发明名称 |
Stepping motor control method including varying the number of split sections in one step drive period of a stepping motor |
摘要 |
A device for controlling the power supplied to windings of a stepping motor includes a pulse generator for splitting one step drive period of the motor into a plurality of sections, the number of sections and increasing or decreasing depending upon the drive frequency. The pulse generator, also sets the duty cycle of a pulse applied to the motor. The device also includes a stepping motor drive circuit for exciting each phase of the motor with a current determined by the duty cycle of pulse, and a duty changing device for changing the duty cycle for each of plural sections in one excitation phase of the stepping motor, wherein a current wave input into the motor can be maintained as a sinusoidal wave from low-speed rotation to high-speed rotation of the motor by changing the number of sections in excitation depending upon serial drive operations, thereby achieving motor control with less rotation inconsistencies and less noise.
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申请公布号 |
US5572105(A) |
申请公布日期 |
1996.11.05 |
申请号 |
US19940363012 |
申请日期 |
1994.12.23 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
NOJIMA, TAKASHI;MIYAKAWA, AKIRA;HIRAMATSU, SOICHI;YAMAGUCHI, HIDEKI;INOUE, HIROYUKI;KAWAZOE, KENJI;ISHIKAWA, TETSUYA;NAKAMURA, HITOSHI;KIDA, AKIRA;KAWAKAMI, HIDEAKI |
分类号 |
H02P8/18;H02P8/22;H02P8/32;(IPC1-7):G05B19/40 |
主分类号 |
H02P8/18 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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