| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To exactly detect a rotating state even when the generation timing of an induced signal is changed by a relative change of drive energy relative to a load. <P>SOLUTION: A plurality of types of detection sections are provided as detection sections for detecting a rotational status of a stepping motor 105. A control circuit 103 selects any of the detection sections according to the degree of remaining drive capacity of a main drive pulse P1, determines a rotational status of the stepping motor 105 by using a detection pattern of an induced signal VRs in the selected detection section, and drivingly controls the stepping motor 105 by any of the plurality of main drive pulses P1 different in energy or a correction drive pulse P2 with a larger energy than the each main drive pulse P1, based on the determination result. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
