SYSTEM AND METHOD FOR LOCALIZATION OF INCIPIENT CAVITATION INDUCED BY PROPELLER OF SHIP, AND SHIP USING THE SAME

摘要

The present invention relates to a system for estimating an incipient cavitation for estimating a position of an incipient cavitation generated by a propeller of a ship. The system for estimating an incipient cavitation comprises: a plurality of sound sensors measuring actual noises caused in a propeller, and a calculation device treating a signal measured in the sound sensors. The calculation sensor generates a measurement sound field for the actual noises at the positions of the sound sensors, collects a predicted or confirmed target frequency caused from an incipient cavitation of frequencies of the noises measured by the sound sensor, generates a copied sound field at positions of the plurality of sound sensors for a virtual noise on the assumption that a virtual sound source causing the virtual noise having the target frequency is around the propeller, and determines the position of the incipient cavitation by estimating the similarity between the copied sound field and the measurement sound field.