| 摘要 |
<p>A hybrid magnetic bearing that is highly controllable and can achieve a higher stiffness, higher efficiency, and further reduction in size is provided. In a hybrid magnetic bearing having a rotor that rotates while being suspended without contact by the controlling magnetic force of a plurality of electromagnets and permanent magnets, the electromagnet has a core wound with a control coil and has a main pole and a commutating pole with a commutating pole permanent magnet provided approximately parallel to each other at predetermined intervals in a protruding condition radially or axially to the rotor. In the magnetic bearing provided radially, two of the electromagnets are placed oppositely to each other across the rotor in an approximately horizontal position, and the rotor is arranged so as to have a predetermined gap with the main pole and the commutating pole, and the permanent magnet is provided between the adjacent electromagnets. In the magnetic bearing provided axially, two of the electromagnets are placed in parallel in an approximately horizontal position, and the rotor is arranged so as to have a predetermined gap with the main pole and the commutating pole, and the permanent magnet is provided between the adjacent electromagnets.</p> |
