| 摘要 |
A system includes an instrument coupled to a magnetic material. The orientation of the instrument is influenced by a magnetic field generated by an array of magnetic elements. Each element of the array is controlled by a data value in a magnetic control store to produce a field strength and polarity. Overwriting the pattern in the magnetic control store will result in a magnetic field which applies a torque to the instrument and cause an azimuthal or elevational rotary movement about the center of the instrument.
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