5 resultados para Mauricio, Conde de Saxe

em Universitat de Girona, Spain


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The H∞ synchronization problem of the master and slave structure of a second-order neutral master-slave systems with time-varying delays is presented in this paper. Delay-dependent sufficient conditions for the design of a delayed output-feedback control are given by Lyapunov-Krasovskii method in terms of a linear matrix inequality (LMI). A controller, which guarantees H∞ synchronization of the master and slave structure using some free weighting matrices, is then developed. A numerical example has been given to show the effectiveness of the method

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In this paper, we address this problem through the design of a semiactive controller based on the mixed H2/H∞ control theory. The vibrations caused by the seismic motions are mitigated by a semiactive damper installed in the bottom of the structure. It is meant by semiactive damper, a device that absorbs but cannot inject energy into the system. Sufficient conditions for the design of a desired control are given in terms of linear matrix inequalities (LMIs). A controller that guarantees asymptotic stability and a mixed H2/H∞ performance is then developed. An algorithm is proposed to handle the semiactive nature of the actuator. The performance of the controller is experimentally evaluated in a real-time hybrid testing facility that consists of a physical specimen (a small-scale magnetorheological damper) and a numerical model (a large-scale three-story building)

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This short paper addresses the problem of designing a QFT (quantitative feedback theory) based controllers for the vibration reduction in a 6-story building structure equipped with shear-mode magnetorheological dampers. A new methodology is proposed for characterizing the nonlinear hysteretic behavior of the MR damper through the uncertainty template in the Nichols chart. The design procedure for QFT control design is briefly presented

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Una preocupació constant per als investigadors dels diferents camps relacionats amb l’educació obligatòria, així com també de les administracions educatives i d’altres organismes que hi incideixen, consisteix a seleccionar continguts i orientar els processos més útils per aconseguir que els nous ciutadans s’integrin en la societat avançada del segle XXI. Es vol que s’integrin amb unes eines culturals mínimes i que adquireixen la capacitat d’autoaprenentatge, considerada com a bàsica per entendre la complexitat i inserir-se en el món actual

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El APLE (en inglés se conoce con la sigla FCL: Free-Choice Learning) es un Marco Conceptual Constructivista que explica la forma como se produce la elaboración del conocimiento por parte de los aprendices, cuando se encuentran en espacios de educación informal. En estos escenarios, el control y la dirección del aprendizaje es netamente responsabilidad del individuo, puesto que es él quien decide dónde, cómo, con quién, cuándo y qué quiere aprender. (Falk & Dierking 2002). Según Falk y Dierking estos aprendizajes son más duraderos y significativos para los individuos que los alcanzados a lo largo de los procesos escolares, puesto que son el resultado de los intereses y expectativas del sujeto y ya no obedecen solo a una planeación curricular cerrada y externa a quien aprende