TY - GEN
T1 - Simulation study for marine riser VIV displacement detection method based on IFFT
AU - Li, Baojun
AU - Wang, Haiyan
AU - Shen, Xiaohong
PY - 2010
Y1 - 2010
N2 - 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.
AB - 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.
KW - Fourier transform pairs
KW - Frequency search
KW - Vibration displacement
KW - Vortex induced vibration
UR - http://www.scopus.com/inward/record.url?scp=78650545438&partnerID=8YFLogxK
U2 - 10.1109/ICAIE.2010.5641040
DO - 10.1109/ICAIE.2010.5641040
M3 - 会议稿件
AN - SCOPUS:78650545438
SN - 9781424469338
T3 - Proceedings - 2010 International Conference on Artificial Intelligence and Education, ICAIE 2010
SP - 699
EP - 702
BT - Proceedings - 2010 International Conference on Artificial Intelligence and Education, ICAIE 2010
T2 - 2010 3rd International Conference on Artificial Intelligence and Education, ICAIE 2010
Y2 - 29 October 2010 through 30 October 2010
ER -
