Four-Scroll Hyperchaotic Attractor in a Five-Dimensional Memristive Wien Bridge Oscillator: Analysis and Digital Electronic Implementation

Figure 5

Phased portrait revealing the transition to chaos in column (i) with their corresponding power density spectra in column (ii): (a) the pair of chaotic attractors with ; (b) symmetric attractor period-8 with ; (c) symmetric attractor period-2 with ; (d) symmetric attractor period-15 with ; (e) two-wing symmetric chaotic attractor with ; (f) four-wing symmetric chaotic attractor with ; (g) two-wing symmetric period-20 attractor with ; (h) two-wing symmetric full chaotic attractor with ; (i) four-wing period-9 attractor with ; (j) four-wing period-2 attractor with ; (k) four-wing merge chaotic attractor with . Initial conditions: (1, 1, 1, 0.1, ±1).

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(b)

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(e)

(f)

(g)

(h)

(i)

(j)

(k)