Network Dynamics of a Fractional-Order Phase-Locked Loop with Infinite Coexisting Attractors

Figure 2

Stability regions of the equilibrium point [0, 0, 0] of the FOPLL system for (a) various fractional orders and parameter K with parameter G = 1; (b) various fractional orders and parameter G with K = 2.5; (c) various values of parameters K and G with fractional orders q = 0.98 and q = 0.9 as shown in (c) and (d).

(a)

(b)

(c)

(d)