Simulation study for marine riser VIV displacement detection method based on IFFT

Baojun Li, Haiyan Wang, Xiaohong Shen

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Vortex induced vibration (VIV) is the primary reason that accounts for the fatigue of deepwater riser systems. How to detect the displacement of riser caused by vortex induced vibration is the mainly issue in riser fatigue damage monitoring. The way that reconstructs the displacement by double integrating the acceleration signals will leads to unacceptable integration error. To the question, a new algorithm based on the Fast Fourier Transform pairs is presented. The cut-off ratio is defined. The impact that the factor such as lower cut-off frequency, sample length and signal to noise ratio effect the accuracy of the presented algorithm is studied. The simulation results show that this algorithm is effective.

Original languageEnglish
Title of host publicationProceedings - 2010 International Conference on Artificial Intelligence and Education, ICAIE 2010
Pages699-702
Number of pages4
DOIs
StatePublished - 2010
Event2010 3rd International Conference on Artificial Intelligence and Education, ICAIE 2010 - Hangzhou, China
Duration: 29 Oct 201030 Oct 2010

Publication series

NameProceedings - 2010 International Conference on Artificial Intelligence and Education, ICAIE 2010

Conference

Conference2010 3rd International Conference on Artificial Intelligence and Education, ICAIE 2010
Country/TerritoryChina
CityHangzhou
Period29/10/1030/10/10

Keywords

  • Fourier transform pairs
  • Frequency search
  • Vibration displacement
  • Vortex induced vibration

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