Motor control device
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United States of America Patent
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Dec 2, 2014
Grant Date -
Feb 7, 2013
app pub date -
Aug 1, 2012
filing date -
Aug 1, 2012
priority date (Note) -
Withdrawn
status (Latency Note)
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Abstract
A motor control device has a motor driving circuit for driving a motor, a current detection circuit for detecting a motor current flowing through the motor driving circuit, and a controller for calculating a detected value of the motor current based on an output of the current detection circuit, comparing the detected value with a target value of the motor current, and generating a command value for allowing a motor current of the target value to flow through the motor based on a deviation therebetween, to output the command value to a motor driving circuit. The current detection circuit is configured of a first current detection circuit having a positive first gain and a second current detection circuit having a negative second gain obtained by inverting the first gain.
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