| 摘要 |
PROBLEM TO BE SOLVED: To generate non-step drive signals by adding a count value counted by a clock pulse counter circuit, when a stepping motor is turned at low revolution and to avoid vibration and noise. SOLUTION: This stepping motor drive method is such that clock pulse counter circuits (30 and 31) for counting clock pulses (32a) are provided between respective table ROMs (3 and 4), and respective D/A converters (7 and 8) and counted values obtained by the respective counter circuits (30 and 31) are applied to the respective D/A converters (7 and 8), to make respective drive signals (5 and 6) non-step and to reduce vibration and noise in a low revolution step rotation state. |
