发明名称 |
Structure of stepping motor and method of driving the stepping motor |
摘要 |
The present invention provides a large-thrust stepping motor improved in thrust constant by provision of slots at equal intervals between adjacent N and S poles of a permanent magnet disposed on a movable member of the motor or by division of the winding for each phase of a stator of the motor into two or more sections to pass currents independently through the divisional sections in accordance with the speed of the motor. Further, the invention provides a large-thrust stepping motor using a field magnet having large magnetomotive force, the field magnet being formed by combination of a magnet substrate and permanent magnets independent from the magnet substrate.
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申请公布号 |
US4857786(A) |
申请公布日期 |
1989.08.15 |
申请号 |
US19880178213 |
申请日期 |
1988.04.06 |
申请人 |
HITACHI, LTD. |
发明人 |
NIHEI, HIDEKI;MIYASHITA, KUNIO;SAITOH, KOUICHI;YAMASHITA, SEIZI |
分类号 |
H02K1/17;H02K1/27;H02K37/14;H02K41/03 |
主分类号 |
H02K1/17 |
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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