Analytical Threshold for Chaos of Piecewise Duffing Oscillator with Time-Delayed Displacement Feedback

Figure 13

Phase portrait, time history, and Poincaré cross section diagram of the system at F = 37.70 and τ = 0.8. (a) Phase portrait. (b) Poincaré cross section diagram (c = 0.5, γ₁ = 30, γ₂ = 20, μ = 0.001, k₁ = 10, and ω = 3.9).

(a)

(b)