諧波信號(hào)頻率的混沌檢測(cè)方法
The Chaotic Detecting Method for the Frequency of Harmonic Signal
-
摘要: 該文針對(duì)實(shí)際中大量存在的未知諧波信號(hào)頻率,提出用非線性混沌動(dòng)力學(xué)系統(tǒng)檢測(cè)的方法;先從非線性方程理論出發(fā)論證系統(tǒng)存在周期解;然后建立仿真模型,用定向過零技術(shù)計(jì)算諧波頻率;經(jīng)過對(duì)計(jì)算結(jié)果絕對(duì)誤差與相對(duì)誤差的分析,得出該項(xiàng)技術(shù)是可行的。同時(shí)提出在檢測(cè)頻率后,進(jìn)一步檢測(cè)諧波幅值的可能性。
-
關(guān)鍵詞:
- 非線性混沌系統(tǒng); 周期解; 諧波未知頻率; 定向過零技術(shù)
Abstract: As for a large number of unknown frequencies of harmonic signals existing in the practice, the paper presents the detecting method utilizing the nonlinear chaotic dynamic system. Firstly, the method verifies being the periodic solution originated from the nonlinear equation theory, then founds the simulating model to calculate harmonic frequency using directional crossover technique. The technique is feasible through analyzing the absolute error and relative error of calculating results. At the same time, the paper brings forward the possibility to further detecting harmonic amplitude after detecting frequency. -
Birx D I. Chaotic oscillators and CMFFNS for singnal detection in noise environments. IEEE Internation Joint Conference on Neural Networks, Baltimore, MD USA, 1992, 22:881 - 888.[2]Simon H. Using neural networks to dynamically model chaotic events such as sea clutter. IEEE SP Magazine, 1998, 15(2):66 - 81.[3]Schafer C, Rosenblum M G, Kurths J, Abel H-H. Heartbeat synchronized with ventilation[J].Nature.1998, 392:239-[4]Li Yue, Yang Baojun. Chaotic system for the detection of periodic signals under the background of strong noise. Chinese Science Bulletin, 2003, 48(5): 508 - 510.[5]李月,楊寶俊,石要武.色噪聲背景下微弱正弦信號(hào)的混沌檢測(cè).物理學(xué)報(bào),2003,52(3):526-530.[6]Wang Guanyu, Dajun, Lin Jianya, Chen Xing. The application of chaotic oscillators to weak signal detection[J].IEEE Trans. on Industrial Electronics.1999, 46(2):440-[7][意]G.桑森,R.康蒂著,黃啟昌等譯.非線性微分方程.北京:科學(xué)出版社,1983:432-441. -
計(jì)量
- 文章訪問數(shù): 2310
- HTML全文瀏覽量: 114
- PDF下載量: 725
- 被引次數(shù): 0
下載:
