发明名称 |
Stepping motor driving apparatus having small time constant regenerative current path |
摘要 |
In an apparatus for driving a stepping motor in a micro step manner by a PWM control signal generated based on a sense voltage, including a sense resistor for generating the sense voltage, a driving current path including the sense resistor and the stepping motor is provided and is operated so that a driving current flows through the stepping motor, when the PWM control signal is activated. A regenerative current path including the sense resistor and is provided the stepping motor and is operated so that a regenerative current flows through the stepping motor, when the PWM control signal is not activated. A resistance of the regenerative current path is larger than a resistance of the driving current path.
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申请公布号 |
US6114826(A) |
申请公布日期 |
2000.09.05 |
申请号 |
US19980066941 |
申请日期 |
1998.04.28 |
申请人 |
NEC CORPORATION |
发明人 |
NISHIURA, HARUO;NIWA, FUMIYUKI |
分类号 |
H02P8/18;H02P8/10;H02P8/22;(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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