| 摘要 |
PURPOSE:To reduce an output torque ripple by controlling to energize an exciting coil by position detection signals alternately obtained by detecting the position of a rotor. CONSTITUTION:A Hall element 11b produces its outputs when opposing to poles 28a, 28b. The element 11b produces a positive output when opposing to an S-pole and a negative output when opposing to an N-pole. When opposing to the S-pole, a transistor 10a is conducted to supply a current to an exciting coil B, thereby exciting the poles 30a, 30b in S- and N-poles, respectively. When opposing to the N-pole, the transistor 10a is interrupted, and a transistor 10b is conducted to supply a current to an exciting coil A, thereby inverting the polarity of the poles 30a, 30b. Accordingly, a motor rotates as one phase. |
