摘要
利用Duffing振子参数敏感性检测微弱信号是当前研究热点。研究了利用EWB软件实现Duffing振子电路,通过电路仿真试验研究Duffing电路对初始参数的敏感性,及对不同频率信号检测的适应性,最后对比理论分析结果、仿真试验结果和Matlab计算结果,指出Duffing电路与Duffing振子的不同之处,对混沌弱信号检测的实用化研究具有重要意义。
The study of detecting weak periodical signal by using Duffing oscillator initial parameter sensitivity is the hotspot currently. The circuit of Duffing oscillator is designed by using the EWB software. Then the Duffing oscillator＇s sensitivity to initial parameter is studied through the circuit simulation, and the Duffing oscillator＇s adaptability to detection different frequency signal is also studied. Through analyzing the theoretic results, circuit simulation results and Matlab numerical simulation results, the difference between the Duffing oscillator and Duffing circuit is pointed out, which is very important for the practicality research of the chaos weak signal detection theory.
出处
《电路与系统学报》
CSCD
北大核心
2008年第1期132-135,共4页
Journal of Circuits and Systems
