title: Delayed feedback control of periodic orbits without torsion in nonautonomous chaotic systems: theory and experiment.
abstract: We demonstrate theoretically and experimentally that the unstable delayed feedback controller is an efficient tool for stabilizing torsion-free unstable periodic orbits in nonautonomous chaotic systems. To improve the global control performance we introduce a two-step control algorithm. The problem of a linear stability of the system under delayed feedback control is treated analytically. Theoretical results are confirmed by electronic circuit experiments for a forced double-well oscillator.
authors.affiliation: Semiconductor Physics Institute, A. Gostauto 11, LT-01108 Vilnius, Lithuania.
authors.forename: A
authors.initials: A
authors.lastname: Tamasevicius
authors.forename: G
authors.initials: G
authors.lastname: Mykolaitis
authors.forename: V
authors.initials: V
authors.lastname: Pyragas
authors.forename: K
authors.initials: K
authors.lastname: Pyragas