Instantaneous frequency measurement based on EMD and TVAR

摘要：

Instantaneous frequency (IF) is an important parameter in the study of non- stationary single, when instantaneous frequency is measured accurately, it has great application in electric power system single analyze, intelligent trouble diagnosis and so on. A new method for instantaneous frequency measurement which based on Empirical Mode Decomposition (EMD) and Time-Varying Auto- regressive Model (TVAR) is discussed in this article. It includes two parts. First, a signal is decomposed into a finite and often small number of basic components—Intrinsic Mode Function (IMF).Then, TVAR is calculated in any of the IMF signal. This new method can suppress the parts of the end effect which is caused by Hilbert transform. An example from simulation experiment is given to demonstrate its power. This new method can analyze complicated nonlinear and non-stationary signal.

关键词： instantaneous frequency measurement EMD TVAR non- stationary single.

作者: Zhou Yun Li Shiping Luo Peng Zhou Qiuping

作者单位: The Second Artillery Engineering College,Xian 710025,China Urban Vocational College of Chongqing,Chongqing 402160,China

会议类型: 国际会议

会议名称: 2011 10th International Conference on Electronic Measurement & Instruments(第十届电子测量与仪器国际会议 ICEMI2011)

会议地点: 成都

会议语种:英文

页码: 1023-1026

在线出版日期: 2011-08-16（万方平台首次上网日期，不代表论文的发表时间）