Weak Sinusoidal Signal Detecting Based on Duffing Oscillator
LI Zebin
RU Gaige
LI Fuqiang
TAO Wen
WU Zehao
XU Zhiyuan
Abstract：By numerical calculation to Duffing oscillator ,the system stability at equilibrium point and the effect of the system with the changed parameters are analyzed .The results show that system steady state will finally achieve one of the two focal points ;the system phase diagram has a great influence with change of the driving forces amplitude;and the system will be in a critical state of chaos under the suitable parameter .Detection system simulation model of Duffing oscillator is constructed by Matlab/simulink ,and it can detect weak sinusoidal signal in strong noise by phase transition of the system .The simulation results also show that it has a good noise immunity and a good detection performance .
Keywords：Duffing oscillatorweak sinusoidal signalGaussian white noisephase transition
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 59-63 )