Object magnetic field compensation system

摘要

The magnetic field compensation system uses a coil system in 3 coordinate axes enclosing the object or attached to it, supplied with compensation currents via a processor-controlled current supply. A three-axis coil system is used. The coils are either wound around the object or lie against the wall of the object. The coils are supplied by a computer-controlled current supply. The earth's magnetic field for each geographical position is calculated and used to control the compensation currents together with the detected movement of the object, to compensate for the permanent and induced magnetic field components in both vertical and horizontal directions.