Research and Simulation on Weak Signal Detection Based on Duffing Oscillator and Damping Ratio Perturbation

被引：2

作者：

张敏 ^{[1
]}

刘志珍 ^{[1
]}

曹艳 ^{[2
]}

段嗣昊 ^{[3
]}

张连明 ^{[1
]}

机构：

[1] School of Electrical Engineering,Shandong University

[2] School of Electrical Engineering,Shandong Technician Institute

[3] Department of Dispatching Centre,Shandong Electric Power Corporation

来源：

Journal of Measurement Science and Instrumentation | 2011年 / 2卷 / 02期

关键词：

chaotic system; duffing oscillator; damping ratio; signal detection;

D O I：

暂无

中图分类号：

TN911.23 [信号检测与估计];

学科分类号：

070104 ; 081101 ;

摘要：

The chaotic system is sensitive to the initial value,and this property can be applied in the weak signal detection.There are periodic,critical and chaotic states in a chaotic system.When the system is in the critical state,a small perturbation of system parameter may lead to a qualitative change of the system’s state.This paper introduces a new method to detect weak signals by the way of disturbing the damping ratio.The authors choose the duffing equation,using MATLAB to carry on the simulation,to study the changes of the system when the signal to be measured is added to the damping ratio.By means of observing the phase locus chart and time domain chart,the weak signal will be detected.

引用

页码：161 / 163

页数：3

共 4 条

[1] 杜芬振子的仿真分析 [J].