Patent ID: 8134435

Claim:
A method for mitigating an amount of a measured flux field, comprising: measuring a magnetic flux field of one or more units at a specified distance from the one or more units yielding a measured magnetic flux field; and specifying, as a function of the measured magnetic flux field, a magnet array having a counter-flux estimated to maintain the magnetic flux field of the one or more units at the specified distance from the one or more units at or below a defined level; remeasuring the magnetic flux field via a feedback loop yielding a new measured magnetic flux field; and adjusting at least one of a strength of a magnet in the magnet array, a number of magnets in the magnet array, a polarity of the magnet in the magnet array, or a location of the magnet in the magnetic array based on the new measured magnetic flux field to maintain a horizontal magnetic field at or below the defined level at the specified distance from the one or more units.