发明名称 |
Image forming apparatus having stepping motor arranged in conveying path for paper, and method for controlling stepping motor in image forming apparatus |
摘要 |
An image forming apparatus includes: a stepping motor arranged in a conveying path for a paper; a driver for driving the stepping motor; a current detecting unit for detecting an actual current value; and a control unit for providing a set current value for every predetermined cycle. The control unit determines an estimated load torque value corresponding to the set current value in a previous cycle and the actual current value in a present cycle, by referring to a relationship between actual current and load torque of the stepping motor with respect to the set current value, determines a target load torque value based on the estimated load torque value, and determines, as the set current value, a current value corresponding to the target load torque value, by referring to a relationship between maximum output torque of the stepping motor and current supplied to the stepping motor. |
申请公布号 |
US8629643(B2) |
申请公布日期 |
2014.01.14 |
申请号 |
US201113044315 |
申请日期 |
2011.03.09 |
申请人 |
TACHIBANA YUTA;TAMURA TOMONOBU;WATANABE HIROYUKI;NAKANO NORIHIKO;KONICA MINOLTA BUSINESS TECHNOLOGIES, INC. |
发明人 |
TACHIBANA YUTA;TAMURA TOMONOBU;WATANABE HIROYUKI;NAKANO NORIHIKO |
分类号 |
H02P8/00;H02P8/14 |
主分类号 |
H02P8/00 |
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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