Extension of Traditional Frequency and Research on Time-Frequency Distribution

被引：0

作者：

Liu, Shulin ^{[1
]}

Wang, Xianming ^{[2
]}

Wang, Hui ^{[3
]}

Zhao, Haifeng ^{[2
]}

机构：

[1] Shanghai Univ, Inst Mechatron Engn & Automat, Shanghai 200072, Peoples R China

[2] Northeast Petroleum Univ, Inst Engn Mech, Daqing 163318, Peoples R China

[3] Daqing Oilfield Corp. Ltd, Storage Transportat & Sales Sub-co, Daqing 163453, Peoples R China

来源：

FRONTIERS OF MANUFACTURING AND DESIGN SCIENCE, PTS 1-4 | 2011年 / 44-47卷

关键词：

Local frequency; Time-frequency distribution; Hilbert-Huang transform; Wavelet transform;

D O I：

10.4028/www.scientific.net/AMM.44-47.2089

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The concept of traditional frequency is extended and the concept of local frequency is proposed, which makes the physical meaning of frequency clearer. The wide adaptability of local frequency is also discussed. Moreover, a novel time-frequency analysis method is presented based on local frequency. The time-frequency distribution of continuous triangular wave signal is analyzed by the novel approach. Compared with wavelet transform and Hilbert-Huang transform (HHT), the results show that the concept of local frequency is correct and the novel time-frequency approach is effective.

引用

页码：2089 / +

页数：2

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