| 摘要 |
PROBLEM TO BE SOLVED: To provide a stepping motor origin setting device and a stepping motor origin setting method, which can set an origin of a stepping motor at a maximum torque generating point at a low cost and with high accuracy. SOLUTION: A prescribed rotational position of a stepping motor 12 is detected by a reference rotation position sensor 16 as a reference rotation position Q (temporary origin), and a stable point P, i.e., a prescribed waveform position of an exciting currentϕA, at which a maximum torque is obtained, is set in the neighborhood of the detected reference rotation position as the true origin. |
