International Journal of Bifurcations and Chaos, 1998, vol. 8, No. 3, pp. 639-644
© World Scientific Publishing Company
Experimental results of impulsive synchronization between two Chua's circuits
Andrey I. Panas*, Tao Yang** and Leon O. Chua**
**)Electronics Research Laboratory and Department of Electrical Engineering and Computer Sciences,
*)Institute of Radioengineering and Electronics of the Russian Academy of Sciences
Mokhovaya st., 11, Moscow, 103907, Russia
Universuty of California at Berkeley, Berkeley, CA 94720, USA
International Journal of Bifurcations and Chaos,
1998, vol. 8, No. 3, pp. 639-644
Received October 30, 1997. Revised December 31, 1997.
Impulsive synchronization of chaotic dynamic systems has some important applications to chaotic secure communication and chaotic spread-spectrum communication systems. In this paper we present some experimental results on impulsive synchronization between two Chua's circuits. In our experiments, only one synchronizing impulse sequence is transmitted. The robustness of impulsive synchronization with respect to variations in the frequency and the width of impulses is studied. Experimental results show that robust impulsive synchronization can be achieved under noise conditions and a 2% parameter mismatch between the driving system and the driven system. We also found that an amplified impulse sequence with a gain greater than unity can make the impulsive synchronization more robust. Moreover, we found that impulsive synchronization can be achieved with very narrow impulses.
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