Adaptive synchronization of fractional Lorenz systems using a reduced number of control signals and parameters |
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Affiliation: | 1. Department of Electrical Engineering, University of Chile, Av. Tupper 2007, Santiago de Chile, Chile;2. Advanced Mining Technology Center, Av. Tupper 2007, Santiago de Chile, Chile;1. Department of Earth, Environment and Resources Sciences, University of Naples Federico II, Largo San Marcellino 10, 80138 Naples, (Italy);2. Aarhus Geophysics Aps, C.F. Møllers Alle 4, Aarhus C 8000, Denmark |
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Abstract: | This paper analyzes the synchronization of two fractional Lorenz systems in two cases: the first one considering fractional Lorenz systems with unknown parameters, and the second one considering known upper bounds on some of the fractional Lorenz systems parameters. The proposed control strategies use a reduced number of control signals and control parameters, employing mild assumptions. The stability of the synchronization errors is analytically demonstrated in all cases, and the convergence to zero of the synchronization errors is analytically proved in the case when the upper bounds on some system parameters are assumed to be known. Simulation studies are presented, which allows verifying the effectiveness of the proposed control strategies. |
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