| 摘要 |
PURPOSE:To diminish torque ripple, by contriving coil sections shorter roughly in the radial direction of the printed coils as the sheet coil is set closer to a magnet. CONSTITUTION:On a square yoke 1, a coil device 2 organized with three circular laminated sheet coils 2a-2c of the same diameter is fitted. In the meantime, a circular magnet 3 is set to confront the coil device 2 at a given interval. The coil sections roughly in the radial direction of printed coils 2A, 2B connected to the sheet coils 2a-2c together are set shorter in the order of the sheet coils 2c, 2b, and 2a. As the result, torque ripple can be diminished. |
