Adaptive Modified Function Projective Synchronization between Two Different Hyperchaotic Dynamical Systems

Figure 6

The estimates 𝑎₁(𝑡), 𝑏₁(𝑡), 𝑐₁(𝑡), 𝑑₁(𝑡), 𝑙₁(𝑡) of the unknown parameters converge to 𝑎=35,𝑏=3,𝑐=12,𝑑=7, and 𝑙=0.5 as 𝑡 tends to 3.