| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a magnet unit reducing deviations of attraction forces of permanent magnets due to the direction difference and enhancing controllability to each magnetic pole to reduce the capacity of a power source, and also to provide a stable elevator guiding device of high efficiency using the magnet unit. <P>SOLUTION: A magnet between a first and a third electrodes 7a, 7c and a magnet between a second and the third electrodes 7b, 7c are constituted by connecting two electromagnets 71a, 73a and 71b, 73b between the permanent magnets 72a, 72b. The length difference of magnetic paths from the respective permanent magnets 72a, 72b to their respective magnetic poles is reduced, and the fluxes (or flux density) of respective x-y directions are individually adjusted by controlling exciting currents to the respective electromagnets 71a, 73a, 71b, 73b. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
