Tc. Newell et al., SYNCHRONIZATION OF CHAOS USING PROPORTIONAL FEEDBACK, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics, 49(1), 1994, pp. 313-318
We have demonstrated experimentally a proportional-feedback algorithm
for the synchronization of chaotic time signals generated from a pair
of independent diode resonator circuits. Synchronization was easily ob
tained and occurred for relative feedback levels between 3% and 8% of
the driving voltage. Once established, the synchronization persisted t
hroughout the whole range of the resonator bifurcation diagram without
varying the gain of the feedback.