Resumo

CHIU, R.; MORA-GONZALEZ, M.  e  LOPEZ-MANCILLA, D.. Chaotic Oscillators implemented into a PIC18F Microcontroller. Nova scientia [online]. 2014, vol.6, n.12, pp.60-77. ISSN 2007-0705.

Introduction: Chaotic systems are of great interest in various branches of science and engineering. Many works have been proposed in order to solve some different interesting problems, such that determining structural damages in materials or for secure communications systems. However, several approaches are in continuous-time, whereas in many cases, the systems are desired to be in discrete-time mode and in real time. Method: In this work, an experimental implementation of three chaotic oscillators into a simple microcontroller is proposed. The chaotic oscillators to implement are Lorenz, Rössler and Chen. The implementation consists only of a low cost microcontroller, a few resistors and a simple algorithm. Results: An inexpensive and simple embedded system to generate chaotic oscillators was obtained. Discussion or Conclusion: The implementation of chaotic oscillators of Lorenz, Rössler and Chen into 18 bits microcontroller is demostrated. It is further noted that the proposed algorithm could migrate from one oscillator to another with only replace chaotic system equations.

Palavras-chave : Discrete-time chaotic systems; Microcontrollers; Lorenz system; Chen's equations; Rössler system.

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