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Control of complex dynamics with time-delayed feedback in populations of chemical oscillators / Yumei Zhai in Industrial & engineering chemistry research, Vol. 47 N°10 (Mai 2008) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 47 N°10 (Mai 2008) . - p. 3502–3514 Titre : Control of complex dynamics with time-delayed feedback in populations of chemical oscillators : desynchronization and clustering Type de document : texte imprimé Auteurs : Yumei Zhai, Auteur ; István Z. Kiss, Auteur ; John L. Hudson, Auteur Année de publication : 2008 Article en page(s) : p. 3502–3514 Note générale : Bibliogr. p. 3513-3514 Langues : Anglais (eng) Mots-clés : Complex  dynamics;  Chemical  oscillators;  Desynchronization;  Clustering Résumé : Control of collective dynamics with global time-delayed feedback was experimentally studied with (phase) synchronized populations of smooth, relaxational, and chaotic electrochemical oscillators. The experimental results provide laboratory evidence for the findings in the studies of delayed feedback on phase oscillators; multiple, isolated regions of desynchronization in the parameter plane, hysteresis phenomenon around the boundaries of control regions, synchronization of irregular behavior with very strong feedback strength, and a shift of the synchronization transition curves were reproduced in experiments. In addition, it is observed that clustering accompanies the occurrence of desynchronization in delayed feedback of relaxational oscillators. For populations of elements that are close to Hopf bifurcation, desynchronization, amplitude death, and enhanced synchronization occurs with a low, intermediate, and high delay time, respectively. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie0708632 [article] Control of complex dynamics with time-delayed feedback in populations of chemical oscillators : desynchronization and clustering [texte imprimé] / Yumei Zhai, Auteur ; István Z. Kiss, Auteur ; John L. Hudson, Auteur . - 2008 . - p. 3502–3514. Bibliogr. p. 3513-3514 Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 47 N°10 (Mai 2008) . - p. 3502–3514 Mots-clés : Complex  dynamics;  Chemical  oscillators;  Desynchronization;  Clustering Résumé : Control of collective dynamics with global time-delayed feedback was experimentally studied with (phase) synchronized populations of smooth, relaxational, and chaotic electrochemical oscillators. The experimental results provide laboratory evidence for the findings in the studies of delayed feedback on phase oscillators; multiple, isolated regions of desynchronization in the parameter plane, hysteresis phenomenon around the boundaries of control regions, synchronization of irregular behavior with very strong feedback strength, and a shift of the synchronization transition curves were reproduced in experiments. In addition, it is observed that clustering accompanies the occurrence of desynchronization in delayed feedback of relaxational oscillators. For populations of elements that are close to Hopf bifurcation, desynchronization, amplitude death, and enhanced synchronization occurs with a low, intermediate, and high delay time, respectively. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie0708632

Framework for engineering the collective behavior of complex rhythmic systems / Craig G. Rusin in Industrial & engineering chemistry research, Vol. 48 N° 21 (Novembre 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N° 21 (Novembre 2009) . - pp. 9416–9422 Titre : Framework for engineering the collective behavior of complex rhythmic systems Type de document : texte imprimé Auteurs : Craig G. Rusin, Auteur ; István Z. Kiss, Auteur ; Hiroshi Kori, Auteur Année de publication : 2010 Article en page(s) : pp. 9416–9422 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Engineering  framework  Dynamic  structures Résumé : We have developed an engineering framework which utilizes experiment-based phase models to tune complex dynamic structures to desired states; weak, nondestructive signals are employed to alter interactions among nonlinear rhythmic elements. In this manuscript, we present an integrated overview and discussion of our recent studies in this area. Experiments on electrochemical reactions were conducted using multielectrode arrays to demonstrate the use of mild model-engineered feedback to achieve a desirable system response. Application is made to the tuning of phase difference between two oscillators, generation of sequentially visited dynamic cluster patterns, engineering dynamically differentiated cluster states, and to the design of a nonlinear antipacemaker for the destruction of synchronization of a population of interacting oscillators. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801807f [article] Framework for engineering the collective behavior of complex rhythmic systems [texte imprimé] / Craig G. Rusin, Auteur ; István Z. Kiss, Auteur ; Hiroshi Kori, Auteur . - 2010 . - pp. 9416–9422. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 21 (Novembre 2009) . - pp. 9416–9422 Mots-clés : Engineering  framework  Dynamic  structures Résumé : We have developed an engineering framework which utilizes experiment-based phase models to tune complex dynamic structures to desired states; weak, nondestructive signals are employed to alter interactions among nonlinear rhythmic elements. In this manuscript, we present an integrated overview and discussion of our recent studies in this area. Experiments on electrochemical reactions were conducted using multielectrode arrays to demonstrate the use of mild model-engineered feedback to achieve a desirable system response. Application is made to the tuning of phase difference between two oscillators, generation of sequentially visited dynamic cluster patterns, engineering dynamically differentiated cluster states, and to the design of a nonlinear antipacemaker for the destruction of synchronization of a population of interacting oscillators. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801807f