| 主权项 |
1. A method for the real-time determination of the magnetization of the hull of a ship, the hull of the ship being made from a ferromagnetic material and subjected to an inductive magnetic excitation, and the ship being provided with a plurality of magnetic field sensors positioned at predetermined points relative to the hull, comprising the following steps:
a) acquiring a plurality of measurements of a magnetic field using the plurality of sensors; b) assessing the inductive magnetic excitation; and c) determining a likely distribution of magnetic sources on the surface of the hull by resolving a system of equations derived from a modelization of physical phenomena at play, on the basis of the plurality of measurements taken and the assessed inductive magnetic excitation,
wherein, in said modelization, induced magnetic sources are described by a distribution of dipolar sources, and remanent magnetic sources are described by a distribution of monopolar sources, andwherein said modelization comprises:
executing a first model associating a magnetization distribution in the ferromagnetic material with the measurements of the magnetic field; andexecuting a second model, relative to a behavior of the ferromagnetic material, describing a coupling between a magnetic source at one point of the material with a magnetic source at another point of the material. |
