Open AccessDetecting faint variation in signal by synchronization of Duffing system
Author(s) -
Weiyang Qin,
Hao Sheng,
Yongfeng Yang
Publication year - 2008
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.57.2704
Subject(s) - synchronization (alternating current) , signal (programming language) , computer science , nonlinear system , duffing equation , control theory (sociology) , chaos (operating system) , variation (astronomy) , synchronization of chaos , physics , telecommunications , artificial intelligence , astrophysics , channel (broadcasting) , control (management) , quantum mechanics , programming language , computer security
For nonlinear Duffing system, a derived synchronization system is built and the method is proved. By the synchronization, the faint difference in stimulating signal of Duffing system can be detected. In simulation, when there occurs chaos in the original system, the responses of the original and derived system will exhibit synchronization for identical input signal and non-synchronization for different input signal. When the system is in quasi-periodic motion, the synchronization is still sensitive to the faint variation in the input signal. The simulation results prove the effectiveness of the method.