| 摘要 |
PURPOSE:To reduce a torque ripple by laminating a plurality of first sheet coils, patterns thereof are mutually equal, laminating a second sheet coil on a car and making the quantities of interlinkage of the first and second sheet coils to the magnetic flux of a magnetic circuit uniform at every phase. CONSTITUTION:A magnetic circuit is constituted of a magnet 15 and a yoke 14. Three first sheet coils 16-18 are laminated to compose a coil body 21, and a second sheet coil 22 fixing the coil body 21 by bonding, etc. is fastened to a base 11 so that the second sheet coil 22 is faced oppositely to the magnet 15. The first sheet coils 16-18 have mutually equal patterns. The quantities of interlinkage of coil sections for the first sheet coils 16-18 and the second sheet coil 22 to the magnetic flux of the magnetic circuit are made uniform at every phase. |
