Parameter Estimation and Hybrid Lag Synchronization in Hyperchaotic Lü Systems

Figure 3

The evolutions of the state variables 𝑥_𝑚(𝑡−𝜏),   𝑦_𝑚(𝑡−𝜏),   𝑧_𝑚(𝑡−𝜏),   𝑤_𝑚(𝑡−𝜏) and 𝑥_𝑠,𝑦_𝑠,𝑧_𝑠,𝑤_𝑠.