Exploració per autor "Olivar, Gerard"
Ara es mostren els items 4-8 de 8
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Feedback control of limit cycles: a switching control strategy based on nonsmooth bifurcation theory
Angulo García, Fabiola; Bernardo, Mario di; Fossas Colet, Enric; Olivar, Gerard (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2005-02)
Article
Accés obertIn this paper, we present a method to control limit cycles in smooth planar systems making use of the theory of nonsmooth bifurcations. By designing an appropriate switching controller, the occurrence of a corner-collision ... -
Nonlinear dynamics and bifurcation analysis in two models of sustainable development
Angulo, Fabiola; Olivar, Gerard; Osorio A., Gustavo; Velásquez, Luz S. (UPC. Cátedra Unesco de Sostenibilidad, 2009-12)
Article
Accés obertWe show in this document two mathematical models of development. Namely, we state two systems of nonlinear differential equations with state variables which regard to ecosystem, social and economic dimensions. We analyze ... -
Study of Chaos in the buck Converter
Fossas Colet, Enric; Olivar, Gerard (Institute of Electrical and Electronics Engineers (IEEE), 1996-01)
Article
Accés obertA dc-dc buck converter controlled by naturallysampled, constant-frequency pulsewidth modulation in continuous conduction mode gives rise to a great variety of behavior, depending on the values of the parameters of the ... -
Técnica ZAD aplicada a un convertidor "buck": análisis de estabilidad y de transición al caos
Angulo García, Fabiola; Fossas Colet, Enric; Olivar, Gerard (Comité Español de Automática, 2005-10)
Article
Accés obertEn este trabajo se presentan algunos resultados obtenidos al analizar el convertidor buck controlado mediante un modulador de anchura de pulsos (PWM) centrado. El ciclo de trabajo se calcula obligando a que una salida, ... -
Transition from periodicity to chaos in a PWM-controlled buck converter with ZAD strategy
Angulo García, Fabiola; Fossas Colet, Enric; Olivar, Gerard (World Scientific Publishing, 2005-10-31)
Article
Accés obertThe transition from periodicity to chaos in a DC-DC Buck power converter is studied in this paper. The converter is controlled through a direct Pulse Width Modulation (PWM) in order to regulate the error dynamics at zero. ...