Magnetic Slewing bearing according to its control, magnetic energy source, structure and other classifications. In addition, you can also press the magnetic field of the permanent magnet type by type, type electromagnet and permanent magnets - the electromagnet mixed. Bearing suspension force can also be divided into a suction type type type and repulsion. Superconducting magnetic bearing is also divided into low and high temperature superconducting superconducting two kinds.
All of the above categories between different types there are some special restrictions, should pay special attention.
① magnet bearing is only a passive type (passive), and not in the passive bearing is stable three directions, the direction of at least one active type should be used.
② DC excitation type bearings can only be active type (active).
③ pure electromagnetic type bearings only five degrees of freedom control type bearings, volume, mass and power consumption are large.
④ repulsive type magnetic bearing, because the flux utilization is low, suction-type structure is more complex, it seldom used
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