Chaos Synchronization Based on Unknown Input Proportional Multiple-Integral Fuzzy Observer

Figure 7

(a) Chaotic behavior 𝑥₄(𝑥₁(𝑡),𝑥₂(𝑡)) of fourth Rossler fuzzy system. (b) Chaotic behavior 𝑥₄(𝑥₁(𝑡),𝑥₃(𝑡)) of fourth Rossler fuzzy system. (c) Chaotic behavior 𝑥₄(𝑥₂(𝑡),𝑥₃(𝑡)) of fourth Rossler fuzzy system. (d) Chaotic behavior 𝑥₃(𝑥₁(𝑡),𝑥₂(𝑡)) of fourth Rossler fuzzy system.

(a)

(b)

(c)

(d)