发明名称 |
ELECTRIC MOTOR CONTROL APPARATUS |
摘要 |
In an electric motor control apparatus, an electric motor driving unit includes: a current detection unit configured to detect a current flowing through a current detection place in the electric motor driving unit. A control unit includes a current calculation unit configured to calculate a current value of a current flowing through an electric motor from an offset correction value obtained based on a first detection value detected at a time when a current flows through the current detection place and a second detection value detected at a time when a current does not flow through the current detection place. The offset correction value includes: a first offset correction value stored in nonvolatile memory of the control unit at a time of assembling the electric motor control apparatus; and a second offset correction value computed by the control unit while the electric motor is driven. |
申请公布号 |
US2011074329(A1) |
申请公布日期 |
2011.03.31 |
申请号 |
US20100749945 |
申请日期 |
2010.03.30 |
申请人 |
MITSUBISHI ELECTRIC CORPORATION |
发明人 |
MATSUSHITA MASAKI;KIFUKU TAKAYUKI;HORI YASUAKI |
分类号 |
H02P23/14 |
主分类号 |
H02P23/14 |
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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