Tracking Control Method for Double Compound-Combination Synchronization of Fractional Chaotic Systems and Its Application in Secure Communication

Figure 4

Synchronization of state variables for the four driving systems (2)–(22) (solid curves) and the four response systems (23)–(26) (dashed curves): (a) and versus (t) (b) and versus (t) (c) and versus t.

(a)

(b)

(c)