Crisis induced intermittency in a fourth-order autonomous electric circuit

The chaotic dynamics of a fourth-order autonomous nonlinear electric circuit has been studied. The circuit consists of two active elements, one linear negative conductance and one nonlinear resistor exhibiting a symmetrical piecewiselinear v-i characteristic and two capacitances C-1 and C-2, which serve as the control parameters of the system. Experimental time series and the corresponding phase portraits were used to register the intermittent behaviour of the corresponding dynamical system between two interacting subattractors. The distribution of the times tau, between successive transitions from the one subattractor to the other indicates that a crisis induced intermittency occurs in the studied circuit. (c) 2006 Elsevier Ltd. All rights reserved.