Dynamic Analysis, Circuit Design, and Synchronization of a Novel 6D Memristive Four-Wing Hyperchaotic System with Multiple Coexisting Attractors

Figure 4

The phase portraits: (a) quasiperiodic 1, (b) quasiperiodic 2, (c) two-wing chaotic attractor, and (d) four-wing hyperchaotic attractor.

(a)

(b)

(c)

(d)