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NONLINEARITY INDUCED SYNCHRONIZATION ENHANCEMENT IN MECHANICAL OSCILLATORS

United States Patent Application

20170207789
A1
View the Complete Application at the US Patent & Trademark Office
An autonomous oscillator synchronizes to an external harmonic force only when the forcing frequency lies within a certain interval, known as the synchronization range, around the oscillator's natural frequency. Under ordinary conditions, the width of the synchronization range decreases when the oscillation amplitude grows, which constrains synchronized motion of micro- and nano-mechanical resonators to narrow frequency and amplitude bounds. The present invention shows that nonlinearity in the oscillator can be exploited to manifest a regime where the synchronization range increases with an increasing oscillation amplitude. The present invention shows that nonlinearities in specific configurations of oscillator systems, as described herein, are the key determinants of the effect. The present invention presents a new configuration and operation regime that enhances the synchronization of micro- and nano-mechanical oscillators by capitalizing on their intrinsic nonlinear dynamics.
Czaplewski, David A. (Naperville, IL), Lopez, Omar (Chicago, IL), Guest, Jeffrey R. (Northbrook, IL), Antonio, Dario (Rio Negro, AR), Arroyo, Sebastian I. (Buenos Aries, AR), Zanette, Damian H. (Rio Negro, AR)
UCHICAGO ARGONNE, LLC (Chicago IL)
15/ 001,740
January 20, 2016
[0001] The United States Government has rights in this invention pursuant to Contract No. DE-AC02-06CH11357 between the United States Department of Energy and the UChicago Argonne, LLC, representing Argonne National Laboratory.