Motor control device, image forming apparatus, and motor control method
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United States of America Patent
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Aug 16, 2016
Grant Date -
Oct 16, 2014
app pub date -
Apr 14, 2014
filing date -
Apr 16, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
A motor control device includes a measuring unit configured to output a measurement value corresponding to a rotation speed of a motor; and a control unit configured to control driving of the motor such that the measurement value makes closer to a target value. When the measurement value does not exceed a predetermined abnormality determination threshold, the control unit controls the driving of the motor based on a difference between the measurement value and the target value. The abnormality determination threshold is set in a positive direction or in a negative direction with reference to the target value. When the measurement value exceeds the abnormality determination threshold, the control unit controls the driving of the motor based on a difference between a corrected measurement value and the target value. The corrected measurement value is set in the same direction as the direction in which the abnormality determination threshold is set.
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