Composite One- to Six-Scroll Hidden Attractors in a Memristor-Based Chaotic System and Their Circuit Implementation

Figure 3

Some typical phase portraits with different parameter a. (a, b) A pair of asymmetric single-scroll chaotic attractors. (b) A pair of asymmetric single-scroll chaotic attractors. (c, d) A pair of symmetric double-scroll chaotic attractors. (e, f) Two different double-scroll chaotic attractors. (g, h) Two different composite 3-scroll chaotic attractors. (i, j) A pair of symmetric composite 4-scroll chaotic and hyperchaotic attractors. (k) A composite 5-scroll chaotic attractor. (l) A composite 6-scroll hyperchaotic attractor.

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