Interference magnetic field compensation method which includes s

Details Interference magnetic field compensation method which includes s Interference magnetic field compensation method which includes s

1988-08-26

1989-04-18

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Magnetic

With compensation for test variable

324244, 361146, G01R 3302, G01N 2772, H01H 4728

Patent

active

048230812

ABSTRACT:
Method for compensating the interference magnetic field of an object by means of an interference field controlled magnetic self-protection system having a coil system connected to receive a magnetic field producing current and oriented to produce a magnetic field tending to compensate the interference magnetic field, which method includes: monitoring a magnetic field difference at a selected location relative to the object; providing a representation of the value of the magnetic moment of the object; and controlling the current supplied to the coil in dependence on the monitored magnetic field difference and the value of the magnetic moment.

REFERENCES:
patent: 2776403 (1957-11-01), Anderson et al.
patent: 4649349 (1987-03-01), Chiron et al.

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