Min Max Problem
Mostrando 1-6 de 6 artigos, teses e dissertações.
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1. Approximate solutions of large amplitude vibration of a string
Abstract In the present study, the response of a flexible string with large amplitude transverse vibration is studied utilizing amplitude-frequency formulation, improved amplitude-frequency formulation and max-min approach. In order to verify the accuracy of these approaches, obtained results are compared with other methods such as variational approach meth
Lat. Am. j. solids struct.. Publicado em: 04/06/2018
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2. Analytical study on the vibration frequencies of tapered beams
A vast amount of published work can be found in the field of beam vibrations dealing with analytical and numerical techniques. This paper deals with analysis of the nonlinear free vibrations of beams. The problem considered represents the governing equation of the nonlinear, large amplitude free vibrations of tapered beams. A new implementation of the ancien
Latin American Journal of Solids and Structures. Publicado em: 2011-06
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3. Recursive robust regulator for discrete-time state-space systems / Regulador robusto recursivo para sistemas lineares de tempo discreto no espaço de estado
This dissertation deals with robust recursive regulators for discrete-time systems subject to parametric uncertainties. A new quadratic functional based on the combination of penalty functions and game theory is proposed to solve this class of problems. An important issue of this approach is that the recursiveness can be performed without the need of adjusti
Publicado em: 2009
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4. A contribution for studing of robust control / Uma contribuição ao estudo de controladores robustos
The model based predictive controller (MPC) has been successfully applied in industry, with particular emphasis on the petrochemical industry. The basic feature of MPC algorithms is based on the formulation of an optimization problem, for calculating the sequence of control moves that minimize a performance function in a time horizon with the best informatio
Publicado em: 2009
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5. A contribution to the study about multicriterion optimization methods / Uma contribuição ao estudo dos métodos de otimização multi-objetivo
In optimization problems, there are many situations in which the users goal is to minimize and or maximize several functions simultaneously, instead of dealing with a single objective function. These functions form a mathematical description of performance criteria, which are usually in conflict with each other. This situation is formulated as a multicriteri
Publicado em: 2005
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6. Minimização da energia de deformação de vigas de espessura variável sujeitas a carregamentos incertos / Compliance optimization of variable thickness beams subjected to uncertain loading conditions
Optimization plays a very important role in space applications since mass and structural flexibility are critical requirements for space missions. Generally, it is desired that the structure be as lightweight and stiff as possible. As a contribution in this area this work investigates compliance optimization of a structure under multiple load cases. The prob
Publicado em: 2005