Delayed dynamics in an electronic relaxation oscillator
Autori: Di Garbo A., Euzzor S., Ginoux J.-M., Arecchi FT., Meucci R.
Affiliazione autori: CNR, Inst Biophys, Pisa, Italy; CNR, Natl Inst Opt, Florence, Italy; CNRS, Lab Informat & Syst, UMR 7020, Marseille, France; Univ Firenze, Dept Phys & Astron, Florence, Italy
Abstract: We present an experimental investigation of the complex dynamics of a modulated relaxation oscillator implemented by using a unipolar junction transistor (UJT) showing the transition to chaos through torus breakdown. In a previous paper a continuous model was introduced for the same system, explaining chaos based on analogy with a memristor. We propose here a new approach based on a piecewise linear model with delay considering a measured parasitic delay effect. The inclusion of this delay, accounting for memory effects, increases the dimensionality of the model, allowing the transition to chaos as observed in the experiment. The piecewise delayed model shows analogies with a two-dimensional leaky integrate-and-fire model used in neurodynamics.
Giornale/Rivista: PHYSICAL REVIEW E
Volume: 100 (3) Da Pagina: 032224-1 A: 032224-9
Parole chiavi: CHAOSDOI: 10.1103/PhysRevE.100.032224Citazioni: 3dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2021-12-05Riferimenti tratti da Isi Web of Knowledge: (solo abbonati) Link per visualizzare la scheda su IsiWeb: Clicca quiLink per visualizzare la citazioni su IsiWeb: Clicca qui