We present an experimental study of two coupled Duffing oscillators in which intermittent chaotic synchronization emerges when sweeping the excitation parameters of the second oscillator, while keeping (F₁, Ω₁) fixed and varying (F₂, Ω₂). We employ three complementary tools: (i) a direct comparison of x₁(t), x₂(t), and the synchronization error e(t), aligned using an optimal time delay τ*, to...
Finite, noisy records of a system response can conceal changes in response organization when only one
observable is measured and no complete model is available. We analyze experimental capacitor voltage
signals from a Duffing type circuit using fuzzy and thresholded recurrence methods in multiple windows across
the sweep of the excitation amplitude. Quantifiers of fuzzy proximity, recurrence...
