ACTIVE MAGNETIC BEARING WITH LORENTZ-TYPE AXIAL ACTUATOR

摘要

The invention as an electromagnetic bearing for supporting a rotating shaft installed inside the magnetic bearing body, an empty space in which the rotating shaft and the magnetic force generating member installation provided; The rotating shaft which is installed in the empty space of the bearing body; A are arranged at intervals attached to the inner face a plurality of first permanent magnets made of the same polarity of the stimulus portion of the rotary shaft with the bearing body the center axial direction of the bearing body; It is arranged attached to the other inner surface sikimyeo support the rest of the rotating shaft with the bearing body central axis direction of the first plurality of second permanent magnets having a different polarity with the permanent magnets of the bearing body; Core to the first and second permanent magnets are arranged attached in a longitudinal direction of the rotating shaft; And according to current applied thereto is wound on the core to generate a magnetic flux circulating in said rotating shaft and said core comprises a coil for controlling the axial movement of the rotary shaft. The electromagnetic bearings it is possible to axially and radially controlled by a single actuator.