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Dissertations / Theses on the topic 'Real-Time Process Optimization'

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Published: 7 June 2025
Last updated: 2 August 2025

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1

Chaudhary, Muhammad Nadeem Rafique. "Real time optimization of chemical processes." Thesis, Curtin University, 2009. http://hdl.handle.net/20.500.11937/1419.

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Due to current changes in the global market with increasing competition, strict bounds on product specifications, pricing pressures, and environmental issues, the chemical process industry has a high demand for methods and tools that enhance profitability by reducing the operating costs using limited resources. Real time optimization (RTO) strategies combine process control and economics, and have gone through much advancement during the last few decades. A typical real time optimization application is model based and requires the solution of at least three (usually) nonlinear programming prob
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2

Benndorf, Jörg, and Mike Buxton. "Real-Time Mining - a framework for continuous process control and optimization." Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola", 2018. http://nbn-resolving.de/urn:nbn:de:bsz:105-qucosa-231071.

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The flow of information, and consequently the decision-making along the chain of mining from exploration to beneficiation, typically occurs in a discontinuous fashion over long timespans. In addition, due to the uncertain nature of the knowledge about deposits and the inherent spatial distribution of material characteristics, actual production performance often deviates from expectations. Reconciliation exercises to adjust mineral resource and reserve models and planning assumptions are performed with timely lags of weeks, months or even years.
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3

Benndorf, Jörg, and Mike Buxton. "Real-Time Mining - a framework for continuous process control and optimization." TU Bergakademie Freiberg, 2017. https://tubaf.qucosa.de/id/qucosa%3A23172.

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The flow of information, and consequently the decision-making along the chain of mining from exploration to beneficiation, typically occurs in a discontinuous fashion over long timespans. In addition, due to the uncertain nature of the knowledge about deposits and the inherent spatial distribution of material characteristics, actual production performance often deviates from expectations. Reconciliation exercises to adjust mineral resource and reserve models and planning assumptions are performed with timely lags of weeks, months or even years.
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4

Tosukhowong, Thidarat. "Dynamic Real-time Optimization and Control of an Integrated Plant." Diss., Georgia Institute of Technology, 2006. http://hdl.handle.net/1853/14087.

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Applications of the existing steady-state plant-wide optimization and the single-scale fast-rate dynamic optimization strategies to an integrated plant with material recycle have been impeded by several factors. While the steady-state optimization formulation is very simple, the very long transient dynamics of an integrated plant have limited the optimizers execution rate to be extremely low, yielding a suboptimal performance. In contrast, performing dynamic plant-wide optimization at the same rate as local controllers requires exorbitant on-line computational load and may increase the sensiti
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5

Graciano, José Eduardo Alves. "Real time optimization in chemical process: evaluation of strategies, improvements and industrial application." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/3/3137/tde-12072016-094348/.

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The increasing economic competition drives the industry to implement tools that improve their processes efficiencies. The process automation is one of these tools, and the Real Time Optimization (RTO) is an automation methodology that considers economic aspects to update the process control in accordance with market prices and disturbances. Basically, RTO uses a steady-state phenomenological model to predict the process behavior, and then, optimizes an economic objective function subject to this model. Although largely implemented in industry, there is not a general agreement about the benefit
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6

Rajendran, Ajith, and Gautham Asokan. "Real Time Monitoring of Machining Process and Data Gathering for Digital Twin Optimization." Thesis, KTH, Industriell produktion, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-301594.

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In the development stages of a Digital twin of production assets, especially machine tools, real time process monitoring and data gathering proves to be vital. Having a monitoring system that monitors and updates the operators or managers in real time, helps improve productivity in terms of reducing downtime through predictive/preventive analytics and by incorporating in process quality assessment capabilities. When it comes to Real time monitoring of machine tools andprocesses, sensor technologies have proven to be the most effective and widely researched. Years of research and development ha
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7

Zanin, Antônio Carlos. "Implementação industrial de um otimizador em tempo real." Universidade de São Paulo, 2001. http://www.teses.usp.br/teses/disponiveis/3/3137/tde-06082001-150353/.

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Esta tese descreve o desenvolvimento e implementação de um otimizador em tempo real da operação do conversor da unidade de craqueamento catalítico em leito fluidizado (FCC) da refinaria Henrique Lage localizada em São José dos Campos. É desenvolvida uma estratégia de otimização integrada ao controlador preditivo cuja função objetivo e restrições incorporam componentes dinâmicos e estáticos. Os problemas de controle multivariável e otimização econômica são resolvidos simultaneamente num mesmo algoritmo. É utilizado um modelo rigoroso do processo para determinar as condições econômicas ótimas d
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8

Schultz, Eduardo dos Santos. "A importância do ponto de operação nas técnicas de self-optimizing control." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2015. http://hdl.handle.net/10183/127932.

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A otimização de processos vem se tornando uma ferramenta fundamental para o aumento da lucratividade das plantas químicas. Diversos métodos de otimização foram propostos ao longo dos anos, sendo que a otimização em tempo real (RTO) é a solução mais consolidada industrialmente, enquanto que o self-optimizing control (SOC) surge como uma alternativa simplificada, com um menor custo de implantação em relação a esse. Neste trabalho são estudados diversos aspectos da metodologia de SOC, iniciando pela análise do impacto do ponto de operação para o desenvolvimento de estruturas de controle auto-otim
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9

Yélamos, Ruiz Ignacio. "A global approach for supporting operators' decision-making dealing with plant abnormal events." Doctoral thesis, Universitat Politècnica de Catalunya, 2008. http://hdl.handle.net/10803/6465.

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El alto grado de automatización adquirido en las plantas químicas durante las últimas décadas hace que las tareas de supervisión sean ahora más complejas y delicadas. Esta supervisión requiere de sistemas y herramientas sofisticadas que puedan sacar provecho de los módulos de adquisición de información instalados en planta. Así, el preciso seguimiento de las variables de proceso o la fácil operatividad de los procesos, gracias a los sistemas de control regulatorio actuales, son aspectos relevantes que deben ser contemplados a la hora de dar una respuesta global a las desviaciones del régimen n
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10

García, Lina Marcela Palacio. "Metodologias de análise de dados para um sistema de otimização em tempo real." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/3/3137/tde-01082013-161137/.

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A otimização em tempo real (RTO: Real Time Optimization) permite fazer correções, com o menor atraso possível, nas condições de operação de um processo, buscando manter um desempenho ótimo. A RTO, na abordagem clássica, requer um ciclo constante de análise e correção do estado do processo que inclui múltiplas etapas: i) identificação do estado estacionário, ii) identificação e correção dos erros grosseiros, iii) reconciliação dos dados, iv) ajuste dos parâmetros do modelo, v) estimação das condições operacionais ótimas e, vi) implementação das condições no sistema de controle. Um sistema de an
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11

Santos, Marcela G. Mota dos. "Controle e otimização em tempo real de um reator trifasico." [s.n.], 2006. http://repositorio.unicamp.br/jspui/handle/REPOSIP/267499.

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Orientadores: Rubens Maciel Filho, Eduardo Coselli Vasco de Toledo<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Quimica<br>Made available in DSpace on 2018-08-07T10:33:28Z (GMT). No. of bitstreams: 1 Santos_MarcelaG.Motados_D.pdf: 1519927 bytes, checksum: 9ed575105854208c7e8d99f024c4128a (MD5) Previous issue date: 2006<br>Resumo: O objetivo principal deste trabalho foi a avaliação de estratégias de controle clássicas e hierárquicas em tempo real. Utilizou-se como estudo de caso a hidrogenação de o-cresol em reator de lama catalítico trifásico com catalisad
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12

Ballit, Abbass. "Design and manufacturing process optimization for prosthesis of the lower limb." Thesis, Compiègne, 2020. http://www.theses.fr/2020COMP2589.

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Le socket prothétique (dit aussi emboiture prothétique), élément d'interface essentiel entre le moignon du patient et le dispositif prothétique, est le plus souvent le lieu où se définit le degré de réussite prothétique. C'est la partie la plus critique de la prothèse, personnalisée pour s'adapter au membre résiduel unique de l'amputé. Sans une forme et un ajustement approprié du socket, la prothèse devient inconfortable, voire inutilisable, et provoque des douleurs et des problèmes de peau. La production prothétique actuelle manque encore de normes numériques universelles pour concevoir un so
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13

Plassart, Stéphan. "Optimisation en-ligne pour les systèmes dynamiques en temps-réel." Thesis, Université Grenoble Alpes, 2020. http://www.theses.fr/2020GRALM017.

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La consommation d'énergie est un enjeu crucial pour les systèmes temps réel,c'est pourquoi l'optimisation en ligne, c'est-à-dire pendant l'exécution du processeur, est devenue essentielle et sera le but de cette thèse.Cette optimisation se fait en adaptant la vitesse du processeur lors de l'exécution des tâches.Cette thèse aborde plusieurs situations avec des connaissances différentes sur les caractéristiques des tâches passées, actuelles et futures.Tout d'abord, nous considérons que toutes les caractéristiques des tâches sont connues (le cas hors ligne),et nous proposons un algorithme linéair
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14

Bousbia-Salah, Ryad. "Optimisation dynamique en temps-réel d’un procédé de polymérisation par greffage." Thesis, Université de Lorraine, 2018. http://www.theses.fr/2018LORR0242/document.

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D'une manière schématique, l'optimisation dynamique de procédés consiste en trois étapes de base : (i) la modélisation, dans laquelle un modèle (phénoménologique) du procédé est construit, (ii) la formulation du problème, dans laquelle le critère de performance, les contraintes et les variables de décision sont définis, (iii) et la résolution, dans laquelle les profils optimaux des variables de décision sont déterminés. Il est important de souligner que ces profils optimaux garantissent l'optimalité pour le modèle mathématique utilisé. Lorsqu'ils sont appliqués au procédé, ces profils ne sont
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15

Teng, Sin Yong. "Intelligent Energy-Savings and Process Improvement Strategies in Energy-Intensive Industries." Doctoral thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-433427.

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S tím, jak se neustále vyvíjejí nové technologie pro energeticky náročná průmyslová odvětví, stávající zařízení postupně zaostávají v efektivitě a produktivitě. Tvrdá konkurence na trhu a legislativa v oblasti životního prostředí nutí tato tradiční zařízení k ukončení provozu a k odstavení. Zlepšování procesu a projekty modernizace jsou zásadní v udržování provozních výkonů těchto zařízení. Současné přístupy pro zlepšování procesů jsou hlavně: integrace procesů, optimalizace procesů a intenzifikace procesů. Obecně se v těchto oblastech využívá matematické optimalizace, zkušeností řešitele a pr
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16

Bousbia-Salah, Ryad. "Optimisation dynamique en temps-réel d’un procédé de polymérisation par greffage." Electronic Thesis or Diss., Université de Lorraine, 2018. http://www.theses.fr/2018LORR0242.

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D'une manière schématique, l'optimisation dynamique de procédés consiste en trois étapes de base : (i) la modélisation, dans laquelle un modèle (phénoménologique) du procédé est construit, (ii) la formulation du problème, dans laquelle le critère de performance, les contraintes et les variables de décision sont définis, (iii) et la résolution, dans laquelle les profils optimaux des variables de décision sont déterminés. Il est important de souligner que ces profils optimaux garantissent l'optimalité pour le modèle mathématique utilisé. Lorsqu'ils sont appliqués au procédé, ces profils ne sont
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17

Vemuri, Yagna Jyothy Palanki Srinivas. "Real-time optimization of semi-batch reactors." 2004. http://etd.lib.fsu.edu/theses/available/etd-05072004-210546.

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Thesis (Ph. D.)--Florida State University, 2004.<br>Advisor: Dr. Srinivas Palanki, Florida State University, College of Engineering, Dept. of Chemical Engineering. Title and description from dissertation home page (viewed Oct. 06, 2004). Includes bibliographical references.
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18

Rossi, F., F. Manenti, Iqbal M. Mujtaba, and G. Bozzano. "A novel real-time methodology for the simultaneous dynamic optimization and optimal control of batch processes." 2014. http://hdl.handle.net/10454/10777.

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No<br>A novel threefold optimization algorithm is proposed to simultaneously solve the nonlinear model predictive control and dynamic real-time optimization for batch processes while optimizing the batch operation time. Object-oriented programming and parallel computing are exploited to make the algorithm effective to handle industrial cases. A well-known literature case is selected to validate the algorithm.
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19

Whiteside, Benjamin R., Elaine C. Brown, Y. Ono, C. K. Jen, and Philip D. Coates. "Real-time ultrasonic diagnosis of polymer degradation and filling incompleteness in micromoulding." 2005. http://hdl.handle.net/10454/3824.

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No<br>Injection moulding techniques have been miniaturised and refined to achieve micromoulding which aims to satisfy the need for mass production of low-cost micro- and nanoscale components. However, the microscale mould cavity features and extreme processing conditions which are inherent in the process can result in larger process variations than conventional injection moulding, with a corresponding increase in the probability of producing an unsatisfactory product. Accurate process diagnosis is required to ensure process reliability but integration of sensors onto the small and highly detai
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20

Reis, Daniella Clare Smith. "Mining 4.0 - Aplicação a uma exploração de massa mineral a céu aberto." Master's thesis, 2021. http://hdl.handle.net/10316/97271.

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Dissertação de Mestrado em Engenharia Geológica e de Minas apresentada à Faculdade de Ciências e Tecnologia<br>Na presente dissertação, irão ser procuradas soluções para aplicar numa pedreira a céu aberto através de tecnologias 4.0. O trabalho terá como um dos objetivos demonstrar como se pode transformar uma pedreira tecnologicamente falando. Assim de forma a demonstrar como tal pode ser feito irá ser feita uma investigação bibliográfica acompanhada da recolha de alguns dados na pedreira de Vale Longo, em Penela, local no qual será o Caso de estudo no decorrer desta dissertação.Uma das medida
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