Fig. 4
From: Synchronization bandwidth enhancement induced by a parametrically excited oscillator
Bandwidth amplification during high-order unidirectional synchronization. The DC voltage Vdc was maintained at 35 V, and the driving voltage Vac was 550 mV for the parametrically excited oscillator and 335 mV for the directly excited oscillator to actuate the same maximum amplitude. The SBW with respect to the perturbation strength of parametric excitation (a) and direct excitation (b) for perturbation strengths from 3 mV to 60 mV. c Arnold tongues measured from Ω/Ωs = 1:2 to 1:8. The colored regions are the predicted SWB. d The variation in the frequency Ω with increasing disturbance frequency
