| 利用单向驱动非线性耦合Duffing振子检测微弱信号 |
| |
| 引用本文： | 吴勇峰.利用单向驱动非线性耦合Duffing振子检测微弱信号[J].科学技术与工程,2011,11(19). |
| |
| 作者姓名： | 吴勇峰 |
| |
| 作者单位： | 哈尔滨工业大学电气工程及自动化学院,哈尔滨,150001 |
| |
| 基金项目： | 国家高技术研究发展计划（863计划） |
| |
| 摘 要： | 针对单个Duffing振子检测微弱信号时相变判别计算量大、时间长、不易把握等问题，建立了一个单向驱动非线性耦合Duffing振子系统，根据横向Lyapunov指数分析了系统在混沌态到大尺度周期态时振子间运动轨迹的同步演化特性，提出了利用同步误差来判别相变的新方法。实验仿真表明，在强噪声背景下该耦合系统仍能够正确快速地检测出微弱信号。
|
| 关 键 词： | 单向驱动 非线性耦合 Duffing振子 |
| 收稿时间： | 4/2/2011 8:41:43 PM |
| 修稿时间： | 4/2/2011 8:41:43 PM |
Weak signal detection based on unidirectional driving nonlinear coupled Duffing oscillator |
| |
| wu yong feng.Weak signal detection based on unidirectional driving nonlinear coupled Duffing oscillator[J].Science Technology and Engineering,2011,11(19). |
| |
| Authors: | wu yong feng |
| |
| Institution: | WU Yong-feng,ZHANG Shi-ping(School of Electrical Engineering & Automation,Harbin Institute of Technology,Harbin 150001,P.R.China) |
| |
| Abstract: | Considering the huge computation and long time calculation in phase transition identification of weak signal detection based on single Duffing oscillator, this paper establishes a unidirectional driving nonlinear coupled Duffing oscillator system. System synchronization state from chaotic state to large-scale periodic state is analyzed according to transverse Lyapunov exponent, and a novel method for phase transition identification based on synchronization error is proposed. Experiment simulation shows that this coupled Duffing oscillator system can quickly detect weak signal in strong noise. |
| |
| Keywords: | unidirectional driving nonlinear coupled Duffing oscillator |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《科学技术与工程》浏览原始摘要信息 |
| 点击此处可从《科学技术与工程》下载免费的PDF全文 |
