| 摘要 |
PURPOSE:To miniaturize and simplify it while securing the precision of control by putting it in such magnetic pole arrangement structure that the rotating field and the magnetic field for the radial float do not interfere with each other. CONSTITUTION:The magnetic pole 3 for a motor has projections 3a on all sides, and the tops are arranged opposite at a small distance to the inside periphery of a rotor 2. Moreover, magnetic pole 5 for radial bearings are U-shaped ones each of which has a pair of salient poles, and are arranged at four places at regular angles along the slant provided at the periphery 2b of a rotor, and the top of each salient pole 5a is arranged opposite at a small distance to the slant 2c of the rotor. Both the rotating field H1 by a motor 4 and the magnetic field H2 by a radial magnetic bearing 6 pass inside the rotor, but do not overlap each other, so the problems of interference and magnetic saturation can be avoided. |
