Optimization Under Uncertainties
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. Statistics of the Pareto front in Multi-objective Optimization under Uncertainties
Abstract In this paper we address an innovative approach to determine the mean and a confidence interval for a set of objects analogous to curves and surfaces. The approach is based on the determination of the most representative member of the family by minimizing a Hausdorff distance. This method is applied to the analysis of uncertain Pareto frontiers in m
Lat. Am. j. solids struct.. Publicado em: 14/11/2018
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2. Multidisciplinary Design Optimization of UAV Under Uncertainty
ABSTRACT: Uncertainty-based multidisciplinary design optimization considers probabilistic variables and parameters and provides an approach to account for sources of uncertainty in design optimization. The aim of this study was to apply a decoupling uncertainty-based multidisciplinary design optimization method without any dependence on probability mathemati
J. Aerosp. Technol. Manag.. Publicado em: 2017-06
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3. Robust Optimal Adaptive Trajectory Tracking Control of Quadrotor Helicopter
Abstract This paper focuses on robust optimal adaptive control strategy to deal with tracking problem of a quadrotor unmanned aerial vehicle (UAV) in presence of parametric uncertainties, actuator amplitude constraints, and unknown time-varying external disturbances. First, Lyapunov-based indirect adaptive controller optimized by particle swarm optimization
Lat. Am. j. solids struct.. Publicado em: 2017-06
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4. Control of uncertainties within an interdisciplinary design approach of a robust high heel
Within this paper the combination of several methods, developed and used in Collaborative Research Center (CRC) 805 - "Control of Uncertainties in Load Carrying Systems in Mechanical Engineering" of the DFG (German Research Foundation), is used to demonstrate the development of a load carrying system under uncertainty. The development starts with the identif
J. Braz. Soc. Mech. Sci. & Eng.. Publicado em: 2012
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5. Methodology of production strategy optimization based on genetic algorithms / Metodologia de otimização probabilistica de estrategias de produção baseada em algoritmos geneticos
High levels of uncertainty and associated risks in the exploration and production of some oil fields suggest the use of probabilistic optimized production strategies. Therefore, an appropriate production strategy should be chosen considering various geological and economic scenarios. In this work, a new approach for the optimization is proposed where the pro
Publicado em: 2008
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6. Uso de poços inteligentes em desenvolvimento de campos de petroleo sob incertezas / Use of smart wells in petroleum field developments under uncertainties
The selection of a production strategy is one of the most important tasks to ensure success of petroleum fields development. In order to improve the performance of fields, the use of smart wells is becoming a common practice. In such wells, devices like valves and sensors are able to monitor and control the production in real time, adding flexibility to the
Publicado em: 2008
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7. MODELO DE PROGRAMAÇÃO ESTOCÁSTICA PARA O PLANEJAMENTO ESTRATÉGICO DA CADEIA INTEGRADA DE PETRÓLEO / A STOCHASTIC PROGRAMMING MODEL FOR THE STRATEGIC PLANNING OF THE OIL SUPPLY CHAIN
The oil industry is one of the most important and dynamic in Brazil. As the oil industry naturally integrated, we need an appropriate strategic planning to the oil supply chain that consider all its processes, such as oil production, refining, distribution and refined products marketing. Moreover, the oil industry is susceptible to various uncertainties rega
Publicado em: 2008
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8. Prebuckling enhancement of beams and plates under uncertain loadings and arbitrary initial imperfections
Crooked beams and plates with arbitrary initial geometric imperfections are optimized in order to improve their prebuckling response in the presence of uncertain loadings. A novel optimization approach is presented to simultaneously handle the two types of uncertainties: arbitrary initial imperfection patterns and arbitrary loadings. A remarkable improvement
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2007-12
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9. SISTEMA HÍBRIDO DE OTIMIZAÇÃO DE ESTRATÉGIAS DE CONTROLE DE VÁLVULAS DE POÇOS INTELIGENTES SOB INCERTEZAS / HYBRID OPTIMIZATION SYSTEM FOR THE CONTROL STRATEGIES OF INTELLIGENT WELLS UNDER UNCERTAINTIES
A atividade de gerenciamento de reservatórios é uma tarefa essencial que visa o desafio da otimização da explotação de reservatórios de petróleo. Como resposta a tal desafio a indústria de óleo e gás vem desenvolvendo novas tecnologias, como a de poços inteligentes. Esses poços tem objetivo de baratear as operações de restaurações mais corri
Publicado em: 2007