250763.fig.003a
(a)
250763.fig.003b
(b)
250763.fig.003c
(c)
250763.fig.003d
(d)
Figure 3: (a) 𝛼 = 0 . 9 1 , Signals 𝑥 1 , 𝑥 2 , (b) 𝛼 = 0 . 9 1 , Signals 𝑦 1 , 𝑦 2 , (c) 𝛼 = 0 . 9 1 , Signals 𝑧 1 , 𝑧 2 , and (d) 𝛼 = 0 . 9 1 , Error system.