State Estimator Design of Generalized Liu Systems with Application to Secure Communication and Its Circuit Realization

Figure 2

The diagram of implementation of the chaotic Liu system ((3a), (3b), (3c), and (3d)), where 𝐶1=𝐶2=𝐶3=1 μF, 𝑅𝑖=10 kΩ,for all𝑖∈{2,4,6,7,8,9,10,11,12,13,14,18,19,20,21,22,23}, 𝑅𝑖=100 kΩ,for all𝑖∈{1,3,5,15,16,17,24},  𝑅25=20 kΩ, 𝑅26=𝑅27=400 kΩ,  𝑅28=𝑅29=25 kΩ.