Title :
Analysis of Mode Mixing Phenomenon in the Empirical Mode Decomposition Method
Author :
Yang, Yanli ; Deng, Jiahao ; Wu, Caipeng
Author_Institution :
Nat. Key Lab. of Mechatron. Eng. & Control, Beijing Inst. of Technol., Beijing, China
Abstract :
Empirical mode decomposition (EMD) can adaptively separate the intrinsic oscillatory modes of signals into a finite number of intrinsic mode functions (IMFs). IMFs will lose their physical meaning when mode mixing phenomenon occurs. In this paper, we first analyze the relationship between mode mixing and intermittency in signals. We then introduce a new type of mode mixing which is not caused by intermittency in signals. Finally, we argue that the time-varying extrema sampling rate is the essential reason of mode mixing.
Keywords :
signal sampling; empirical mode decomposition method; intrinsic mode functions; intrinsic oscillatory modes; mode mixing phenomenon analysis; signal intermittency; time-varying extrema sampling rate; Sampling methods; Signal analysis; Hilbert-Huang transform (HHT); empirical mode decomposition (EMD); extrema samplings; mode mixing;
Conference_Titel :
Information Science and Engineering (ISISE), 2009 Second International Symposium on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-6325-1
Electronic_ISBN :
978-1-4244-6326-8
DOI :
10.1109/ISISE.2009.19
