Page 502 - Mathematical Techniques of Fractional Order Systems
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     Dynamics, Synchronization and Fractional Order Form Chapter | 16  489
             (A)                            (B)
                1.5                            1.5
                 1                              1
                0.5                            0.5
              x 1 , x 2  0                    y 1 , y 2  0
               −0.5                            −0.5
                −1                              −1
               −1.5                            −1.5
                 900  920  940  960  980  1000  900  920  940  960  980  1000
                             Time                            Time
             (C)
                1.5
                 1
                0.5
              z 1 , z 2  0
               −0.5
                −1
               −1.5
                 900  920  940  960  980  1000
                             Time
             FIGURE 16.14 Time series of the master system with infinite equilibria (blue solid) and the
             slave system with infinite equilibria (red dashed): (A) x 1 and x 2 , (B) y 1 and y 2 and (C) z 1 and z 2 .
             Sun et al., 1984; Bagley and Calico, 1991; Westerlund and Ekstam, 1994;
             Jenson and Jeffreys, 1997; Hifer, 2001; Maundy et al., 2010; Elwakil,
             2010; Meghni et al., 2017a,b; Azar et al., 2018a; Ghoudelbourk et al., 2016;
             Freeborn et al., 2013). Chaotic behavior has been observed in various frac-
             tional order systems (Li and Peng, 2004; Deng and Li, 2005; Lu and Chen,
             2006; Li et al., 2006; Ouannas et al., 2007, 2017d,e,f,g,h,i). Moreover, the
             complexity and the advantages of fractional order systems have been used in
             different engineering applications ranging from image encryption, authenti-
             cated encryption scheme, to affine cipher using date of birth (Muthukumar
             and Balasubramaniam, 2013; Muthukumar et al., 2014a,b; Xu et al., 2014).
             Therefore, in this section we will consider the fractional order form of the
             introduced system with infinite equilibria
                The literature on fractional calculus has highlighted several definitions of
             the fractional order derivative. However it is worth noting that three common
             definitions are Grunwald Letnikov, Riemann Liouville, and Caputo defini-
             tions (Podlubny, 1999; Diethelm, 2010; Monje et al., 1999; Petras, 2011). In





