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Chapter 20





             Enhanced Fractional Order


             Indirect Fuzzy Adaptive
             Synchronization of Uncertain


             Fractional Chaotic Systems
             Based on the Variable Structure


             Control: Robust H                  N    Design
             Approach




                          1
                                          2
             Khatir Khettab , Yassine Bensafia , Bachir Bourouba 3
             and Ahmad Taher Azar 4,5
             1                                         2
              Mohamed Boudiaf University of M’sila, M’sila 28000, Algeria, Mohand Oulhadj University of
                                                             4
                                  3
             Bouira, Bouira 10000, Algeria, University of Se ´tif, Se ´tif 19000, Algeria, Faculty of Computers
                                              5
             and Information, Benha University, Benha, Egypt, School of Engineering and Applied Sciences,
             Nile University, Giza, Egypt
             20.1 INTRODUCTION
             Recently, there are many important developments related to the design of non-
             linear systems for many practical applications. Several approaches have been
             developed such as optimal control, nonlinear feedback control, adaptive con-
             trol, sliding mode control, nonlinear dynamics, chaos control, chaos synchroni-
             zation control, fuzzy logic control, fuzzy adaptive control, fractional order
             control, and robust control and their integrations (Azar & Vaidyanathan,
             2015a,b,c, 2016; Azar & Zhu, 2015; Boulkroune et al, 2016a,b; Azar &
             Serrano, 2015a,b,c,d, 2016a,b, 2017; Azar et al., 2017a,b,c,d; Azar 2010a,b,
             2012; Mekki et al., 2015; Vaidyanathan & Azar, 2015a,b,c,d, 2016a,b,c,d,e,f,
             g; Vaidyanathan et al., 2017a,b,c; Zhu & Azar, 2015; Grassi et al., 2017;
             Ouannas et al., 2016a, 2017f,g,h,j; Singh et al., 2017; Vaidyanathan et al,
             2015a,b,c; Wang et al., 2017).
                In recent years, fractional calculus has been applied in the modeling and
             control of various kinds of physical systems, as is well known and


             Mathematical Techniques of Fractional Order Systems. DOI: https://doi.org/10.1016/B978-0-12-813592-1.00020-9
             © 2018 Elsevier Inc. All rights reserved.                   597
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