FPAA Implementations of Fractional-Order Chaotic Systems


Altun K.

JOURNAL OF CIRCUITS SYSTEMS AND COMPUTERS, vol.30, no.15, pp.1-23, 2021 (Journal Indexed in SCI)

  • Publication Type: Article / Article
  • Volume: 30 Issue: 15
  • Publication Date: 2021
  • Doi Number: 10.1142/s0218126621502716
  • Title of Journal : JOURNAL OF CIRCUITS SYSTEMS AND COMPUTERS
  • Page Numbers: pp.1-23

Abstract

In this paper, fractional-order chaotic systems in an analog-based platform are realized using field programmable analog arrays (FPAA) hardware. With the help of this work, we aim to increase the complexity of chaotic systems. Approximated transfer functions in frequency domain are obtained by analyzing different values of fractional-order integrator with the Charef approximation method. In this study, fractional-order numerical calculation of Rössler and Sprott type-H chaotic systems is carried out. MATLAB Simulink model for chaotic systems that satisfy the conditions of chaos in the boundaries of fractional order value is schematically presented. Moreover, CAM designs and analysis that facilitate the realization of fractional-order transfer functions in FPAA platforms are introduced. The analog-based FPAA experimental and numerical outcomes for fractional order chaotic systems are demonstrated. The comparison of the results obtained in the numerical analysis and simulation study with the experimental results is given. This study confirms that the unpredictability of the chaos carrier signals realized by digital-based can be increased with analog-based FPAA hardware and fractional-order structures so as to provide safer transfer of information signals.