Open AccessResearch on impulsive synchronization approach ofparameter uncertain hyperchaotic systems with time-delay
Author(s) -
Luo Yong-jian,
Yu Qian,
Wensheng Zhang
Publication year - 2011
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.60.110504
Subject(s) - computer science , synchronization (alternating current) , robustness (evolution) , secure communication , control theory (sociology) , cipher , lyapunov stability , communications system , synchronization of chaos , encryption , chaotic , chaotic systems , signal (programming language) , control (management) , channel (broadcasting) , telecommunications , computer network , biochemistry , chemistry , artificial intelligence , gene , programming language
In this paper, based on the Lyapunov stability theory, the impulsive synchronization asymptotic stability condition for different hyperchaotic systems with time delay and parameter uncertainty is first presented by using the linear feedback of state variable error between the slave system and the master system as the impulsive control signal. After the synchronization, a digital communication system with time delay is provided to achieve secure communication. This scheme is of high security and robustness. Moreover, computer simulations show that in the communication system, the synchronization of the systems could be achieved quickly, and by using chaotic cipher sequence to encrypt the digital signal, the useful information signal can be recovered effectively from the receiver.