Research Article Open Access

Synchronization of Two Chau’s Oscillator’s Using Current Conveyor (Ccii+) in Matlab Simulink

Abstract

Introduction: A synchronization of two Chua’s oscillator’s, which exhibits chaotic behaviour is presented in various circuits. This new realization consists of the Current Conveyor (CCII+) based circuit, and is in parallel with the nonlinear resistor. A synchronization of two Chua’s oscillator using Current Conveyor (CCII+) is presented. Method: Master/Slave coupling between two Chua’s oscillators for state v1, v2, v3, and v4 is easily achievable with just two resistors and one-second current conveyors. As stated earlier, there is an alternative construction for the main block of Chau’s circuit model in Simulink. It is constructed by using gain block, absolute blocks, adding, and constant blocks. System state variables v1, v2 andiLare represented at the output of integrator blocks. A Simulink model for Chau’s circuit with the piecewiselinear nonlinear function. The circuit is realized by differential (voltage to current) pairs feeding two capacitors, which carry the dynamics, with the key component being a (voltage to current) binary hysteresis circuit due to Linares. Chau’s oscillator realized with the commercially available positivetype second-generation Current Conveyor (CCII+) is included in the TL802 or AD844 device. Result: Simulated results for two synthetic values of inductance L1=18mH and L2=10 mH are presented. It can be monitored as timedomain response and v1- v2 phase portrait illustrations in SIMULINK. Chua’s circuit may work in equilibrium region, period-n limit region, chaotic region or saturation region. In the synchronization of Chua’s circuit, the synchronization behavior is more sensitive to R0 mismatch than L and C mismatch, as it decides the chaotic behaviour of the circuit. In sound synthesis application, interesting sounds are synthesized with Chua’s circuit. Application: The proposed circuits find applications in many areas such as secure communication, medical field, fractal theory, and Sound synthesis. Dike UO*, Amana LA, Ogharandukun MO, Imalero T and Uko O

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