Prediction of resonant oscillation

Niels Kjølstad Poulsen (Inventor), Mogens Blanke (Inventor), Roberto Galeazzi (Inventor)

Research output: Patent

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Abstract

The invention relates to methods for prediction of parametric rolling of vessels. The methods are based on frequency domain and time domain information in order do set up a detector able to trigger an alarm when parametric roll is likely to occur. The methods use measurements of e.g. pitch and roll oscillations and compare the measured oscillations using FFT analysis of signal correlations, variance analysis of signals and other comparisons. As an example, the presence of a growing peak around a frequency that doubles the roll natural frequency indicates the possibility that parametric roll is going to happen. L
Original languageEnglish
Patent numberWO10118752
Filing date21/10/2010
CountryInternational Bureau of the World Intellectual Property Organization (WIPO)
Publication statusPublished - 2010

Bibliographical note

Patent:
No.: EP157857

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