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Статті в журналах з теми "On-line process control"
Sedillot, S. "Distributed On-line Digitized Control Architectures for Process Control." IFAC Proceedings Volumes 18, no. 11 (September 1985): 575–80. http://dx.doi.org/10.1016/s1474-6670(17)60186-1.
Повний текст джерелаFransson, Magnus, Anders Sparén, Bengt Lagerholm, and Lars Karlsson. "On-Line Process Control of Liquid Chromatography." Analytical Chemistry 73, no. 7 (April 2001): 1502–8. http://dx.doi.org/10.1021/ac001149w.
Повний текст джерелаPersson, W., W. Wendt, and H. Bertheussen. "On-line optical process control in steelmaking." JOM 41, no. 10 (October 1989): 17–19. http://dx.doi.org/10.1007/bf03220355.
Повний текст джерелаWeerapperuma, Dilrika, and Viraj de Silva. "ON-LINE ANALYZER APPLICATIONS FOR BNR PROCESS CONTROL." Proceedings of the Water Environment Federation 2004, no. 13 (January 1, 2004): 474–78. http://dx.doi.org/10.2175/193864704784137936.
Повний текст джерелаTanomaru, J., and S. Omatu. "Process control by on-line trained neural controllers." IEEE Transactions on Industrial Electronics 39, no. 6 (1992): 511–21. http://dx.doi.org/10.1109/41.170970.
Повний текст джерелаVan Der Linden, W. E. "Flow injection analysis in on-line process control." Analytica Chimica Acta 179 (1986): 91–101. http://dx.doi.org/10.1016/s0003-2670(00)84456-6.
Повний текст джерелаOsanlou, Ardeshir. "Holographic digital microscopy in on-line process control." Optical Engineering 50, no. 9 (September 1, 2011): 091312. http://dx.doi.org/10.1117/1.3605676.
Повний текст джерелаGong, Linguo, Wushong Jwo, and Kwei Tang. "Using On-Line Sensors in Statistical Process Control." Management Science 43, no. 7 (July 1997): 1017–28. http://dx.doi.org/10.1287/mnsc.43.7.1017.
Повний текст джерелаSchei, Tor Steinar. "ON-LINE ESTIMATION FOR PROCESS CONTROL AND OPTIMIZATION APPLICATIONS." IFAC Proceedings Volumes 40, no. 5 (2007): 19–28. http://dx.doi.org/10.3182/20070606-3-mx-2915.00053.
Повний текст джерелаWang, Min-Chiang, and Jinfeng Yue. "Economic design of process adjustment for on-line control." International Journal of Production Research 39, no. 5 (January 2001): 809–23. http://dx.doi.org/10.1080/00207540010009697.
Повний текст джерелаДисертації з теми "On-line process control"
Oisiovici, Ronia Marques. "Controle "on-line" de colunas de destilação em batelada de alta pureza." [s.n.], 2001. http://repositorio.unicamp.br/jspui/handle/REPOSIP/267512.
Повний текст джерелаTese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Quimica
Made available in DSpace on 2018-07-27T15:50:28Z (GMT). No. of bitstreams: 1 Oisiovici_RoniaMarques_D.pdf: 4098399 bytes, checksum: e53dcc32c80f82bc98dfe9a977ac5466 (MD5) Previous issue date: 2001
Resumo: Os processos em batelada são largamente empregados nas indústrias de Química Fina, produtos bioquímicos, polímeros e fármacos. As plantas em batelada tendem a crescer, já que esse tipo de configuração apresenta características que são desejáveis nas chamadas "plantas do futuro": flexibilidade operacional, resposta rápida às exigências do mercado, capacidade de processar produtos de alta pureza e alto valor agregado. A destilação em batelada, em particular, é a operação unitária mais freqüentemente utilizada nas plantas em batelada. Algumas dificuldades encontradas na sua automação são: fortes não-linearidades, desvios entre o modelo e o processo, ganhos variáveis no tempo, presença de ruídos nas medidas, analisadores de composição "on-line" complexos ou lentos, estimativa do estado do sistema dificil e cara em termos computacionais. O controle de colunas de destilação contínuas de alta pureza é um tópico bastante abordado na literatura. Porém, trabalhos sobre destilação em batelada de alta pureza são escassos e, normalmente, apenas simulações são apresentadas. Esse trabalho teve como objetivo o desenvolvimento de um sistema de controle por inferência para colunas de destilação em batelada de alta pureza robusto às dificuldades de automação encontradas na prática. O algoritmo de controle foi testado por simulação e, para confirmar a aplicabilidade do controlador desenvolvido, corridas experimentais foram realizadas numa coluna de destilação em batelada em escala piloto. Um Filtro de Kalman Estendido (FKE) para colunas de destilação em batelada foi desenvolvido para fornecer estimativas de composições instantâneas a partir de algumas medidas de temperatura. O FKE foi combinado a uma estratégia de controle baseada na estrutura GLC ("Globa1ly Linearizing Control"), resultando num sistema de controle por inferência que mantém constante a composição do produto de topo de colunas de destilação em batelada de alta pureza. O controlador GLC foi testado numa coluna de destilação em batelada em escala piloto com 29 pratos perfurados. As corridas experimentais foram realizadas com o sistema etanol/l-propanol. A interface entre o computador e o processo foi feita através de uma placa ADIDA. Termopares foram utilizados para medir temperaturas instantâneas em alguns estágios da coluna. A cada período de amostragem, o FKE fornece valores de composição instantâneos, utilizando os dados de temperatura lidos pelo computador. Com o objetivo de manter a pureza do produto de topo no valor especificado, o controlador GLC atualiza a razão de refluxo baseado nas estimativas mais recentes de composição. A razão de refluxo calculada é, então, implementada pelo computador que controla a posição e o tempo de abertura da válvula magnética de refluxo. O número de sensores e o intervalo de integração do modelo da coluna foram variáveis importantes no projeto do FKE. Convergência mais rápida e estimativas mais exatas foram obtidas aumentando-se o número de sensores e/ou reduzindo-se o intervalo de integração. No entanto, acima de um certo número de sensores, as melhorias na exatidão das estimativas são insignificantes. Nas corridas em malha fechada, a variável manipulada (razão de refluxo) apresentou um comportamento do tipo liga/desliga quando os sensores de temperatura foram posicionados nos estágios próximos ao topo da coluna, onde as variações de temperatura são pequenas. Afastando-se os sensores do topo da coluna, perfis mais suaves das variáveis manipulada e controlada foram observados e desvios inferiores a 0,2% entre a composição média do destilado estimada e a composição média do destilado medida foram obtidos. Para o controle da composição do destilado de alta pureza, os sensores devem ficar afastados do topo, mas não tão distantes a ponto de diminuir a exatidão das estimativas de composição. Devido à sua robustez em relação aos desvios entre o modelo e o processo, incerteza nas condições iniciais da coluna e a presença de ruídos nas medidas de temperatura, o controlador por inferência desenvolvido nesse trabalho, além de ser flexível, mostrou-se eficaz em aplicações práticas
Abstract: Batch processing has been widely used in the production of fine chemicaIs, biochemicals, polymers and phannaceuticals. Batch configurations present features which are desirable in the ca1led "future plants": flexibility of operation, rapid response to changing market demands, suitability for manufacturing high-quality and high value-added products. Batch distillation is the most frequent separation method in batch processes. Some ofthe challenges to be faced in the automation ofbatch plants are: pronounced nonHnearities, process/model mismatch, time varying process gains, presence of measurement noise, on-line sensors are unavailable or give delayed results, state estimation is difficult and computationally expensive. While the control of high-purity continuous distillation column is a subject often addressed in literature, there are very few papers regarding the control of high-purity batch distillation units. This work aimed to develop an inferential control system for high-purity batch distillation colurnns, which is able to cape with the automation difficulties common1yencountered in practice. The control algorithm was first tested by simulation and then experimental runs were carried out in a pilot-scale batch distillation column to confirm the practical appHcability ofthe designed inferential control system. An Extended Kalman Filter (EKF) for batch distillation columns was developed to provide fast and reHable instantaneous composition values from few temperature measurements. The EKF was then combined with a control strategy based on the Globally Linearizing Control (GLC) structure, resulting in an inferential control system for constant distillate operation of high-purity batch distillation columns. The GLC controller was tested in a pilot-scale batch distillation column with 29 sieve trays. The separation of ethanol/l-propanol mixtures were considered in the experimental runs. The interface between the computer and the process was achieved by an AD/DA converter. Thennocouples were used to measure instantaneous temperature values at some column stages. At each sampling period, the EKF provides instantaneous composition values from the temperature data the computer acquires. In order to keep the product quality at the set-point, the GLC controller updates the reflux ratio using the composition estimates, and the computer controls the position ofthe reflux magnetic valve to implement the calculated reflux ratio. The number of sensors and the model integration interval showed to be important variables in the design ofthe EKF. Faster convergence and more accurate estimates were obtained by increasing the number of sensors and/or reducing the integration intervalo However, above a certain number of sensors the improvement in the EKF performance may not be significant. Spiky reflux ratio profiles were observed when sensors were placed next to the top stages, where the temperature variations are small. As the sensors were placed further from the top stages, smoother manipulated and controlled variable profiles were obtained and the distillate product met the specified purity. The inferential control system achieved tight composition control. The selection of the sensors locations must be a trade-off between obtaining noise reduction and guaranteeing that the EKF will provide acceptable estimate accuracy. Due to its robustness with regards to plant model mismatch, uncertainty in the initial system state and measurement errors, the proposed inferential control scheme is flexible and demonstrated to be feasible for practical on-line applications
Doutorado
Sistemas de Processos Quimicos e Informatica
Doutor em Engenharia Química
Dowey, Stephen James. "Advanced on-line and off-line process control for surface-engineered applications." Thesis, University of Hull, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.310319.
Повний текст джерелаMyerscough, James John. "On-line geometric control of a spray deposition process." Thesis, University of Oxford, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.320688.
Повний текст джерелаBelger, I. S. "Real-time on-line control of a fermentation process." Thesis, Liverpool John Moores University, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.292336.
Повний текст джерелаGuh, Ruey-Shiang. "On-line statistical process control : a hybrid intelligent approach." Thesis, University of Nottingham, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.311818.
Повний текст джерелаHa, Sungdo. "On-line control of process uniformity using categorized variabilities." Thesis, Massachusetts Institute of Technology, 1993. http://hdl.handle.net/1721.1/12335.
Повний текст джерелаMontgomery, Paul Anthony. "On-line optimisation of a multivariable fed-batch fermentation process." Thesis, Liverpool John Moores University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.252788.
Повний текст джерелаZhang, Jie. "Expert systems in on-line process control and fault diagnosis." Thesis, City University London, 1991. http://openaccess.city.ac.uk/7682/.
Повний текст джерелаFronimidis, Dimitris. "On-line monitoring and control of the injection moulding process." Thesis, University of Bath, 2007. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.436877.
Повний текст джерелаNaghdy, G. "Identification, modelling and on-line computer control of a wastewater treatment process." Thesis, University of Portsmouth, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.370913.
Повний текст джерелаКниги з теми "On-line process control"
Nichols, Gary D. On-line process analyzers. New York: John Wiley & Sons, 1988.
Знайти повний текст джерелаBastin, G. On-line estimation and adaptive control of bioreactors. Amsterdam: Elsevier, 1990.
Знайти повний текст джерелаSrivastava, M. S. On Taguchi's on-line control procedures with measurement error. Toronto: University of Toronto, Dpt. of Statistics, 1991.
Знайти повний текст джерелаA, Holmes Gale, Parnas Richard S, Hunston Donald L, and National Institute of Standards and Technology (U.S.), eds. Industry Workshop for On-line Composite Process Monitoring. Gaithersburg, MD: U.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology, 1997.
Знайти повний текст джерелаA, Holmes Gale, Parnas Richard S, Hunston Donald L, and National Institute of Standards and Technology (U.S.), eds. Industry Workshop for On-line Composite Process Monitoring. Gaithersburg, MD: U.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology, 1997.
Знайти повний текст джерелаA, Holmes Gale, Parnas Richard S, Hunston Donald L, and National Institute of Standards and Technology (U.S.), eds. Industry Workshop for On-line Composite Process Monitoring. Gaithersburg, MD: U.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology, 1997.
Знайти повний текст джерелаA, Holmes Gale, Parnas Richard S, Hunston Donald L, and National Institute of Standards and Technology (U.S.), eds. Industry Workshop for On-line Composite Process Monitoring. Gaithersburg, MD: U.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology, 1997.
Знайти повний текст джерелаSrivastava, M. S. Taguchi's on-line control procedures and some improvements. Toronto: University of Toronto, Dept. of Statistics, 1991.
Знайти повний текст джерелаSrivastava, M. S. An improved version of Taguchi's on-line control procedure. Toronto: University of Toronto, Dept. of Statistics, 1991.
Знайти повний текст джерелаAnnino, Raymond. Process gas chromatography: Fundamentals andapplications : on-line analysis for process monitoring and control. Research Triangle Park, NC: Instrument Society of America, 1992.
Знайти повний текст джерелаЧастини книг з теми "On-line process control"
Antoch, Jaromír, and Daniela Jarušková. "On-Line Statistical Process Control." In Contributions to Statistics, 87–124. Heidelberg: Physica-Verlag HD, 2002. http://dx.doi.org/10.1007/978-3-642-48710-1_2.
Повний текст джерелаSchügerl, Karl. "On-Line Process Analysis for Bioreactor Control." In Precision Process Technology, 503–15. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1759-3_39.
Повний текст джерелаVersteeg, H. J., and H. J. Boonstra. "On-line Reactor Monitoring for Precision Process Control." In Precision Process Technology, 601–10. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1759-3_46.
Повний текст джерелаSandmeier, E. P., J. Keller, E. Heinzle, I. J. Dunn, and J. R. Bourne. "Development of an On-Line Pyrolysis Mass Spectrometry System for the On-Line Analysis of Fermentations." In Mass Spectrometry in Biotechnological Process Analysis and Control, 209–15. Boston, MA: Springer US, 1987. http://dx.doi.org/10.1007/978-1-4757-0169-2_16.
Повний текст джерелаFergus, Jeffrey W. "Sensors for On-Line Monitoring of Molten Metal Quality." In Sensors, Sampling, and Simulation for Process Control, 15–26. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2011. http://dx.doi.org/10.1002/9781118061800.ch2.
Повний текст джерелаCox, Raimond Peter. "Membrane Inlets for on-Line Liquid-Phase Mass Spectrometric Measurements in Bioreactors." In Mass Spectrometry in Biotechnological Process Analysis and Control, 63–74. Boston, MA: Springer US, 1987. http://dx.doi.org/10.1007/978-1-4757-0169-2_6.
Повний текст джерелаZhang, Lifeng, Anping Dong, and Shusen Li. "Analysis of the Transient Phenomena during Steel Continuous Casting through the On-line Detection Data." In Sensors, Sampling, and Simulation for Process Control, 155–62. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2011. http://dx.doi.org/10.1002/9781118061800.ch18.
Повний текст джерелаShetty, Devdas, Noreffendy Tamaldin, Claudio Campana, and Jun Kondo. "Utilizing Neural Network for Mechatronics, On-line Inspection And Process Control." In E-Manufacturing: Business Paradigms and Supporting Technologies, 183–94. Boston, MA: Springer US, 2004. http://dx.doi.org/10.1007/978-1-4419-8945-1_19.
Повний текст джерелаNielsen, J., K. Nikolajsen, and J. Villadsen. "Computer Controlled System for On-line Monitoring of a Fermentation Process." In Computer Applications in Fermentation Technology: Modelling and Control of Biotechnological Processes, 53–57. Dordrecht: Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-1141-3_7.
Повний текст джерелаRichards, Anthony O’L, Stephen H. Stanley, and Howard Dalton. "On-Line Mass Spectrometry in the Analysis of Eight Gases During the Microbial Oxidation of Gaseous Hydrocarbons." In Mass Spectrometry in Biotechnological Process Analysis and Control, 163–77. Boston, MA: Springer US, 1987. http://dx.doi.org/10.1007/978-1-4757-0169-2_13.
Повний текст джерелаТези доповідей конференцій з теми "On-line process control"
Morgan, K. E. "Robotics for on-line tinplating process control." In International Conference on Control '94. IEE, 1994. http://dx.doi.org/10.1049/cp:19940159.
Повний текст джерелаEl Ata-doss, S., and J. Brunet. "On-line expert supervision for process control." In 1986 25th IEEE Conference on Decision and Control. IEEE, 1986. http://dx.doi.org/10.1109/cdc.1986.267385.
Повний текст джерелаParten, Michael E., R. R. Rhinehart, and Vikram Singh. "On-line process-model-based control of a plasma etcher." In Process Module Metrology, Control and Clustering, edited by Cecil J. Davis, Irving P. Herman, and Terry R. Turner. SPIE, 1992. http://dx.doi.org/10.1117/12.56639.
Повний текст джерелаBomse, David S., D. Christian Hovde, Daniel B. Oh, Joel A. Silver, and Alan C. Stanton. "Diode laser spectroscopy for on-line chemical analysis." In SPIE's 1992 Symposium on Process Control and Monitoring, edited by David S. Bomse, Harry Brittain, Stuart Farquharson, Jeremy M. Lerner, Alan J. Rein, Cary Sohl, Terry R. Todd, and Lois Weyer. SPIE, 1992. http://dx.doi.org/10.1117/12.137730.
Повний текст джерелаMondek, Martin, and Martin Hromcik. "On-line on-board wind estimation system for small UAVs." In 2015 20th International Conference on Process Control (PC). IEEE, 2015. http://dx.doi.org/10.1109/pc.2015.7169991.
Повний текст джерелаVachalek, Jan. "On-line identification using hybrid method of regularized exponential forgetting." In 2013 International Conference on Process Control (PC). IEEE, 2013. http://dx.doi.org/10.1109/pc.2013.6581419.
Повний текст джерелаDuffy, Gerrad, Peter Mills, Qin Li, and Ljubo Vlacic. "An on-line process dead-time estimation algorithm." In 2017 11th Asian Control Conference (ASCC). IEEE, 2017. http://dx.doi.org/10.1109/ascc.2017.8287191.
Повний текст джерелаSeo, Jaho, Amir Khajepour, Jan P. Huissoon, and Young-Jun Park. "On-Line Thermal Control for Injection Moulding Process." In ASME 2013 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/detc2013-12570.
Повний текст джерелаVickers, Thomas J., and Charles K. Mann. "On-line monitoring by Raman spectroscopy: instrument control and calibration." In Optical Sensing for Environmental and Process Monitoring, edited by Ishwar D. Aggarwal, Stuart Farquharson, and Eric Koglin. SPIE, 1995. http://dx.doi.org/10.1117/12.199670.
Повний текст джерелаTao Yu and Gaoshan Wang. "Research of on-line process quality control system." In 2008 IEEE International Conference on Automation and Logistics (ICAL). IEEE, 2008. http://dx.doi.org/10.1109/ical.2008.4636174.
Повний текст джерелаЗвіти організацій з теми "On-line process control"
Bruce W. Noel. A DEVELOPMENT OF ON-LINE TEMPERATURE MEASUREMENT INSTRUMENTATION FOR GASIFICATION PROCESS CONTROL. Office of Scientific and Technical Information (OSTI), November 2001. http://dx.doi.org/10.2172/812532.
Повний текст джерелаBruce W. Noel. A DEVELOPMENT OF ON-LINE TEMPERATURE MEASUREMENT INSTRUMENTATION FOR GASIFICATION PROCESS CONTROL. Office of Scientific and Technical Information (OSTI), November 2002. http://dx.doi.org/10.2172/829605.
Повний текст джерелаBruce W. Noel. A DEVELOPMENT OF ON-LINE TEMPERATURE MEASUREMENT INSTRUMENTATION FOR GASIFICATION PROCESS CONTROL. Office of Scientific and Technical Information (OSTI), October 2000. http://dx.doi.org/10.2172/813680.
Повний текст джерелаBruce W. Noel. A DEVELOPMENT OF ON-LINE TEMPERATURE MEASUREMENT INSTRUMENTATION FOR GASIFICATION PROCESS CONTROL. Office of Scientific and Technical Information (OSTI), April 2001. http://dx.doi.org/10.2172/813681.
Повний текст джерелаBruce W. Noel. A DEVELOPOMENT OF ON-LINE TEMPERATURE MEASUREMENT INSTRUMENTATION FOR GASIFICATION PROCESS CONTROL. Office of Scientific and Technical Information (OSTI), April 2003. http://dx.doi.org/10.2172/820871.
Повний текст джерелаPope, N. G., and S. F. Marsh. An improved, computer-based, on-line gamma monitor for plutonium anion exchange process control. Office of Scientific and Technical Information (OSTI), June 1987. http://dx.doi.org/10.2172/6388890.
Повний текст джерелаMarsh, S. F., and M. C. Miller. Plutonium process control using an advanced on-line gamma monitor for uranium, plutonium, and americium. Office of Scientific and Technical Information (OSTI), May 1987. http://dx.doi.org/10.2172/6531128.
Повний текст джерелаAndre' Moreau, Martin Lord, Daniel Levesqure, Marc Dubois, Jean Bussiere, Jean-Pierre Monchalin, Christian Padioleau, et al. AISI/DOE Advanced Process Control Program Vol. 4 of 6: ON-LINE, NON-DESTRUCTIVE MECHANICAL PROPERTY MEASUREMENT USING LASER-ULTRASOUND. Office of Scientific and Technical Information (OSTI), March 2001. http://dx.doi.org/10.2172/794988.
Повний текст джерелаLi, Hong, Gregory F. Piepel, Charles F. Windisch, Yali Su, and Michael L. Elliott. Feasibility Study of Using High-Temperature Raman Spectroscopy for On-Line Monitoring and Product Control of the Glass Vitrification Process. Office of Scientific and Technical Information (OSTI), December 1998. http://dx.doi.org/10.2172/965242.
Повний текст джерелаWindisch, C. F. Jr, G. F. Piepel, H. Li, M. L. Elliott, and Y. Su. Feasibility Study of Using High-Temperature Raman Spectroscopy for On-Line Monitoring and Product Control of the Glass Vitrification Process. Office of Scientific and Technical Information (OSTI), January 1999. http://dx.doi.org/10.2172/2520.
Повний текст джерела