The Study of an Improved Algorithm About Hilbert Energy Spectrum

2005, Volume 7, Issue 7

Abstract

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Strategic Study of CAE >> 2005, Volume 7, Issue 7

The Study of an Improved Algorithm About Hilbert Energy Spectrum

Research Center of Condition Monitoring and Fault Diagnosis, Southeast University, Nanjing 210096, China

Funding project：国家自然科学基金资助项目（50475078），江苏省研究生创新基金资助项目（xm04-23） Received: 2004-10-17 Revised: 2004-11-28 Available online: 2005-07-20

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Abstract

The Hilbert energy spectrum's principle in HHT is analyzed in the paper; Aimed to solve the end problem in the instantaneous spectrum figure, the cause is researched and ARMA model is introduced in the calculation of Hilbert of HHT. By the simulation of several typical IMFs about vibration signal of rotating machine, and comparing with the conventional methods, the advanced method is proved to be able to improve the end problem effectively and optimize the Hilbert energy spectrum greatly.

Keywords

Hilbert transform ; the distortion of end ; instantaneous parameter ; intrinsic mode function

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References

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