一种新型频率测量方法的研究  

Study of New Methods about Frequency Measurement

作　　者：张淑清[1] 蔡文龙[1] 吕江涛[1] 杨凤禄[1] 王雪强[1] 

机构地区：[1]燕山大学电气工程学院,河北秦皇岛066004

出　　处：《传感技术学报》2005年第3期470-472,共3页Chinese Journal of Sensors and Actuators

基　　金：国家自然科学基金资助项目(60102002);河北省博士基金资助项目(B2004522);霍英东基金资助项目(81057);河北省自然科学基金(601224)

摘　　要：研究了一种带摄动的Duffing振子混沌数学模型,详细的分析了其间歇混沌特性。根据Duffing振子对噪声的免疫力,提出了一种新型的频率测量方法,并给出了具体的算法。仿真结果表明,在强噪声背景下,该方法可以准确的测出微弱正弦信号的频率。A typical intermittent chaotic model-the Dulling oscillator is researched and its character of intermittent chaos is also studied. A new method about frequency measurement is presented. Based on the immunity of Dulling oscillator to noise, an algorithm is given. The result of simulation experiment indicates that the method can be used to measuring frequency of weak sine signal under strong noise background accurately.

关 键 词：DUFFING振子 间歇混沌 微弱信号 测频 

分 类 号：TM935[电气工程—电力电子与电力传动]