title: Time-delayed feedback control of coherence resonance near subcritical Hopf bifurcation: theory versus experiment.
abstract: Using the model of a generalized Van der Pol oscillator in the regime of subcritical Hopf bifurcation, we investigate the influence of time delay on noise-induced oscillations. It is shown that for appropriate choices of time delay, either suppression or enhancement of coherence resonance can be achieved. Analytical calculations are combined with numerical simulations and experiments on an electronic circuit.
authors.affiliation: Department of Physics, Saratov State University, Astrakhanskaya str. 83, 410012 Saratov, Russia.
authors.forename: Vladimir
authors.initials: V
authors.lastname: Semenov
authors.affiliation: Department of Physics, Saratov State University, Astrakhanskaya str. 83, 410012 Saratov, Russia.
authors.forename: Alexey
authors.initials: A
authors.lastname: Feoktistov
authors.affiliation: Department of Physics, Saratov State University, Astrakhanskaya str. 83, 410012 Saratov, Russia.
authors.forename: Tatyana
authors.initials: T
authors.lastname: Vadivasova
authors.affiliation: Institut für Theoretische Physik, Technische Universität Berlin, Hardenbergstr. 36, 10623 Berlin, Germany.
authors.forename: Eckehard
authors.initials: E
authors.lastname: Schöll
authors.affiliation: Institut für Theoretische Physik, Technische Universität Berlin, Hardenbergstr. 36, 10623 Berlin, Germany.
authors.forename: Anna
authors.initials: A
authors.lastname: Zakharova