Control and Synchronization of Chaotic and Hyperchaotic Lorenz Systems via Extended Backstepping Techniques

Figure 4

Extended recursive backstepping tracking control of chaotic Lorenz system for 𝑓(𝑡)=35cos0.57𝑡 when the controller is activated at 𝑡=50. The parameters of the system are as shown in Figure 1 with 𝜀_𝑖=0.5, where 𝑖=1,2,3.

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