双振子差分混沌特性判别方法

利用混沌振子检测微弱信号具有灵敏度高、抗噪性好等优点,其检测的关键在于对混沌特性的判别。该文在对Duffing振子混沌特性研究的基础上,提出了一种利用双振子差分来进行混沌特性判别的新方法。该方法具有直观、计算量小、抗噪性好和易于实现等优点。文中阐述了该方法的原理,提出混沌牵引的概念,给出相应的判别程序流程,最后对该方法进行了数字仿真,并应用该方法处理小电流接地故障保护现场数据,仿真试验结果证明了该方法的可行性和有效性。

Two-oscillator-difference-chaotic-identification Method

Using the Duffing oscillator,detection of weak signal has good sensitivity and anti-interference capability.And the key of using the chaotic oscillator in detection is to identify thechaoticcharacteristiccorrectly.A newmethodof identifying the chaotic is brought forward,which is called the two-osciUator-difference-chaotic-identification.The pnncipal and the realization procedures of this method are introduced, and a conception of chaotic draw is proposed.The method can be used to identify the chaotic and the intermittent chaotic.The feasibility and validity of this method is proved by the computer simulation.