Balanced magnetic array

摘要

A balanced magnetic string and methods for forming same are described. The balanced magnetic string includes at least a plurality of magnetic elements linearly arranged in an alternating magnetic polarity pattern and each comprising a first magnetic volume and a compensating magnetic element having a second magnetic volume that is different than the first magnetic volume. The plurality of magnetic elements and the compensating magnetic element magnetically interact to provide a resultant magnetic field having a desired magnetic field strength at a point of interest.

主权项

1. A balanced magnetic array having m magnetic elements, comprising:
a linear array of magnetic elements corresponding to a magnetic string comprising: m−1 magnetic elements, arranged in an alternating magnetic pattern wherein each of the m−1 magnetic elements comprises a magnetic volume Vm and each located a distance xi from a point of interest; and an mth magnetic element comprising a magnetic property such that a magnetic interaction between the mth magnetic element and the m−1 other magnetic elements in the magnetic string provides a resultant magnetic field having a desired magnetic field strength H at the point of interest, wherein the mth magnetic element corresponds to a compensating magnetic element cm located at a position in the magnetic string corresponding to a shortest distance xcm to the point of interest and having a volume Vcm such that the desired magnetic field strength H=Vcm/xcm3+Σ1m−±Vi/Xi3.