HAN Jian-qun. A Method of Narrowing Frequency Range of Intermittent Sine Signal Detected by Duffing System[J]. Acta Electronica Sinica, 2013, 41(4): 733-738.
HAN Jian-qun. A Method of Narrowing Frequency Range of Intermittent Sine Signal Detected by Duffing System[J]. Acta Electronica Sinica, 2013, 41(4): 733-738. DOI: 10.3969/j.issn.0372-2112.2013.04.018.
The frequency ranges of intermittent sine signals are relatively wide when Duffing chaotic system detects those given signals by utilizing the state changes.According to this problem
a method is analyzed and proved in this paper
which is based on the relation of system's parameters and measured signals' amplitudes and frequencies by the method of Mlnikov
that Duffing system's damping parameters can be increased to improve the ability of detecting sine signals.In addition
simulation results of Duffing system's detecting intermittent sine signals are shown by adjusting damping parameters under noise and noise free condition separately.Simulation results show that the presented method is effective.