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第36届中国控制会议

作者： Haijuan Zhao Yugang Niu Tinggang Jia Key Laboratory of Advanced Control and Optimization for Chemical Process(East China University of Science and Technology) Ministry of Education Automation Division of Shanghai Electric Group Co. Ltd.

ISBN: (纸本)9781538629185

In this paper,the finite-time boundedness（FTB） problem of sliding mode control（SMC） is investigated for a class of switched delay systems subject to uncertain parameter and nonlinear perturbation.A SMC law is constructed to drive the state trajectories onto the integral sliding surface during a finite time *** FTB of the controlled systems on both reaching phase and siding motion phase are analyzed by means of average dwell time ***,a numerical example is given.

关键词： Switched delay system Finite time boundedness Sliding mode control Average dwell time

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Investigation for sustainable polymers - Insights for the use of glycerol as a biorefinery product for the synthesis of monomers and polymers

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Chemical Engineering Transactions 2018年 65卷 703-708页

作者： Assumpção, Daniel C. Barbosa, Maria Ingrid R. Mariano, Adriano P. Jardini, André Maciel, Maria Regina W. Filho, Rubens Maciel University of Campinas School of Chemical Engineering Laboratory of Optimization Design and Advanced Process Control Bioen Division Av. Albert Einstein 500 Campinas SP Brazil National Institute of Science and Technology in Biofabrication - BIOFABRIS Av. Albert Einstein 500 Campinas SP Brazil

ISBN: (纸本)9788895608624

The use of bio-based resources for the production of added value products has become a key element of sustainable development. In this regard, biorefinery is a recognized approach to transforming renewable feedstocks into fuels, chemicals, and materials. However, the integration of chemicals production into current biorefineries is challenging. This route is the least developed and most complex of all biorefinery operations and bio-based chemicals suffer from direct competition with oil-based counterparts. Additionally, the overabundance of targets makes difficulty the decision making for companies. As such, there is a need to identify a core group of primary chemicals and secondary intermediates analogous to those in the petrochemical industry, including products with well-established value chains. To address some of these challenges, this work intends to contribute with ideas for the use of glycerol as a feedstock for polymers production. These polymers may be produced directly from glycerol or from some organic acid derived from glycerol. Such organic acids are in general flexible building blocks which may result in polymers for several applications, such as packaging materials and textile fibers, insulation foam, electronics and car parts. Among organic acids, succinic acid and lactic acid has a great potential to be used in the production of specialty polymers for medical implants because these materials can combine biodegradability with biocompatibility. Bearing this in mind, potential conversion routes of glycerol to lactic acid-derived specialty polymers are discussed in this work. Copyright © 2018, AIDIC Servizi S.r.l.

关键词： Lactic acid

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An energy efficient clustering and relay node selection algorithm in wireless sensor networks 35

An energy efficient clustering and relay node selection algo...

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第35届中国控制会议

作者： HU Yuan JIA Tinggang NIU Yugang Key Laboratory of Advanced Control and Optimization for Chemical Process of Ministry of Education (East China University of Science and Technology) Automation Division of Shanghai Electric Group Co. Ltd.

ISBN: (纸本)9781509009107

Wireless sensor networks utilize large numbers of sensors to perform sensing and forwarding tasks in the monitoring *** to the resources constraints of sensors and the energy efficiency QoS requirement,prolonging the network lifetime is a major concern in *** is an efficient approach to reduce energy consumption since it can reduce data transmission of the *** most traditional clustering protocols,the cluster heads（CHs） aggregate the coming data from their cluster members（CMs） and send the aggregated data to the remote sink node directly or visa other ***,assigning a node to serve as CHs and relay nodes simultaneously may result in unbalanced energy *** energy efficient overlapping clustering and relay node selection algorithm is proposed,which selects different nodes as CHs and relay node to attain the balancing of energy consumption of the network.A direction fitness metric is designed to select the proper boundary nodes in the overlapping area to serve as relay *** results show that the proposed algorithm significantly prolongs the network lifetime.

关键词： Wireless sensor networks energy efficiency clustering relay nodes multi-hop

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Cultivation of three microalgae strains under mixotrophic conditions for biodiesel production

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Chemical Engineering Transactions 2016年 50卷 409-414页

作者： Rios, Luisa F. Da Silva Soares, Carla Tasić, Marija B. Maciel, Maria R. Wolf Filho, Rubens Maciel University of Campinas Chemical Engineering Faculty Laboratory of Optimization Design and Advanced Process Control-Bioen Division Av. Albert Einstein 500 Campinas SP Brazil Faculty of Technology University of Niš Bulevar oslobodjenja 124 Leskovac16000 Serbia

ISBN: (纸本)9788895608419

Microalgal biomass have a potential to be used as feedstock for biodiesel production because of high photosynthetic rates, high biomass production, faster growth in comparison to traditional feedstocks and to not be competitive with food production. In this paper, the growth and lipid content of three microalgae strains, namely Chorella vulgaris, Desmodesmus sp. and Desmodesmus brasiliensis, were studied during 9 days of mixotrophic cultivation. The laboratory scale experiments were carried out in BG-11 media enriched with 10 g/L glucose at initial medium pH of 7.5, temperature of 26 ± 4 °C and light flux of 62 μE m-2 s-1. The highest biomass concentration of 3.82 mg/mL was found in the Desmodesmus brasiliensis, followed with 3.64 mg/mL of Desmodesmus sp. and 3.32 mg/mL of Chorella vulgaris strain. However, the Desmodesmus brasiliensis had the lowest lipid content of 6%, followed with 13.2% of Chorella vulgaris, whereas the Desmodesmus sp. strain produced the highest lipids (19.45%). Copyright © 2016, AIDIC Servizi S.r.l.,.

关键词： Feedstocks

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Sliding mode control for T-S fuzzy stochastic systems with Markovian switching

Sliding mode control for T-S fuzzy stochastic systems with M...

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第三十三届中国控制会议

作者： Bei Chen Yugang Niu Tinggang Jia Central Academe Shanghai Electric Group Co.Ltd. Key Laboratory of Advanced Control and Optimization for Chemical Process(East China University of Science and Technology) Ministry of Education Automation Division Shanghai Electric Group Co.Ltd.

This paper is concerned with the sliding mode control(SMC)problem for a class of T-S fuzzy stochastic systems with Markovian *** purpose of the problem addressed is to integrate the SMC method such that,for all admissible parameter uncertainty,external disturbance and state-dependent noise,the closed-loop system is globally asymptotically ***,it is not required that each nominal local system model shares the same input channel,which is usually assumed in some existing *** is shown that both the reachability of sliding surfaces and the stability of sliding mode dynamics can be ensured.

关键词： Markovian jumping systems,State-dependent noise,T-S fuzzy model,Sliding mode control

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Sliding mode control for Markovian jumping systems subject to partially known transition rate

Sliding mode control for Markovian jumping systems subject t...

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第三十二届中国控制会议

作者： Bei Chen Tinggang Jia Yugang Niu Key Laboratory of Advanced Control and Optimization for Chemical Process(East China University of Science and Technology) Ministry of Education Automation Division Shanghai Electric Group Co.Ltd.

ISBN: (纸本)9781479900305

This paper investigates the problem of sliding mode control for a class of stochastic Markovian jumping systems with partially known transition rate.A key feature in this work is to relax the requirement that all the elements in transition rate matrix are known,which is usually encountered in some existing *** is shown that the reachability of the specified sliding surface can be ensured by the designed sliding mode ***,the suffcient conditions for the stability of the sliding motion on the sliding surface are also derived.

关键词： Markovian jumping systems incomplete transition rate state-dependent noise sliding mode control

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Moving horizon estimation and control for an industrial gas phase polymerization reactor

Moving horizon estimation and control for an industrial gas ...

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2007 American control Conference, ACC

作者： Hedengren, John D. Allsford, Kenneth V. Ramlal, Jasmeer Advanced Process Control and Optimization PAS Inc. 16055 Space Center Blvd Houston TX 77062 United States Sasol Polymers Division of Sasol Chemicals Industries Ltd. 56 Grosvenor Road Bryanston Randburg 2125 South Africa ExxonMobil and Honeywell

ISBN: (纸本)1424409888

Moving horizon estimation (MHE) has been applied to an industrial gas phase polymerization reactor to improve estimates of current states and parameters. MHE is compared to Implicit Dynamic Feedback (IDF)1. With MHE, there is improved estimation of unmodeled disturbances in the UNIPOLpolyethylene plant. The UNIPOLtechnology is licensed by Univation, a joint venture between ExxonMobil and Dow. The polymerization reactor and plant model is a large-scale set of differential and algebraic equations (DAEs) posed in open equation form. The DAE model is converted to algebraic equations by orthogonal collocation and solved with the MHE objective function in a simultaneous optimization. NOVA, an active-set sparse NLP solver, is used to converge the problem that has 46,870 variables, 18 complementarity conditions, and a Jacobian sparsity of 0.01%. This large, sparse optimization problem is initiated every 5 minutes to update the model as new plant measurements become available and prior to the control optimization. The same plant model is used for nonlinear model predictive control (MPC) with 10 manipulated variables (MVs) and 26 controlled variables (CVs). In this case, a significant advantage is that with MHE a simpler rigorous model suffices for the application of nonlinear MPC. © 2007 IEEE.

关键词： Model predictive control

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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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MATERIALS AND THE ENVIRONMENT

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MRS BULLETIN 1992年第3期17卷 26-26页

作者： WEISSMAN, SH SEKUTOWSKI, JC Process Optimization and Control Division Sandia National Laboratories Albuquerque USA Environmental and Materials Technology Department AT&T Bell Labs Princeton USA

We co-organized the first MRS technical symposium dealing with the environment at the 1991 Spring Meeting in Anaheim, California. Entitled “Environmentally Conscious Materials processing,” the symposium dealt with waste minimization, pollution prevention, alternative materials and processes, recovery and recycling, and chemical sensors for process stream monitoring. This symposium captured much interest among the press and the materials community. Because of the growing interest in the environment, the MRS Bulletin asked us to guest edit this special issue that deals with the interrelated areas of materials science and the *** recent years, environmental concern has heightened in the United States and around the world. Public concern was greatly raised by increased environmental awareness incidents such as the accident in Bhopal, India, and the oil spill in Alaska by the Exxon Valdez. As a result, U.S. companies are more concerned with public acceptance of their operations. In addition, manufacturers have been subject to increasingly stringent environmental legislation. Federal, state, and local legislation currently regulate air emissions, water discharges, occupational exposure, and treatment and disposal of various hazardous chemicals. In addition, the Montreal Protocol, an international agreement signed by the United States, regulates the production and use of halogenated organic compounds now known to deplete the Earth's ozone layer. Associated with these stringent environmental regulations are increasing waste-associated costs. Waste disposal costs are increasing at an annual rate of about 10%.

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ACCURACY REQUIREMENTS FOR MEASUREMENT SYSTEMS WITH UNIFORM AND NORMAL ERRORS

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NAVAL ENGINEERS JOURNAL 1993年第1期105卷 66-69页

作者： SNOW, JM STUCKMAN, BE USHER, JS Jeffrey M. Snow:received his B.S. degree in mechanical engineering from the University of Washington in 1977. He has worked at Boeing Commercial Aircraft Company and Puget Sound Naval Shipyard. Since 1985 he has been at Naval Surface Warfare Center Crane Division (NSWCC). From 1987 to 1990 he was in charge of quality assurance configuration management and reliability for Aegis (SPY-1 and Mk-99) microwave tubes. He currently is in the Radar System Branch at NSWCC. He is a member of ASQC and ASME. His areas of interest include the use of statistics in process improvement efforts and objectively rating and rewarding suppliers for better quality. Bruce E. Stuckman:holds a Ph.D. degree in systems engineering from Oakland University where he also obtained M.S. and B.S. degrees in electrical and computer engineering. In 1992 Dr. Stuckman obtained his J.D. from the University of Louisville where he graduated cum laude. He is currently an associate in the patent and computer law department of Brooks & Kushman a law firm specializing in intellectual property and technology related causes. Prior to this he was an associate professor of both electrical engineering at the University of Louisville and a member of the Research Advisory Board of the South Central Bell Telecommunications Research Center. Dr. Stuckman is the author of over 75 published works in a variety of research areas including global optimization algorithms control systems communication and telecommunication systems and instrumentation electronics. He has served as a technical consultant to such organizations as Control Data Corporation General Electric General Motors Research Laboratories Gulf & Western AT&T Bell Laboratories ARCO Research and Technical Services and the U.S. Government and has been a frequent lecturer at national and international symposia. He is a senior member of IEEE and a member of ASNE Eta Kappa Nu Tau Beta Pi Sigma Xi and Phi Kappa Phi. John S. Usher Ph.D. P.E.:is an assistant professor of industrial engineering

Accuracy requirements are usually determined as a percentage of the specification range of the measured part or process. Setting accuracy requirements in this manner results in a wide and unpredictable range of false rejection and acceptance probabilities. This causes extra costs due to either: 1) over specification of measurement systems accuracy requirements;2) time, effort, retesting, and resolution of false rejections;or 3) system degradation caused by false acceptance of out-of-specification parts. Achieving a consistent and known risk of false acceptance is only possible by considering the measured process C(pk), the process's mean in relation to the center of the specification range, and the measurement system error distribution. This paper presents a method for calculating the probabilities of false rejection and false acceptance for a normal process which is measured with, alternately, uniform and normally distributed error. It is shown that under most conditions uniform error causes 20% to 30% higher false rejection and acceptance probabilities. Thus, knowledge of measurement error distribution could provide lower total production cost.

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