Electronic Simulation and Hardware Implementation of TwoudCoupled Periodically Forced Duffing and Van der Poludoscillators and its Application to Secure Communication

摘要

Confirmation of the existence of complex behavior and synchronization of non-identical chaotic systems asudreported in literature attracts much interest in secure communication, but practical implementation is stilludchallenging. In this work, the dynamics of coupled non-identical circuits comprising periodically forcedudDuffing and Van der Pol oscillators is investigated via electronic simulation using Multism software andudhardware implementation on electronic circuits board. After complete synchronization is achieved between theudDuffing (Transmitter) and Van der Pol (receiver) circuits through the variation of the couplingudresistor of the controller, its application to secure communication is therefore demonstrated experimentally andudvia multism. The results from the electronic simulation and hardware implementation on bread board usingudanalog components are in good agreement with the numerical results in literature.udKeywords: Electronic simulation, Periodically Forced Duffing oscillator, Periodically ForcedudVanudder Pol oscillator, Secure Communication, Synchronization