Research Article

Multiswitching Synchronization of a Driven Hyperchaotic Circuit Using Active Backstepping

Figure 8

Error dynamics for the unified and periodically forced Van der Pol-Duffing oscillator of the system state for with controller defined in (34) when the control was activated at for (a) , (b) , and (c) .
918586.fig.008a
(a)
918586.fig.008b
(b)
918586.fig.008c
(c)