Research Article
Analytical Threshold for Chaos of Piecewise Duffing Oscillator with Time-Delayed Displacement Feedback
Figure 3
Phase portrait and Poincaré cross section diagram of the system at F = 64.70 and τ = 1.2. (a) Phase portrait. (b) Poincaré cross section diagram (c = 0.5, γ1 = 30, γ2 = 20, μ = 0.001, k1 = 10, and ω = 3.9).
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| (b) |