| 摘要 |
A magnetic bearing system uses conductive loops which interact with magnets to levitate a rotor and to center it on a rotational axis. The rotor is provided with a plurality of closed loops of electrically conductive material with a finite inductance. Rotation causes the loops to travel along a prescribed circular path which carries them through a series of magnetic fields. In preferred embodiments, each loop is subjected to two magnetic fields simultaneously, and the magnets are positioned where a loop moving on its prescribed path will be equally subjected to the fields of the magnets. This produces equal and opposite electromotive forces in the loop so that no current will flow. However, when a loop deviates laterally from its prescribed path, the interior of the loop will be unequally subjected to the magnetic fields. This produces unequal and opposed electromotive forces in the loop, thus producing a current which in the presence of the magnetic fields exerts a force tending to move the loop laterally toward the prescribed path.
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