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Issue:
Wavelet Ridge Determination of Chaotic Motion Characteristics
Author(s):
LI He
,
WEN Ji-dan
,
ZHANG Jie
,
WEN Bang-chun
Pages:
403
-
406
Year:
2011
Issue:
3
Journal:
Journal of Northeastern University(Natural Science)
Keyword:
小波脊
;
小波变换
;
混沌运动
;
CrazyClimber算法
;
Abstract:
介绍了一种分析混沌运动的小波脊方法,并将小波脊方法用于分析存在混沌运动的初轧机非线性振动中.研究表明,小波脊方法只需对系统状态变量的某一分量的时间历程进行分析,就可以区分出系统的周期运动、拟周期运动或混沌运动.该方法与Poincaré截面图和相图等方法进行对比,可以发现小波脊线更适应高维混沌系统的研究,并且由小波脊线代表的瞬时频率的混乱程度可以把混沌运动分为强混沌运动和弱混沌运动,可以更准确地提供混沌运动的局部细节特征.
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