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Correction to "Combining of Chaotic Differential Evolution and Quadratic programming for Economic Dispatch Optimization with Valve-Point Effect"

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IEEE Transactions on Power systems 2006年第3期21卷 1465-1465页

作者： L. Dos Santos Coelho V.C. Mariani Production and Systems Engineering Graduate Program Automation and Systems Laboratory PUCPR/CCET/PPGEPS/LAS Pontifical Catholic University of Paraná Curitiba Parana Brazil Mechanical Engineering Graduate Program PUCPR/CCET/PPGEPS/LAS Pontifical Catholic University of Paraná Curitiba Parana Brazil

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A diagnosis framework of hybrid dynamic systems based on time fuzzy petri nets

A diagnosis framework of hybrid dynamic systems based on tim...

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作者： Loures, E. Rocha Pascal, J.C. Laboratory for Analysis and Architecture of Systems Toulouse France Graduate Program in Production System Engineering Curitiba Brazil

ISBN: (纸本)008045108X

This paper presents a diagnosis framework based on a qualitative model of the process. Starting from a dynamic abstraction procedure under a defined operating mode a fuzzy partitioning of the variables evolution is made, defining for each measured or observable variable a number of qualitative states. Then time Fuzzy intervals representing the moment of state change are defined. The process behaviour of the operating mode is represented by Time Fuzzy Petri nets (TFPN) model and its evolution is the consequence of events detection due to the partitioning bounds crossing. According to the membership possibility of an event to the estimated time interval and to fuzzy influence knowledge, it is possible to reason about a fault occurrence. The fuzzy data issue from the TFPN components allows evaluating the causes of the fault or failure mode. A model-based diagnosis of a hybrid system is presented. Copyright © 2005 IFAC.

关键词： Hybrid systems

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THE INTEGRITY OF THE PROCESS APPROACH APPLICATION BY THE P3TECH TECHNOLOGY USAGE

THE INTEGRITY OF THE PROCESS APPROACH APPLICATION BY THE P3T...

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The Eighth World Conference on Integrated Design & Process Technology

作者： W.S.Bonfim E.P.De Lima S.E.G.Da Costa Production and Systems Engineering Graduate Program Pontifical Catholic University of Parana Curitiba Brazil Production and Systems Engineering Graduate Program Pontifical Catholic University of Parana Curitiba Brazil Production and Systems Engineering Graduate Program Pontifical Catholic University of Parana Curitiba Brazil

The Process Approach is a method to solving problems in Operations Strategy Management (OMS).This method drives the conception and development of an operationalization process of conceptualframeworks,

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A DIAGNOSIS FRAMEWORK OF HYBRID DYNAMIC systems BASED ON TIME FUZZY PETRI NETS

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IFAC Proceedings Volumes 2005年第1期38卷 55-60页

作者： E. Rocha Loures J.C. Pascal Laboratory for Analysis and Architecture of Systems – LAAS/CNRS Toulouse-France Graduate Program in Production System Engineering – PUCPR Curitiba-Brazil

关键词： Time fuzzy Petri nets qualitative modelling possibility theory detection diagnosis hybrid systems

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Redundant Information Analysis in a Decomposed Petri Net Model

Redundant Information Analysis in a Decomposed Petri Net Mod...

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International Conference on Computational Intelligence for Modelling, Control and Automation, and International Conference on Intelligent Agents, Web Technologies and Internet Commerce

作者： M. Da Silveira M. Combacau E. Portela LAAS-CNRS TOULOUSE - cedex 04 France Graduate Program on Production and Systems Engineering Pontifical Catholic University of Paraná Curitiba Brazil

Many works propose to use decentralized models to control and supervise physical systems. The decomposition tasks are, often, executed by an expert on the physical application. Recent works developed at LAAS-CNRS propose method to systematically decompose centralised models based on Petri nets. This method generates redundant information between the sub-modules. In some cases, these redundancies are necessary to guarantee the dependability of the system (by duplicating critical information). It can also be used by the diagnosis algorithm in order to improve the fault isolation (by pointing out the relation between sub-models) and to reduce the maintenance costs (by reducing the number of sub-models that must be modified to update the system). However, the duplication of information introduce extra costs that can be observed by the complexity of keeping the data coherence and by the surcharge of the communication network coming from the data exchange between interdependent sub-models. This paper presents a set of indicators that can be used by the designer's team to evaluate the consequences of redundant information introduction and to help them to decide the most appropriated configuration of the system

关键词： Information analysis Petri nets Redundancy Costs production systems Communication networks Flexible manufacturing systems Manufacturing systems Control system synthesis Automatic generation control

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Mixed 2/∞ control for uncertain systems under pole placement constraints using Genetic Algorithms and LMIs

Mixed 2/∞ control for uncertain systems under pole placemen...

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Proceedings of the 2004 IEEE International Symposium on Intelligent Control - 2004 ISIC

作者： Neumann, Donald De Araújo, Humberto X. Industrial and Systems Engineering Graduate Program - PPGEPS Pontifical Catholic University of Paraná PUC-PR Brazil PPGEPS PUC-PR Brazil

This paper is concerned with the mixed 2/ ∞ control problem combined with robust pole placement in linear matrix inequality (LMI) regions. Continuous-time linear systems subject to polytopic parametric uncertainties are studied. Based on Genetic Algorithms (GAs) and LMIs, a hybrid algorithm is presented for numerical computation of a robust fixed-order, static or dynamic, output feedback controller. This approach does not require that all specifications are enforced by a single closed-loop Lyapunov function. This allows to reduce the conservatism of the usual existing methods. In addition, this approach can be used for synthesis for reduced or full order controllers. Examples borrowed from the, literature are discussed to validate this approach. © 2004 IEEE.

关键词： Uncertain systems

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Mixed H/sub 2//H/sub /spl infin// control for uncertain systems under pole placement constraints using genetic algorithms and LMIs

Mixed H/sub 2//H/sub /spl infin// control for uncertain syst...

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IEEE International Symposium on Intelligent Control (ISIC)

作者： D. Neumann H.X. de Araujo Industrial and systems Engineering Pontifical Catholic University of Paraná Brazil Industrial and Systems Engineering Graduate Program PPGEPS at the Pontificai Catholic University of Paraná PUC-PR Brazil The PPGEPS at the PUC-PR Brazil

This work is concerned with the mixed H/sub 2//H/sub /spl infin// control problem combined with robust pole placement in linear matrix inequality (LMI) regions. Continuous-time linear systems subject to polytopic parametric uncertainties are studied. Based on genetic algorithms (GA) and LMI, a hybrid algorithm is presented for numerical computation of a robust fixed-order, static or dynamic, output feedback controller. This approach does not require that all specifications are enforced by a single closed-loop Lyapunov function. This allows to reduce the conservatism of the usual existing methods. In addition, this approach can be used for synthesis for reduced or full order controllers. Examples borrowed from the literature are discussed to validate this approach.

关键词： Control systems Uncertain systems State feedback Genetic algorithms Robust control Output feedback Hydrogen Symmetric matrices Uncertainty Linear matrix inequalities

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Enhancing control engineering education using a CACSD didactic environment

Enhancing control engineering education using a CACSD didact...

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IEEE International Conference on systems, Man and Cybernetics

作者： E.R. Loures M.R. Silveira M.A. Busetti Y. Arda Graduate Program in Production Systems Engineering Pontifical Catholic University of Paraná Curitiba Brazil

The classical approaches to teach the control systems present drawbacks, such as: (i) the general overview of the problem is sometimes underemphasized by the knowledge acquisition; (ii) they mainly use the academic examples that are only dealing with simple concepts and problems; (iii) laboratory experiments are either simple or under developed. Design aspects of control systems when applied to practical processes are important to improve the knowledge of the students and to motivate the utilization of modern methodologies as an emergent technology for the applications in industry. In this work, we point out some important aspects for conceiving a new educational product. We describe our experiences in creating a didactic environment for teaching and learning the control theories in engineering courses based on CACSD (computer aided control system design) and its extension to the research field of industrial problems. Two distinct proposals arise from these experiences for reducing the gap between the theoretical and practical classes, and for teaching the control systems development cycle using mathematical tools and real plants under the virtual instrumentation concept.

关键词： Control engineering education Control systems Electrical equipment industry Industrial control Knowledge acquisition Laboratories Application software Educational products Control theory Design engineering

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Abstracts of presentations on selected topics at the XIVTH International Plant Protection Congress (IPPC) - July 25-30, 1999 - International Convention Center, Jerusalem, Israel

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PHYTOPARASITICA 1999年第4期27卷 299-332页

作者： [Anonymous] Norwich UK State Institute for Quality Control of Agricultural Products (RIKILT-DLO) AE Wageningen The Netherlands Dept. of Entomology and Nematology University of Florida Gainesville USA Ecology and Biocontrol Group National Environment Research Council-(NERC) Inst. of Virology and Environmental Microbiology Oxford UK Consejo Superior de Investigaciones Cientificas — Centro de Ciencas Medioamhiental.es Madrid Spain Friedrich Miescher Institute Basel Switzerland Dept. of Field Crops Faculty of Agricultural Food and Environmental Quality The Hebrew University of Jerusalem Rehovot Israel Leeds Institute for Plant Biotechnology and Agriculture The University of Leeds Leeds UK Plant Genetic Systems Gent Belgium Jealott’s Hill Research Centre Zeneca Agrochemicals Bracknell UK Plant Quarantine Policy Branch Australian Quarantine and Inspection Service (AQIS) Canberra Australia International Plant Genetic Resources Institute (IPGRI) International Network for the Improvement of Banana and Plantain (INIBAP) Parc Scientifique Agropolis II France Dept. of Virology ARO The Volcani Center Bet Dagan Israel Beratungsgruppe Entwicklungsorientierte Agrarforschung (BEAF) Bonn Germany Dept. of Crop Protection Extension Service Ministry of Agriculture and Rural Development Tel Aviv Israel National Food Safety & Toxicology Center Michigan State University East Lansing Center for Minor Crop Pest Management Rutgers University New Brunswick USA ARS/USDA Beltsville USA Dept. of Entomology and Interdepartmental Graduate Program in Genetics University of California Riverside USA Dept. of Virology Wageningen Agricultural University ES Wageningen The Netherlands Dept. of Entomology ARO The Volcani Center Bet Dagan Israel Dept. of Theoretical Production Ecology Wageningen Agricultural University ES Wageningen The Netherlands Dept. of Entomology University of California Davis USA Dept. of Plant Sciences Tel-Aviv University Tel Aviv Israel Inst. of Plant Biochemistry Consejo

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Arsenal ship program certification plan

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NAVAL ENGINEERS JOURNAL 1998年第1期110卷 249-261页

作者： Arntson, S Lind, W Turner, JJ Blaiklock, WC Tedesco, M Stephen G. Arntson is an independent consultant. A degree Naval Architect he has over 38 years of experience in the design construction and maintenance of surface ships. His experience includes 28 yeus with the Naval Sea Systems Command Naval Ship Engineering Centerl Bureau of Ships specializing in the structural design of Naval surface ships and 7 years with ABS Specializing in the application of commercial ship design practices. Most recently he worked with both NASSCO and ABS MZ the Arsenal Ship Program. Steve was very active with the Ships Structure Committee in developing R&D programs for ship structure and he is a member of the ASNE Journal Committee. Steve received a BS in Mechanical Engineering (Naval Architecture Option) from Virginia Polytechnic Institute in 1964. He is a member of the ASNE TAU BETA PI PI TAU SIGMA and PHI KAPPA PHI. William 1. Lind joined ABS in 1992 after ten years with Sparkman and Stephens Inc. He is currently ABS Amekas Manager of Engineering jm New Orleans and Cleveland. Both ofices conduct plan reviews for militavy commercial and private marine craft fm self-propelled vessels under 300 feet in length and bargus unlimited in length. As Vice-Chaimn ojthe Western Rivers Technical Committee Great Lakes Technical Committee and the Small Vessel Committee Bill participated in the writing of the 1997 ABS Guide for Building and Classing High Speed Craft and the 1997 ABS Rules for Building and Classing Steel Vessels Under 9OM. Bill received an MBA from Florida Atlantic University in 1995 a BS in Mechanical Engineering from New York Institute of Technology in 1986 and a BA in Histoy from Colgate University in 1976. He is Chaimn of SNAME HS-9 Composite Panel Testing & Fire Protection and a member of ASNE. John J. Turner is Senior Vice President of SYNTEK Technologies Inc. in Arlington Virginia. SYNTEK specializes in activities of a highly technical nature supporting both industry and government in domestic and international markets. He is a registered Professional Engineer

The Defense Advanced Research Project Agency (DARPA), in conjunction with the U.S. Navy, initiated a research program for the design and construction of a distinctive warship for the 21st century known as the Arsenal Ship. By using an innovative development and acquisition approach it was hoped to streamline the procurement process and reduce costs. In an environment where budgets are being cut, both industry and Government were challenged to develop, design, and produce the innovative ship and related mission systems to meet specific performance capabilities within strict affordability constraints. A key element of this innovative acquisition approach was a new certification scheme designed to replace the traditional test and evaluation (T&E) and acceptance process. The purpose of this paper is to describe the development of the certification plan during Phase LI of the Arsenal Ship program by the American Bureau of Shipping and the contending Shipyard teams, and to discuss the potential benefits of this alternative certification approach. Although the Arsenal Ship program was canceled late in 1997, insight derived from the exploration of new certification concepts could benefit future design and building programs.

关键词： Warships

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