SciELO - Scientific Electronic Library Online

 
vol.9 número1An alternative derivation of the Dirac operator generating intrinsic Lagrangian local gauge invarianceObservation of the two-way shape memory effect in an atomistic mode of martensitic transformation índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados

Revista

Articulo

Indicadores

  • No hay articulos citadosCitado por SciELO

Links relacionados

  • No hay articulos similaresSimilares en SciELO

Compartir


Papers in physics

versión On-line ISSN 1852-4249

Resumen

ZANETTE, D. H.. Self-sustained oscillations with delayed velocity feedback. Pap. Phys. [online]. 2017, vol.9, n.1. ISSN 1852-4249.  http://dx.doi.org/10.4279/PIP.090003.

We study a model for a nonlinear mechanical oscillator, relevant to the dynamics of micro-and nanomechanical time-keeping devices, where periodic motion is sustained by a feedback force proportional to the oscillation velocity. Specifically, we focus our attention on the effect of a time delay in the feedback loop, assumed to originate in the electric circuit that creates and injects the self-sustaining force. Stationary oscillating solutions to the equation of motion, whose stability is insured by the crucial role of nonlinearity, are analytically obtained through suitable approximations. We show that a delay within the order of the oscillation period can suppress self-sustained oscillations. Numerical solutions are used to validate the analytical approximations.

Palabras clave : Nonlinear oscillator; Self-sustained oscillation; Oscillation suppression; Micromechanical devices.

        · texto en Inglés     · Inglés ( pdf )

 

Creative Commons License Todo el contenido de esta revista, excepto dónde está identificado, está bajo una Licencia Creative Commons