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N-scroll chaotic attractors from saturated function series employing CCII+s

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Abstract

The generation of n-scroll chaotic attractors by using saturated nonlinear function series (SNFS) realized with positive-type second generation current conveyors (CCII+s), is introduced. The nonlinear dynamical system is expressed by a third-order differential equation and to carry out numerical simulations, SNFS are ideally modeled by using staircase functions. Therefore, numerical simulations are introduced to approximate the swings, widths, breakpoints and equilibrium points of the n-scroll attractors by considering, as input variables: the dynamic range associated to active devices, gain of the nonlinear system and the number of scrolls. Therefore, its dynamical behavior is investigated in the state space. Besides, the CCII± is a versatile analog building block and it has been demonstrated to be very useful in several linear and nonlinear applications, since CCII-based implementations offer better performances that Opamps-based implementations in terms of accuracy and bandwidth. Therefore, the nonlinear system is synthesized with CCII+s to generate 3- and 4-scrolls. HSPICE simulations and experimental results are shown to verify the agreement on the behavior of the proposed circuit and the numerical simulations.

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Authors and Affiliations

  1. Autonomous University of Tlaxcala (UAT), Apizaco, Tlaxcala, 70300, Mexico

    C. Sánchez-López

  2. Microelectronics Institute of Sevilla, (IMSE-CSIC), Sevilla, Spain

    C. Sánchez-López

  3. University of Sevilla, Sevilla, 41092, Spain

    C. Sánchez-López

  4. National Institute of Astrophysics, Optics and Electronics (INAOE), Tonantzintla, Puebla, 72840, Mexico

    R. Trejo-Guerra, J. M. Muñoz-Pacheco & E. Tlelo-Cuautle

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  1. C. Sánchez-López
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  2. R. Trejo-Guerra
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  3. J. M. Muñoz-Pacheco
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  4. E. Tlelo-Cuautle
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Correspondence to C. Sánchez-López.

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Sánchez-López, C., Trejo-Guerra, R., Muñoz-Pacheco, J.M. et al. N-scroll chaotic attractors from saturated function series employing CCII+s. Nonlinear Dyn 61, 331–341 (2010). https://doi.org/10.1007/s11071-009-9652-3

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  • DOI: https://doi.org/10.1007/s11071-009-9652-3

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