hai Tian, Feng Key Laboratory of Process Industry Automation of Ministry of Education Northeastern University Shenyang 110004 China Department of Automation Control Shenyang Institute of Aeronautical Engineering Shenyang 110034 China

Surface electromyography (SEMG) is a bio-electrical manifestation related to neuromuscular activation. Electromyography pattern recognition plays an important role in SEMG application. A new SEMG pattern recognition method based on AR parameter model and clustering analysis is proposed. Four channel SEMG signals from corresponding muscles (palmaris longus, brachioradialis, flexor carpi ulnaris, biceps brachii) are picked up and analyzed with AR model parameter. Using AR model parameters as signal characteristics, an eigenvector is composed and inputted to the Mahalanobis distance classifier to identify different movement patterns. Eight movement patterns (hand grasps, hand extension, wrist circumrotates entad, wrist circumrotates forth, wrist bends, wrist spreads, forearm circumrotates entad, forearm circumrotates forth) are successfully identified. Experiments show that the proposed method performs very well and the recognition result is robust. It is believed that this method can be straightforwardly expanded to other nonstationary bioelectric signals pattern recognition study.

关键词： Autoregressive (AR) parameter model Clustering analysis Metrology Pattern recognition Surface electromyography

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Plant-wide (BSM2) evaluation of reject water treatment with a SHARON-anommox process

Plant-wide (BSM2) evaluation of reject water treatment with ...

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作者： Volcke, Eveline I.P. Gernaey, K.V. Vrecko, Darko Jeppsson, Ulf Van Loosdrecht, M.C.M. Vanrolleghem, Peter A. BIOMATH Department of Applied Mathematics Biometrics and Process Control Ghent University Coupure Links 653 B-9000 Gent Belgium Department of Industrial Electrical Engineering and Automation Lund University PO Box 118 SE-22100 Lund Sweden Department of Chemical Engineering Technical University of Denmark Building 229 DK-2800 Kgs. Lyngby Denmark Department of Systems and Control Jožef Stefan Institute Jamova 39 SI-1000 Ljubljana Slovenia Department of Biochemical Engineering Delft University of Technology Julianalaan 67 NL-2628 BC Delft Netherlands ModelEAU Département de Génie Civil Université Laval Pavillon Pouliot Québec QC G1K 7P4 Canada

ISBN: (纸本)1843395835

In wastewater treatment plants (WWTPs) equipped with sludge digestion and dewatering systems, the reject water originating from these facilities contributes significantly to the nitrogen load of the activated sludge tanks, to which it is typically recycled. In this paper, the impact of reject water streams on the performance of a WWTP is assessed in a simulation study, using the Benchmark Simulation Model no. 2 (BSM2), that includes the processes describing sludge treatment and in this way allows for plant-wide evaluation. Comparison of performance of a WWTP without reject water with a WWTP where reject water is recycled to the primary clarifier, i.e. the BSM2 plant, shows that the ammonium load of the influent to the primary clarifier is 28% higher in the case of reject water recycling. This results in violation of the effluent total nitrogen limit. In order to relieve the main wastewater treatment plant, reject water treatment with a combined SHARON-Anammox process seems a promising option. The simulation results indicate that significant improvements of the effluent quality of the main wastewater treatment plant can be realized. An economic evaluation of the different scenarios is performed using an Operating Cost Index (OCI). © IWA Publishing 2006.

关键词： Wastewater treatment

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Comparison of linear and non-linear PLS methods for soft-sensing of an SBR for nutrient removal

Comparison of linear and non-linear PLS methods for soft-sen...

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3rd Biennial Meeting of the International Environmental Modelling and Software Society: Summit on Environmental Modelling and Software, iEMSs 2006

作者： Villez, K. Lee, D.S. Rosen, C. Vanrolleghem, P.A. BIOMATH Department of Applied Mathematics Biometrics and Process Control Ghent Univeristy Coupure Links 653 B-9000 Gent Belgium Department of Environmental Engineering Kyungpook National University Sankyuk-dong Buk-gu Daegu 702-701 Korea Republic of IEA: Department of Industrial Electrical Engineering and Automation Lund University LTH SE-221 00 Lund Sweden ModelEAU: Département de Génie Civil Pavillon Pouliot Université Laval Québec QC G1K 7P4 Canada

ISBN: (纸本)1424308526

Despite of promising results in research, advanced control strategies fail to gain trust in wastewater treatment practice. Due to the sensitivity of the biological processes to disturbances, operators are often unable to find the causes of faults due to the lack of effective real-time on-line monitoring. Strategies for on-line monitoring are therefore essential to enhance biological process control. Therefore, a suitable multivariate soft-sensor is desired for fault detection and control for a pilot-scale sequencing batch reactor (SBR) system to allow effluent quality to be estimated well before off-line analysis is finished. For this purpose, several multivariate methods are available, including (linear) partial least squares (PLS), Neural Net PLS (NNPLS) and Kernel PLS (KPLS). While non-linear extensions of PLS such as NNPLS require fitting of non-linear functions, KPLS does not. KPLS is based on a non-linear transformation of the process data, followed by the fitting of a linear PLS model between the transformed inputs and outputs. PLS, NNPLS and KPLS were compared regarding their ability to predict effluent quality data and their computational requirements. While (linear) PLS and NNPLS lead to acceptable prediction, KPLS results in poor model performance. Moreover, the computational requirement of KPLS were large compared to PLS and NNPLS. When comparing PLS and NNPLS to each other, it was found that NNPLS leads to the best possible prediction given the experimental data set, while the extra computational requirements are minimal.

关键词： Neural networks

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Optimization in process industries and its application

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Huadong Ligong Daxue Xuebao /Journal of East China University of Science and Technology 2006年第7期32卷 852-855页

作者： Zhu, Xue-Mei Wang, Shu-Qing Yue, Dong Li, Pu Wozny, Gunter College of Electrical and Automation Engineering Nanjing Normal University Nanjing 210042 China National Key Lab of Industrial Control Technology Institute of Advanced Process Control Zhejiang University Hangzhou 310027 China Institute of Automation and Systems Engineering Technical University of Ilmenau Ilmenau 98684 Germany Institute of Process and Plant Technology Technical University of Berlin KWT9 Berlin10623 Germany

process optimization plays an important role in design, operation, control and computer integrated control of process industries. This paper presents the description of steady-state optimization, dynamic optimization, and the optimization of process structures based on changing market conditions in process industries. Characteristics of these optimization problems are addressed and state of the art solution approaches are proposed. Sequential quadratic programming and orthogonal collocation is used to solve the dynamic optimization problem. Finally, the dynamic optimization to minimize the energy cost of a heat-integrated distillation column system is illustrated as an example.

关键词： Heat-integrated distillation system Optimization approach Optimization problem process industry

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UML-PA as an engineering model for distributed process automation

UML-PA as an engineering model for distributed process autom...

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作者： Katzke, Uwe Vogel-Heuser, Birgit Automation and Process Control Engineering Faculty of Electrical Information and Media Engineering University of Wuppertal 42119 Wuppertal Germany

ISBN: (纸本)008045108X

Common engineering approaches and modeling approaches from software engineering are brought together. For the domain of process automation an implementation oriented approach for an object oriented software development for heterogeneous distributed systems is introduced. Model elements for control are added to UML as well as small-scale patterns for plant automation. Besides large-scale patterns are introduced as well as implementational models. The adoption of UML regarding applied diagrams and stereotypes for process automation will be introduced and evaluated. Copyright © 2005 IFAC.

关键词： Programmable logic controllers

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Experimental investigations of a direct adaptive neurofuzzy controller

Experimental investigations of a direct adaptive neurofuzzy ...

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2005 IEEE International Conference on control Applications, CCA

作者： Nyarko, Emmanuel K. Perić, Nedjeljko Petrović, Ivan Department of Automation and Process Control Faculty of Electrical Engineering University of Osijek 31000 Osijek Croatia Department of Control and Computer Engineering in Automation Faculty of Electrical Engineering and Computing University of Zagreb 10000 Zagreb Croatia

ISBN: (纸本)0780393538

The control of dynamical systems with inherent non-linear characteristics has motivated research in non-linear control theory. Two main approaches to dealing with uncertainties in control systems design are adaptive and robust control. In this paper, discrete direct adaptive control of unknown non-linear SISO systems is considered. The controller is implemented using a fuzzy neural network. The control concept is tested on a laboratory pilot plant and compared to a standard discrete FED Takahashi controller. © 2005 IEEE.

关键词： Adaptive control systems

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Plasma Arc Waste Destruction System (PAWDS) a novel approach to waste elimination aboard ships

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NAVAL ENGINEERS JOURNAL 2006年第3期118卷 139-150页

作者： Kaldas, Aida Picard, Isabelle Chronopoulos, Christos Chevalier, Philippe Carabin, Pierre Holcroft, Gillian Alexander, Gary Spezio, Joseph Mann, Jim Molintas, Henry AIDA KALDAS Eng. is the principal author and Technical Manager at PyroGenesis Inc. She is currently leading the process development team of the Plasma Arc Waste Destruction System for applications on board ships. She holds a Bachelor in Chemical Engineering from Cairo University and a Masters in Engineering Science from the University of Western Ontario. She is a member of “l'Ordre des Ingénieurs du Québec” since 1981. Prior to joining PyroGenesis Inc. Mrs. Kaldas has led several development programs working for Orica (formally ICI Explosives)for over 20 years. Her areas of expertise include process optimization and debottlenecking process modeling and particles processing. ISABELLE PICARD ENG. is a Product Development Engineer at PyroGenesis Inc. She is currently part of the process development team of the Plasma Arc Waste Destruction System for applications on board ships. She holds a Bachelor in Chemical Engineering from “école Polytechnique de Montréal”. She is a member of “l'Ordre des Ingénieurs du Québec” since 1995. Prior to joining PyroGenesis Inc. Mrs. Picard has worked as project leader for several development project related to natural gas applications working for The Natural Gas Technologies Center and as Product Development Engineer for the fuel cell industry working for H Power Canada inc. Her areas of expertise include process development and optimization system integration and equipment sizing. CHRISTOS CHRONOPOULOS Eng. is presently a Product Development Engineer at PyroGenesis Inc. Over the last two years Mr. Chronopoulos has worked on the design and development processes for the treatment of all types of wastes. Prior to joining PyroGenesis Inc. Mr. Chronopoulos worked on process engineering and process development in the Fuel Cell industry for a period of two years and also in the Electronic Plating industry for 4 years. He holds a Bachelor's degree in Chemical Engineering from Sherbrooke University. He is a member of “l'Ordre des Ingénieurs du Québec”. PHILIPPE CHEVALIER Eng. is the

The Plasma Arc Waste Destruction System (PAWDS) uses plasma energy, with temperatures over 5,000 degrees C, to rapidly and efficiently destroy combustible waste aboard ships. PAWDS has proven itself to be a viable alternative to traditional incinerators. >> In September 2003, Carnival Cruise Lines were the first to install a PAWDS aboard their 2,056 passenger (plus 1,000 crew members) capacity, M/S Fantasy cruise ship, to treat ship waste including paper, cardboard, plastics, textiles, wood, and food. As of June 2004, it is being operated and maintained solely by Carnival Cruise Lines personnel and has been permitted to operate in port by the Bahamian port authorities. >> The Navy's next generation aircraft carrier, CVN 21, will be equipped with two FAWDS to process all of the non-food combustible solid waste generated with sufficient system redundancy. The US Navy has been jointly developing the PAWDS with PyroGenesis Inc. over the last 6 years. The development efforts in 2004 and 2005 coupled with lessons learned from operation aboard Carnival's cruise ship have resulted in the identification of additional process and design improvements. Source emission testing by an independent laboratory has also demonstrated that the PAWDS easily meets IMO MARPOL requirements for the destruction of solid waste.

关键词： Waste treatment

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