Research Article
Parameter-Independent Dynamical Behaviors in Memristor-Based Wien-Bridge Oscillator
Figure 7
Phase portraits of various coexisting attractors in the plane for different memristor initial conditions, where = 0, = 0, and = 10−9. (a) = −2.4 (red) and 2.4 (blue), left-right period 1 limit cycles; = −1.4 (green) and 1.4 (magenta), left-right period 2 limit cycles; = −0.5 (yellow) and 0.5 (cyan), left-right chaotic spiral attractors; (b) = 0.001 (red), double-scroll chaotic attractor; (c) = −7 (yellow), chaotic spiral attractor; = 7 (black asterisk), point attractor; = −2.8 (cyan), chaotic spiral attractor; = 2.8 (blue), period 1 limit cycle; (d) = −6.1 (green), period 4 limit cycle; = −4.3 (red), period 5 limit cycle.
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